US20160011696A1 - Touch panel and handheld electronic device - Google Patents
Touch panel and handheld electronic device Download PDFInfo
- Publication number
- US20160011696A1 US20160011696A1 US14/855,387 US201514855387A US2016011696A1 US 20160011696 A1 US20160011696 A1 US 20160011696A1 US 201514855387 A US201514855387 A US 201514855387A US 2016011696 A1 US2016011696 A1 US 2016011696A1
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- Prior art keywords
- touch panel
- connection lines
- sensing layer
- transparent
- flexible substrate
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
- G06F1/1643—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being associated to a digitizer, e.g. laptops that can be used as penpads
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
Definitions
- the application generally relates to an input device, and more particularly, to a touch panel and a handheld electronic device using the same.
- Touch panels can be categorized into resistive touch panels, capacitive touch panels, optical touch panels, acoustic wave touch panels, and electromagnetic touch panels according to the adopted sensing techniques.
- resistive and capacitive touch panels are the most popular ones.
- capacitive touch panel one or more layers of conductive films with transparent electrode patterns are adhered to a substrate to form a touch sensor. A user can operate on the capacitive touch panel by simply touching the surface thereof.
- capacitive touch panels offer such advantages as short response time, high reliability, and high durability.
- FIG. 1 is a side view of a conventional touch panel.
- an adhesive layer 120 for example, an optical clear adhesive (OCA)
- OCA optical clear adhesive
- a conductive layer 130 for example, an anisotropic conductive film (ACF)
- FPC flexible printed circuit
- a transparent cover 150 is attached onto the sensor 110 through the adhesive layer 120 to form the touch panel 100 .
- the FPC 140 needs to be attached to the edge of the sensor 110 .
- the touch panel 100 is manufactured through a complicated process with high cost, and the problem of uneven adhesion may be produced therein.
- the application is directed to a touch panel with reduced manufacturing cost, simplified manufacturing process, and evenly adhered areas.
- the application is directed to a handheld electronic device using aforementioned touch panel as its input device.
- the application provides a touch panel including a first transparent flexible substrate, a plurality of first connection lines, a plurality of second connection lines, a first sensing layer, and a second sensing layer.
- the first transparent flexible substrate has a first side and a second side opposite to the first side, and the first transparent flexible substrate includes a first carrying portion and a first leading portion connected to an edge of the first carrying portion.
- the first connection lines are disposed at the first side and are extended from the first carrying portion to the first leading portion.
- the second connection lines are disposed at the second side and are extended from the first carrying portion to the first leading portion.
- the first sensing layer includes a plurality of first transparent electrode patterns and is disposed at the first carrying portion and located at the first side, and the first transparent electrode patterns are respectively connected with the first connection lines.
- the second sensing layer includes a plurality of second transparent electrode patterns and is disposed at the first carrying portion and located at the second side, and the second transparent electrode patterns are respectively connected with the second connection lines.
- the application also provides a handheld electronic device including a body, a main processor system, a display panel, and the touch panel described above.
- the body has a display opening.
- the main processor system is disposed in the body.
- the display panel is disposed at the display opening and is electrically connected to the main processor system.
- the touch panel is disposed on the display panel.
- connection lines extended from a first carrying portion to a first leading portion are respectively disposed at both sides of a first transparent flexible substrate, and sensing layers with transparent electrode patterns are respectively disposed, so as to respectively connect the transparent electrode patterns with the corresponding connection lines.
- the touch panel offers reduced manufacturing cost, simplified manufacturing process, reduced lateral size, and evenly adhered areas.
- the application also provides a handheld electronic device. The handheld electronic device uses the touch panel as its input device therefore offers a convenient operation experience.
- FIG. 1 is a side view of a conventional touch panel.
- FIG. 2 is an explosion diagram of a touch panel according to an embodiment of the application.
- FIG. 3A is a side view of the touch panel in FIG. 2 .
- FIG. 3B is a side view of a touch panel according to another embodiment of the application.
- FIG. 4 is an explosion diagram of a touch panel according to another embodiment of the application.
- FIG. 5 is a side view of the touch panel in FIG. 4 .
- FIG. 6A is a top-view flowchart of fabricating the touch panel in FIG. 1 .
- FIG. 6B is a top-view flowchart of fabricating the touch panel in FIG. 2 .
- FIG. 6C is a top-view flowchart of fabricating the touch panel in FIG. 4 .
- FIG. 7 is an explosion diagram of a handheld electronic device according to an embodiment of the application.
- FIG. 8 is an explosion diagram of a handheld electronic device according to another embodiment of the application.
- FIG. 9 is an enlarged view of the main processor system of the handheld electronic device in FIG. 8 .
- FIG. 2 is an explosion diagram of a touch panel according to an embodiment of the application.
- the touch panel 200 includes a first transparent flexible substrate 210 , a plurality of first connection lines 220 , a plurality of second connection lines 230 , a first sensing layer 240 , and a second sensing layer 250 .
- the first transparent flexible substrate 210 has a first side P 1 and a second side P 2 opposite to the first side P 1 .
- the first transparent flexible substrate 210 includes a first carrying portion 212 and a first leading portion 214 connected to an edge of the first carrying portion 212 .
- the material of the first transparent flexible substrate 210 includes polymer.
- the material of the first transparent flexible substrate 210 is polyethylene terephthalate (PET).
- PET polyethylene terephthalate
- the application is not limited thereto, and in other embodiments of the application, the material of the first transparent flexible substrate 210 may be any other material of the same characteristic.
- the first connection lines 220 are disposed at the first side P 1 and extended from the first carrying portion 212 to the first leading portion 214
- the second connection lines 230 are disposed at the second side P 2 and extended from the first carrying portion 212 to the first leading portion 214
- the first sensing layer 240 includes a plurality of first transparent electrode patterns 242 .
- the first sensing layer 240 is disposed at the first side P 1 of the first carrying portion 212 so that the first transparent electrode patterns 242 are respectively connected to the first connection lines 220 .
- the second sensing layer 250 includes a plurality of second transparent electrode patterns 252 .
- the second sensing layer 250 is disposed at the second side P 2 of the first carrying portion 212 so that the second transparent electrode patterns 252 are respectively connected to the second connection lines 230 .
- the first sensing layer 240 is attached to the first side P 1 of the first transparent flexible substrate 210 , and the first connection lines 220 are located between the first sensing layer 240 and the first transparent flexible substrate 210 .
- the second sensing layer 250 is attached to the second side P 2 of the first transparent flexible substrate 210 , and the second connection lines 230 are located between the second sensing layer 250 and the first transparent flexible substrate 210 .
- the touch panel 200 further includes a transparent cover 260 and an adhesive layer 270 .
- the adhesive layer 270 is disposed on the first sensing layer 240 so that the transparent cover 260 is adhered to the first sensing layer 240 through the adhesive layer 270 .
- the first connection lines 220 are disposed along the edge of the first carrying portion 212 at the first side P 1 and extended to the first leading portion 214 .
- the first sensing layer 240 is adhered to the first side P 1 of the first carrying portion 212 so that the first connection lines 220 are respectively connected with the corresponding first transparent electrode patterns 242 .
- the first connection lines 220 can be considered as being disposed on the first side P 1 of the first carrying portion 212 and corresponding to the first transparent electrode patterns 242 .
- the first transparent electrode patterns 242 can be precisely connected with the corresponding first connection lines 220 .
- the second connection lines 230 are disposed along the edge of the first carrying portion 212 at the second side P 2 and extended to the first leading portion 214 .
- the second sensing layer 250 is adhered to the second side P 2 of the first carrying portion 212 so that the second connection lines 230 are respectively connected with the corresponding second transparent electrode patterns 252 .
- the second connection lines 230 can be considered as being disposed on the second side P 2 of the first carrying portion 212 and corresponding to the second transparent electrode patterns 252 .
- the second transparent electrode patterns 252 can be precisely connected with the corresponding second connection lines 230 .
- the first transparent electrode patterns 242 and the second transparent electrode patterns 252 are respectively striped patterns, and the extended direction of the first transparent electrode patterns 242 is substantially perpendicular to that of the second transparent electrode patterns 252 , as shown in FIG. 2 . Accordingly, after the first sensing layer 240 and the second sensing layer 250 are respectively adhered to the first side P 1 and the second side P 2 of the first carrying portion 212 , the stripe-shaped first transparent electrode patterns 242 and second transparent electrode patterns 252 form a cross over net structure such that the touch panel 200 can work through touch sensing.
- the material of the first connection lines 220 and the second connection lines 230 includes a metal or a transparent conductive material.
- the first connection lines 220 and the second connection lines 230 are indium tin oxide (ITO) lines.
- ITO indium tin oxide
- the first connection lines 220 and the second connection lines 230 may also be made of copper or any other metal or any other transparent conductive material.
- the material of the first transparent electrode patterns 242 and the second transparent electrode patterns 252 includes a transparent conductive material.
- the material of the first transparent electrode patterns 242 and the second transparent electrode patterns 252 is ITO.
- the application is not limited thereto, and in other embodiments of the application, the material of the first transparent electrode patterns 242 and the second transparent electrode patterns 252 may also be any other transparent conductive material, such as indium zinc oxide (IZO), aluminum zinc oxide (AZO), gallium zinc oxide (GZO), In2O3, ZnO, TiO2, or SnO2.
- FIG. 3A is a side view of the touch panel in FIG. 2 .
- the first carrying portion 212 , the first sensing layer 240 , and the second sensing layer 250 have substantially the same shape and size.
- the first connection lines 220 between the first sensing layer 240 and the first transparent flexible substrate 210 and the second connection lines 230 between the second sensing layer 250 and the first transparent flexible substrate 210 can be led out of the first sensing layer 240 and the second sensing layer 250 through the first leading portion 214 .
- the first connection lines 220 and the second connection lines 230 extended from the first carrying portion 212 to the first leading portion 214 of the first transparent flexible substrate 210 can be electrically connected to an external device through a plurality of first contacts 214 a and a plurality of second contacts 214 b on the first leading portion 214 and the first leading portion 214 .
- the first leading portion 214 has a plurality of first contacts 214 a and a plurality of second contacts 214 b .
- the first contacts 214 a and the second contacts 214 b are respectively disposed on two sides of the first leading portion 214 and are respectively connected with the first connection lines 220 between the first sensing layer 240 and the first transparent flexible substrate 210 and the second connection lines 230 between the second sensing layer 250 and the first transparent flexible substrate 210 , as shown in FIG. 3A .
- FIG. 3B is a side view of a touch panel according to another embodiment of the application.
- the first contacts 214 a and the second contacts 214 b on the first leading portion 214 are disposed on the same side of the first leading portion 214 .
- the first leading portion 214 has conductive holes 214 c
- the second connection lines 230 at the second side P 2 of the first leading portion 214 are extended to the first side P 1 through the conductive holes 214 c , as shown in FIG. 3B .
- first contacts 214 a and the second contacts 214 b disposed at the first side P 1 of the first leading portion 214 can be respectively connected with the first connection lines 220 between the first sensing layer 240 and the first transparent flexible substrate 210 and the second connection lines 230 between the second sensing layer 250 and the first transparent flexible substrate 210 .
- the first connection lines 220 and the second connection lines 230 can always be electrically connected to an external device through the first leading portion 214 , the first contacts 214 a , and the second contacts 214 b .
- the external device provides a signal to the touch panel 200
- the signal can be transmitted to the corresponding first transparent electrode pattern 242 and second transparent electrode pattern 252 through the first connection lines 220 and the second connection lines 230 , so as to allow the touch panel 200 to achieve the touch sensing function.
- FIG. 4 is an explosion diagram of a touch panel according to another embodiment of the application.
- the major difference between the touch panel 200 ′ in the present embodiment and the touch panel 200 in foregoing embodiment is that besides the touch panel 200 , the touch panel 200 ′ further includes a second transparent flexible substrate 280 , and the first transparent flexible substrate 210 is attached to the second transparent flexible substrate 280 .
- the material of the second transparent flexible substrate 280 includes polymer.
- the material of the second transparent flexible substrate 280 may be the same as or different from the material of the first transparent flexible substrate 210 .
- the application is not limited herein.
- the first sensing layer 240 of the touch panel 200 ′ is attached to the first side P 1 of the first transparent flexible substrate 210 so that the first connection lines 220 are located between the first sensing layer 240 and the first transparent flexible substrate 210 .
- the second sensing layer 250 of the touch panel 200 ′ is attached to one side of the second transparent flexible substrate 280 so that the second connection lines 230 are located between the second sensing layer 250 and the second transparent flexible substrate 280 .
- the second transparent flexible substrate 280 includes a second carrying portion 282 and a second leading portion 284 connected to an edge of the second carrying portion 282 . Accordingly, the second connection lines 230 are located between the second sensing layer 250 and the second transparent flexible substrate 280 , disposed along the edge of the second carrying portion 282 , and extended to the second leading portion 284 .
- first connection lines 220 and the second connection lines 230 of the touch panel 200 ′ are respectively disposed on the first transparent flexible substrate 210 and the second transparent flexible substrate 280 , and the first sensing layer 240 and the second sensing layer 250 are respectively adhered to the first transparent flexible substrate 210 and the second transparent flexible substrate 280 .
- the first transparent flexible substrate 210 is attached to the second transparent flexible substrate 280 to allow the touch panel 200 ′ to achieve the touch sensing function.
- FIG. 5 is a side view of the touch panel in FIG. 4 .
- the first carrying portion 212 and the second carrying portion 282 have substantially the same size and shape, and the first carrying portion 212 , the first sensing layer 240 , and the second sensing layer 250 described above have substantially the same size and shape.
- the first connection lines 220 between the first sensing layer 240 and the first transparent flexible substrate 210 and the second connection lines 230 between the second sensing layer 250 and the second transparent flexible substrate 280 can be led out of the first sensing layer 240 and the second sensing layer 250 through the first leading portion 214 and the second leading portion 284 .
- the touch panel 200 ′ further includes a plurality of first contacts 290 a and a plurality of second contacts 290 b .
- the first contacts 290 a are disposed on the upper surface of the first leading portion 214 and are respectively connected with the first connection lines 220 .
- the second contacts 290 b are disposed on the exposed endmost part of the upper surface of the second leading portion 284 and are respectively connected with the second connection lines 230 .
- the difference between the connection line structures of the touch panel 200 ′ and the touch panel 200 is that in the touch panel 200 , the first connection lines 220 and the second connection lines 230 are respectively disposed at both sides of the first transparent flexible substrate 210 , while in the touch panel 200 ′, the first connection lines 220 and the second connection lines 230 are respectively disposed on the first transparent flexible substrate 210 and the second transparent flexible substrate 280 , and two transparent flexible substrates are then adhered. Namely, in the touch panel 200 ′, the first connection lines 220 and the second connection lines 230 are distributed on the two transparent flexible substrates. Accordingly, the circuit layout area on a single transparent flexible substrate can be reduced.
- FIG. 6A is a top-view flowchart of fabricating the touch panel in FIG. 1 .
- the touch panel 100 in the touch panel 100 , one or more layers of conductive films are first disposed to form the sensor 110 , so as to form the touch sensing units.
- the adhesive layer 120 is then coated on the sensor 110 , and the adhesive conductive layer 130 is disposed at the edge of the sensor 110 to attach one side of the FPC 140 to the sensor 110 .
- the transparent cover 150 is attached to the sensor 110 through the adhesive layer 120 to complete the touch panel 100 .
- FIG. 6B is a top-view flowchart of fabricating the touch panel in FIG. 2 .
- the first sensing layer 240 and the second sensing layer 250 are respectively adhered to both sides of the first transparent flexible substrate 210 having the first connection lines 220 and the second connection lines 230 , so as to form touch sensing units (only the topmost first sensing layer 240 is illustrated in FIG. 6B ), and the adhesive layer 270 is coated on the first sensing layer 240 .
- the transparent cover 260 is attached to the first sensing layer 240 through the adhesive layer 270 , so as to complete the touch panel 200 .
- FIG. 6C is a top-view flowchart of fabricating the touch panel in FIG. 4 .
- the first sensing layer 240 is adhered to the first transparent flexible substrate 210 having the first connection lines 220
- the second sensing layer 250 is adhered to the second transparent flexible substrate 280 having the second connection lines 230 .
- the first transparent flexible substrate 210 is attached to the second transparent flexible substrate 280 to form touch sensing units (only the topmost first sensing layer 240 is illustrated in FIG. 6C ).
- the adhesive layer 270 is coated on the first sensing layer 240 .
- the transparent cover 260 is attached to the first sensing layer 240 through the adhesive layer 270 , so as to complete the touch panel 200 ′.
- the FPC 140 is attached to the touch sensing units, while in the touch panel 200 and the touch panel 200 ′, the touch sensing units are formed by directly disposing the connection lines and attaching the sensing layers onto the flexible substrates.
- the material cost and process for adhering the FPC 140 are saved in the touch panel 200 and the touch panel 200 ′, and the lateral sizes of the touch panel 200 and the touch panel 200 ′ without the FPC 140 are smaller than that of the touch panel 100 with the FPC 140 .
- the FPC 140 of a certain thickness is attached to the edge of the sensor 110 .
- the touch panel 200 and the touch panel 200 ′ While in the touch panel 200 and the touch panel 200 ′, the first carrying portion 212 , the first sensing layer 240 , the second sensing layer 250 , and even the second carrying portion 282 have substantially the same shape and size. Thus, the touch panel 200 and the touch panel 200 ′ can have evenly adhered areas.
- FIG. 7 is an explosion diagram of a handheld electronic device according to an embodiment of the application.
- the handheld electronic device 300 includes a body 310 , a main processor system 320 , a display panel 330 , and the touch panel 200 described above.
- the body 310 has a display opening 312 .
- the main processor system 320 is disposed in the body 310 .
- the display panel 330 is disposed at the display opening 312 and electrically connected to the main processor system 320 .
- the touch panel 200 is disposed on the display panel 330 .
- FIG. 7 does not show all the components but only the outermost transparent cover 260 of the touch panel 200 .
- the touch panel 200 when the touch panel 200 is disposed on the display panel 330 and assembled to the display opening 312 , the display opening 312 is covered by the outermost transparent cover 260 of the touch panel 200 , and a user can operate the handheld electronic device 300 by touching the transparent cover 260 .
- the first leading portion 214 protruded from the touch panel 200 is disposed in the body 310 through the display opening 312 , so that the first connection lines 220 and the second connection lines 230 (as shown in FIG. 2 ) can be electrically connected to the main processor system 320 through the first leading portion 214 . Accordingly, the main processor system 320 of the handheld electronic device 300 can supply power, and the power can be transmitted to the touch panel 200 through the first connection lines 220 and the second connection lines 230 , so that the touch panel 200 can achieve the touch sensing function.
- the command signal is transmitted to the main processor system 320 through the first connection lines 220 and the second connection lines 230 . Accordingly, the user can operate the handheld electronic device 300 by touching the touch panel 200 . After that, information output by the handheld electronic device 300 is displayed on the display panel 330 .
- the adhesive layers of the touch panel 200 are made of transparent materials, so that the user can view the information and continues to input commands according to requirements through the transparent touch panel 200 .
- FIG. 8 is an explosion diagram of a handheld electronic device according to another embodiment of the application.
- the handheld electronic device 300 ′ includes a body 310 , a main processor system 320 , a display panel 330 , and the touch panel 200 ′ described above.
- the major difference between the handheld electronic device 300 ′ and the handheld electronic device 300 is that the handheld electronic device 300 ′ has the touch panel 200 instead of the touch panel 200 ′.
- FIG. 8 does not show all the components of the touch panel 200 ′ but only the outermost transparent cover 260 thereof.
- the touch panel 200 ′ when the touch panel 200 ′ is disposed on the display panel 330 and assembled to the display opening 312 , the display opening 312 is covered by the outermost transparent cover 260 of the touch panel 200 ′, and a user can operate the handheld electronic device 300 ′ by touching the transparent cover 260 .
- first leading portion 214 and the second leading portion 284 protruded from the touch panel 200 ′ is disposed in the body 310 through the display opening 312 , so that the first connection lines 220 and the second connection lines 230 can be electrically connected to the main processor system 320 through the first leading portion 214 and the second leading portion 284 .
- FIG. 9 is an enlarged view of the main processor system of the handheld electronic device in FIG. 8 .
- the first leading portion 214 and the second leading portion 284 can be bent to a back side of the display panel 330 relative to the touch panel 200 ′ along the edge of the display panel 330 .
- the main processor system 320 includes a circuit board 322 .
- the circuit board 322 has a stepped junction jointed with the stepped structure of the touch panel 200 ′ such that the first contacts 290 a and the second contacts 290 b are electrically connected to the main processor system 320 .
- the main processor system 320 of the handheld electronic device 300 ′ can supply power, and the power can be transmitted to the touch panel 200 ′ through the first contacts 290 a , the second contacts 290 b , the first connection lines 220 , and the second connection lines 230 , so that the touch panel 200 ′ can achieve the touch sensing function.
- the command signal is transmitted to the main processor system 320 through the first connection lines 220 and the second connection lines 230 . Accordingly, the user can operate the handheld electronic device 300 ′ by touching the touch panel 200 ′. After that, information output by the handheld electronic device 300 ′ is displayed on the display panel 330 .
- the adhesive layers of the touch panel 200 ′ are made of transparent materials, so that the user can view the information and continues to input commands according to requirements through the transparent touch panel 200 ′.
- the application provides a touch panel and a handheld electronic device using the same.
- a plurality of first connection lines and a plurality of second connection lines are respectively disposed on carrying portions of transparent flexible substrates and extended out of the substrates, and signals are transmitted to transparent electrode patterns of sensing layers through the connection lines, so that the FPC in the conventional technique is replaced and a touch sensing function is achieved by the touch panel.
- part of the adhering process and the cost of the adhesive material are saved, the lateral size of the touch panel is reduced, and evenly adhered areas are achieved in the touch panel provided by the application.
- a user can touch the touch panel to input commands and the operation of the handheld electronic device can be made very convenient.
Abstract
A touch panel including a first transparent flexible substrate, a plurality of first connection lines, a plurality of second connection lines, a first sensing layer, and a second sensing layer is provided. The first transparent flexible substrate has a first side and a second side and includes a first carrying portion and a first leading portion. The first connection lines and the second connection lines are respectively disposed at the first side and the second side and are extended from the first carrying portion to the first leading portion. The first sensing layer and the second sensing layer have plural transparent electrode patterns and are respectively disposed at the first side and the second side of the first carrying portion. The transparent electrode patterns are respectively connected with the first connection lines and the second connection lines. A handheld electronic device with a touch input function is also provided.
Description
- This application is a continuation application of and claims the priority benefit of prior application Ser. No. 13/445,919, filed on Apr. 13, 2012, now allowed. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of specification.
- 1. Field of the Application
- The application generally relates to an input device, and more particularly, to a touch panel and a handheld electronic device using the same.
- 2. Description of Related Art
- In recent years, the digital information and wireless mobile communication technologies have been developing quickly. Many digital electronic products, such as mobile phones and personal digital assistants (PDAs), have abandoned the conventional keyboards and mouses and adopt touch panels as their input devices, so as to achieve high portability, small volume, and operation humanization.
- Touch panels can be categorized into resistive touch panels, capacitive touch panels, optical touch panels, acoustic wave touch panels, and electromagnetic touch panels according to the adopted sensing techniques. Among aforementioned touch panels, resistive and capacitive touch panels are the most popular ones. In a capacitive touch panel, one or more layers of conductive films with transparent electrode patterns are adhered to a substrate to form a touch sensor. A user can operate on the capacitive touch panel by simply touching the surface thereof. Thereby, capacitive touch panels offer such advantages as short response time, high reliability, and high durability.
-
FIG. 1 is a side view of a conventional touch panel. Referring toFIG. 1 , an adhesive layer 120 (for example, an optical clear adhesive (OCA)) is coated on asensor 110 formed by one or more layers of conductive films with transparent electrode patterns. A conductive layer 130 (for example, an anisotropic conductive film (ACF)) is coated over the edge of thesensor 110 to attach one side of a flexible printed circuit (FPC) 140 to the edge of thesensor 110, so as to electrically connect conductive lines on theFPC 140 to the transparent electrode patterns on thesensor 110. Eventually, atransparent cover 150 is attached onto thesensor 110 through theadhesive layer 120 to form thetouch panel 100. However, as shown inFIG. 1 , in thetouch panel 100, the FPC 140 needs to be attached to the edge of thesensor 110. Thus, thetouch panel 100 is manufactured through a complicated process with high cost, and the problem of uneven adhesion may be produced therein. - Accordingly, the application is directed to a touch panel with reduced manufacturing cost, simplified manufacturing process, and evenly adhered areas.
- The application is directed to a handheld electronic device using aforementioned touch panel as its input device.
- The application provides a touch panel including a first transparent flexible substrate, a plurality of first connection lines, a plurality of second connection lines, a first sensing layer, and a second sensing layer. The first transparent flexible substrate has a first side and a second side opposite to the first side, and the first transparent flexible substrate includes a first carrying portion and a first leading portion connected to an edge of the first carrying portion. The first connection lines are disposed at the first side and are extended from the first carrying portion to the first leading portion. The second connection lines are disposed at the second side and are extended from the first carrying portion to the first leading portion. The first sensing layer includes a plurality of first transparent electrode patterns and is disposed at the first carrying portion and located at the first side, and the first transparent electrode patterns are respectively connected with the first connection lines. The second sensing layer includes a plurality of second transparent electrode patterns and is disposed at the first carrying portion and located at the second side, and the second transparent electrode patterns are respectively connected with the second connection lines.
- The application also provides a handheld electronic device including a body, a main processor system, a display panel, and the touch panel described above. The body has a display opening. The main processor system is disposed in the body. The display panel is disposed at the display opening and is electrically connected to the main processor system. The touch panel is disposed on the display panel.
- As described above, in a touch panel provided by the application, connection lines extended from a first carrying portion to a first leading portion are respectively disposed at both sides of a first transparent flexible substrate, and sensing layers with transparent electrode patterns are respectively disposed, so as to respectively connect the transparent electrode patterns with the corresponding connection lines. Thereby, the touch panel offers reduced manufacturing cost, simplified manufacturing process, reduced lateral size, and evenly adhered areas. Moreover, the application also provides a handheld electronic device. The handheld electronic device uses the touch panel as its input device therefore offers a convenient operation experience.
- These and other exemplary embodiments, features, aspects, and advantages of the application will be described and become more apparent from the detailed description of exemplary embodiments when read in conjunction with accompanying drawings.
- The accompanying drawings are included to provide a further understanding of the application, and are incorporated in and constitute a part of this specification.
- The drawings illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.
-
FIG. 1 is a side view of a conventional touch panel. -
FIG. 2 is an explosion diagram of a touch panel according to an embodiment of the application. -
FIG. 3A is a side view of the touch panel inFIG. 2 . -
FIG. 3B is a side view of a touch panel according to another embodiment of the application. -
FIG. 4 is an explosion diagram of a touch panel according to another embodiment of the application. -
FIG. 5 is a side view of the touch panel inFIG. 4 . -
FIG. 6A is a top-view flowchart of fabricating the touch panel inFIG. 1 . -
FIG. 6B is a top-view flowchart of fabricating the touch panel inFIG. 2 . -
FIG. 6C is a top-view flowchart of fabricating the touch panel inFIG. 4 . -
FIG. 7 is an explosion diagram of a handheld electronic device according to an embodiment of the application. -
FIG. 8 is an explosion diagram of a handheld electronic device according to another embodiment of the application. -
FIG. 9 is an enlarged view of the main processor system of the handheld electronic device inFIG. 8 . - Reference will now be made in detail to the present preferred embodiments of the application, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the description to refer to the same or like parts.
-
FIG. 2 is an explosion diagram of a touch panel according to an embodiment of the application. Referring toFIG. 2 , in the present embodiment, thetouch panel 200 includes a first transparentflexible substrate 210, a plurality offirst connection lines 220, a plurality ofsecond connection lines 230, afirst sensing layer 240, and asecond sensing layer 250. The first transparentflexible substrate 210 has a first side P1 and a second side P2 opposite to the first side P1. Besides, the first transparentflexible substrate 210 includes a first carryingportion 212 and a first leadingportion 214 connected to an edge of the first carryingportion 212. The material of the first transparentflexible substrate 210 includes polymer. In the present embodiment, the material of the first transparentflexible substrate 210 is polyethylene terephthalate (PET). However, the application is not limited thereto, and in other embodiments of the application, the material of the first transparentflexible substrate 210 may be any other material of the same characteristic. - The
first connection lines 220 are disposed at the first side P1 and extended from the first carryingportion 212 to the first leadingportion 214, and thesecond connection lines 230 are disposed at the second side P2 and extended from the first carryingportion 212 to the first leadingportion 214. Thefirst sensing layer 240 includes a plurality of firsttransparent electrode patterns 242. Thefirst sensing layer 240 is disposed at the first side P1 of the first carryingportion 212 so that the firsttransparent electrode patterns 242 are respectively connected to the first connection lines 220. Thesecond sensing layer 250 includes a plurality of secondtransparent electrode patterns 252. Thesecond sensing layer 250 is disposed at the second side P2 of the first carryingportion 212 so that the secondtransparent electrode patterns 252 are respectively connected to the second connection lines 230. - In the present embodiment, the
first sensing layer 240 is attached to the first side P1 of the first transparentflexible substrate 210, and thefirst connection lines 220 are located between thefirst sensing layer 240 and the first transparentflexible substrate 210. Thesecond sensing layer 250 is attached to the second side P2 of the first transparentflexible substrate 210, and thesecond connection lines 230 are located between thesecond sensing layer 250 and the first transparentflexible substrate 210. Thetouch panel 200 further includes atransparent cover 260 and anadhesive layer 270. Theadhesive layer 270 is disposed on thefirst sensing layer 240 so that thetransparent cover 260 is adhered to thefirst sensing layer 240 through theadhesive layer 270. - To be specific, the
first connection lines 220 are disposed along the edge of the first carryingportion 212 at the first side P1 and extended to the first leadingportion 214. Thefirst sensing layer 240 is adhered to the first side P1 of the first carryingportion 212 so that thefirst connection lines 220 are respectively connected with the corresponding firsttransparent electrode patterns 242. Accordingly, thefirst connection lines 220 can be considered as being disposed on the first side P1 of the first carryingportion 212 and corresponding to the firsttransparent electrode patterns 242. Thus, when thefirst sensing layer 240 is adhered to the first side P1 of the first carryingportion 212, the firsttransparent electrode patterns 242 can be precisely connected with the corresponding first connection lines 220. - The
second connection lines 230 are disposed along the edge of the first carryingportion 212 at the second side P2 and extended to the first leadingportion 214. Thesecond sensing layer 250 is adhered to the second side P2 of the first carryingportion 212 so that thesecond connection lines 230 are respectively connected with the corresponding secondtransparent electrode patterns 252. Accordingly, thesecond connection lines 230 can be considered as being disposed on the second side P2 of the first carryingportion 212 and corresponding to the secondtransparent electrode patterns 252. Thus, when thesecond sensing layer 250 is adhered to the second side P2 of the first carryingportion 212, the secondtransparent electrode patterns 252 can be precisely connected with the corresponding second connection lines 230. - Additionally, in the present embodiment, the first
transparent electrode patterns 242 and the secondtransparent electrode patterns 252 are respectively striped patterns, and the extended direction of the firsttransparent electrode patterns 242 is substantially perpendicular to that of the secondtransparent electrode patterns 252, as shown inFIG. 2 . Accordingly, after thefirst sensing layer 240 and thesecond sensing layer 250 are respectively adhered to the first side P1 and the second side P2 of the first carryingportion 212, the stripe-shaped firsttransparent electrode patterns 242 and secondtransparent electrode patterns 252 form a cross over net structure such that thetouch panel 200 can work through touch sensing. - The material of the
first connection lines 220 and thesecond connection lines 230 includes a metal or a transparent conductive material. In the present embodiment, thefirst connection lines 220 and thesecond connection lines 230 are indium tin oxide (ITO) lines. However, in other embodiments of the application, thefirst connection lines 220 and thesecond connection lines 230 may also be made of copper or any other metal or any other transparent conductive material. - The material of the first
transparent electrode patterns 242 and the secondtransparent electrode patterns 252 includes a transparent conductive material. In the present embodiment, the material of the firsttransparent electrode patterns 242 and the secondtransparent electrode patterns 252 is ITO. However, the application is not limited thereto, and in other embodiments of the application, the material of the firsttransparent electrode patterns 242 and the secondtransparent electrode patterns 252 may also be any other transparent conductive material, such as indium zinc oxide (IZO), aluminum zinc oxide (AZO), gallium zinc oxide (GZO), In2O3, ZnO, TiO2, or SnO2. -
FIG. 3A is a side view of the touch panel inFIG. 2 . Referring toFIG. 3A , in the present embodiment, the first carryingportion 212, thefirst sensing layer 240, and thesecond sensing layer 250 have substantially the same shape and size. Thus, after thefirst sensing layer 240 and thesecond sensing layer 250 are respectively adhered to the first carryingportion 212 of the first transparentflexible substrate 210, thefirst connection lines 220 between thefirst sensing layer 240 and the first transparentflexible substrate 210 and thesecond connection lines 230 between thesecond sensing layer 250 and the first transparentflexible substrate 210 can be led out of thefirst sensing layer 240 and thesecond sensing layer 250 through the first leadingportion 214. - The
first connection lines 220 and thesecond connection lines 230 extended from the first carryingportion 212 to the first leadingportion 214 of the first transparentflexible substrate 210 can be electrically connected to an external device through a plurality offirst contacts 214 a and a plurality ofsecond contacts 214 b on the first leadingportion 214 and the first leadingportion 214. - To be specific, the first leading
portion 214 has a plurality offirst contacts 214 a and a plurality ofsecond contacts 214 b. Thefirst contacts 214 a and thesecond contacts 214 b are respectively disposed on two sides of the first leadingportion 214 and are respectively connected with thefirst connection lines 220 between thefirst sensing layer 240 and the first transparentflexible substrate 210 and thesecond connection lines 230 between thesecond sensing layer 250 and the first transparentflexible substrate 210, as shown inFIG. 3A . -
FIG. 3B is a side view of a touch panel according to another embodiment of the application. Referring toFIG. 3B , in the present embodiment, thefirst contacts 214 a and thesecond contacts 214 b on the first leadingportion 214 are disposed on the same side of the first leadingportion 214. To be specific, the first leadingportion 214 hasconductive holes 214 c, and thesecond connection lines 230 at the second side P2 of the first leadingportion 214 are extended to the first side P1 through theconductive holes 214 c, as shown inFIG. 3B . Accordingly, thefirst contacts 214 a and thesecond contacts 214 b disposed at the first side P1 of the first leadingportion 214 can be respectively connected with thefirst connection lines 220 between thefirst sensing layer 240 and the first transparentflexible substrate 210 and thesecond connection lines 230 between thesecond sensing layer 250 and the first transparentflexible substrate 210. - Thereby, regardless of whether the
first contacts 214 a and thesecond contacts 214 b are respectively disposed on two sides of the first leadingportion 214 or are disposed on the same side of the first leadingportion 214, thefirst connection lines 220 and thesecond connection lines 230 can always be electrically connected to an external device through the first leadingportion 214, thefirst contacts 214 a, and thesecond contacts 214 b. When the external device provides a signal to thetouch panel 200, the signal can be transmitted to the corresponding firsttransparent electrode pattern 242 and secondtransparent electrode pattern 252 through thefirst connection lines 220 and thesecond connection lines 230, so as to allow thetouch panel 200 to achieve the touch sensing function. - Reference will now be made in detail to the present embodiment of the application, wherein like reference numerals refer to the like elements throughout, and similar technical contents can be referred to the embodiment described above therefore will not be described in following embodiments.
-
FIG. 4 is an explosion diagram of a touch panel according to another embodiment of the application. Referring toFIG. 4 , the major difference between thetouch panel 200′ in the present embodiment and thetouch panel 200 in foregoing embodiment is that besides thetouch panel 200, thetouch panel 200′ further includes a second transparentflexible substrate 280, and the first transparentflexible substrate 210 is attached to the second transparentflexible substrate 280. The material of the second transparentflexible substrate 280 includes polymer. The material of the second transparentflexible substrate 280 may be the same as or different from the material of the first transparentflexible substrate 210. However, the application is not limited herein. - To be specific, in the present embodiment, the
first sensing layer 240 of thetouch panel 200′ is attached to the first side P1 of the first transparentflexible substrate 210 so that thefirst connection lines 220 are located between thefirst sensing layer 240 and the first transparentflexible substrate 210. Thesecond sensing layer 250 of thetouch panel 200′ is attached to one side of the second transparentflexible substrate 280 so that thesecond connection lines 230 are located between thesecond sensing layer 250 and the second transparentflexible substrate 280. - In the present embodiment, the second transparent
flexible substrate 280 includes asecond carrying portion 282 and a second leadingportion 284 connected to an edge of the second carryingportion 282. Accordingly, thesecond connection lines 230 are located between thesecond sensing layer 250 and the second transparentflexible substrate 280, disposed along the edge of the second carryingportion 282, and extended to the second leadingportion 284. - In other words, the
first connection lines 220 and thesecond connection lines 230 of thetouch panel 200′ are respectively disposed on the first transparentflexible substrate 210 and the second transparentflexible substrate 280, and thefirst sensing layer 240 and thesecond sensing layer 250 are respectively adhered to the first transparentflexible substrate 210 and the second transparentflexible substrate 280. After sequentially attaching the connection lines and the sensing layers to the two transparent flexible substrates, the first transparentflexible substrate 210 is attached to the second transparentflexible substrate 280 to allow thetouch panel 200′ to achieve the touch sensing function. -
FIG. 5 is a side view of the touch panel inFIG. 4 . Referring toFIG. 5 , in the present embodiment, the first carryingportion 212 and the second carryingportion 282 have substantially the same size and shape, and the first carryingportion 212, thefirst sensing layer 240, and thesecond sensing layer 250 described above have substantially the same size and shape. Thus, when the first transparentflexible substrate 210 is attached to the second transparentflexible substrate 280, thefirst connection lines 220 between thefirst sensing layer 240 and the first transparentflexible substrate 210 and thesecond connection lines 230 between thesecond sensing layer 250 and the second transparentflexible substrate 280 can be led out of thefirst sensing layer 240 and thesecond sensing layer 250 through the first leadingportion 214 and the second leadingportion 284. - On the other hand, the first leading
portion 214 covers the second leadingportion 284 and exposes the endmost part of the upper surface of the second leadingportion 284, so that the ends of the first leadingportion 214 and the second leadingportion 284 form a stepped structure. Thetouch panel 200′ further includes a plurality offirst contacts 290 a and a plurality ofsecond contacts 290 b. Thefirst contacts 290 a are disposed on the upper surface of the first leadingportion 214 and are respectively connected with the first connection lines 220. Thesecond contacts 290 b are disposed on the exposed endmost part of the upper surface of the second leadingportion 284 and are respectively connected with the second connection lines 230. - In a word, the difference between the connection line structures of the
touch panel 200′ and thetouch panel 200 is that in thetouch panel 200, thefirst connection lines 220 and thesecond connection lines 230 are respectively disposed at both sides of the first transparentflexible substrate 210, while in thetouch panel 200′, thefirst connection lines 220 and thesecond connection lines 230 are respectively disposed on the first transparentflexible substrate 210 and the second transparentflexible substrate 280, and two transparent flexible substrates are then adhered. Namely, in thetouch panel 200′, thefirst connection lines 220 and thesecond connection lines 230 are distributed on the two transparent flexible substrates. Accordingly, the circuit layout area on a single transparent flexible substrate can be reduced. -
FIG. 6A is a top-view flowchart of fabricating the touch panel inFIG. 1 . Referring toFIG. 6A , in thetouch panel 100, one or more layers of conductive films are first disposed to form thesensor 110, so as to form the touch sensing units. Theadhesive layer 120 is then coated on thesensor 110, and the adhesiveconductive layer 130 is disposed at the edge of thesensor 110 to attach one side of theFPC 140 to thesensor 110. Finally, thetransparent cover 150 is attached to thesensor 110 through theadhesive layer 120 to complete thetouch panel 100. -
FIG. 6B is a top-view flowchart of fabricating the touch panel inFIG. 2 . Referring toFIG. 6B , in thetouch panel 200, thefirst sensing layer 240 and thesecond sensing layer 250 are respectively adhered to both sides of the first transparentflexible substrate 210 having thefirst connection lines 220 and thesecond connection lines 230, so as to form touch sensing units (only the topmostfirst sensing layer 240 is illustrated inFIG. 6B ), and theadhesive layer 270 is coated on thefirst sensing layer 240. Finally, thetransparent cover 260 is attached to thefirst sensing layer 240 through theadhesive layer 270, so as to complete thetouch panel 200. -
FIG. 6C is a top-view flowchart of fabricating the touch panel inFIG. 4 . Referring toFIG. 6C , in thetouch panel 200′, thefirst sensing layer 240 is adhered to the first transparentflexible substrate 210 having thefirst connection lines 220, and thesecond sensing layer 250 is adhered to the second transparentflexible substrate 280 having the second connection lines 230. Then, the first transparentflexible substrate 210 is attached to the second transparentflexible substrate 280 to form touch sensing units (only the topmostfirst sensing layer 240 is illustrated inFIG. 6C ). Next, theadhesive layer 270 is coated on thefirst sensing layer 240. Finally, thetransparent cover 260 is attached to thefirst sensing layer 240 through theadhesive layer 270, so as to complete thetouch panel 200′. - It can be understood by comparing
FIG. 6A ,FIG. 6B , andFIG. 6C that in thetouch panel 100, theFPC 140 is attached to the touch sensing units, while in thetouch panel 200 and thetouch panel 200′, the touch sensing units are formed by directly disposing the connection lines and attaching the sensing layers onto the flexible substrates. Thus, the material cost and process for adhering theFPC 140 are saved in thetouch panel 200 and thetouch panel 200′, and the lateral sizes of thetouch panel 200 and thetouch panel 200′ without theFPC 140 are smaller than that of thetouch panel 100 with theFPC 140. In addition, as described above, in thetouch panel 100, theFPC 140 of a certain thickness is attached to the edge of thesensor 110. While in thetouch panel 200 and thetouch panel 200′, the first carryingportion 212, thefirst sensing layer 240, thesecond sensing layer 250, and even the second carryingportion 282 have substantially the same shape and size. Thus, thetouch panel 200 and thetouch panel 200′ can have evenly adhered areas. -
FIG. 7 is an explosion diagram of a handheld electronic device according to an embodiment of the application. Referring toFIG. 7 , in the present embodiment, the handheld electronic device 300 includes abody 310, amain processor system 320, adisplay panel 330, and thetouch panel 200 described above. Thebody 310 has adisplay opening 312. Themain processor system 320 is disposed in thebody 310. Thedisplay panel 330 is disposed at thedisplay opening 312 and electrically connected to themain processor system 320. Thetouch panel 200 is disposed on thedisplay panel 330. - For the clarity of illustration,
FIG. 7 does not show all the components but only the outermosttransparent cover 260 of thetouch panel 200. In the present embodiment, when thetouch panel 200 is disposed on thedisplay panel 330 and assembled to thedisplay opening 312, thedisplay opening 312 is covered by the outermosttransparent cover 260 of thetouch panel 200, and a user can operate the handheld electronic device 300 by touching thetransparent cover 260. - Additionally, the first leading
portion 214 protruded from thetouch panel 200 is disposed in thebody 310 through thedisplay opening 312, so that thefirst connection lines 220 and the second connection lines 230 (as shown inFIG. 2 ) can be electrically connected to themain processor system 320 through the first leadingportion 214. Accordingly, themain processor system 320 of the handheld electronic device 300 can supply power, and the power can be transmitted to thetouch panel 200 through thefirst connection lines 220 and thesecond connection lines 230, so that thetouch panel 200 can achieve the touch sensing function. - When the user touches the
touch panel 200 to input a command, the command signal is transmitted to themain processor system 320 through thefirst connection lines 220 and the second connection lines 230. Accordingly, the user can operate the handheld electronic device 300 by touching thetouch panel 200. After that, information output by the handheld electronic device 300 is displayed on thedisplay panel 330. In the present embodiment, the adhesive layers of thetouch panel 200 are made of transparent materials, so that the user can view the information and continues to input commands according to requirements through thetransparent touch panel 200. -
FIG. 8 is an explosion diagram of a handheld electronic device according to another embodiment of the application. Referring toFIG. 8 , in the present embodiment, the handheld electronic device 300′ includes abody 310, amain processor system 320, adisplay panel 330, and thetouch panel 200′ described above. The major difference between the handheld electronic device 300′ and the handheld electronic device 300 is that the handheld electronic device 300′ has thetouch panel 200 instead of thetouch panel 200′. - For the clarity of illustration,
FIG. 8 does not show all the components of thetouch panel 200′ but only the outermosttransparent cover 260 thereof. In the present embodiment, when thetouch panel 200′ is disposed on thedisplay panel 330 and assembled to thedisplay opening 312, thedisplay opening 312 is covered by the outermosttransparent cover 260 of thetouch panel 200′, and a user can operate the handheld electronic device 300′ by touching thetransparent cover 260. - In addition, the first leading
portion 214 and the second leadingportion 284 protruded from thetouch panel 200′ is disposed in thebody 310 through thedisplay opening 312, so that thefirst connection lines 220 and thesecond connection lines 230 can be electrically connected to themain processor system 320 through the first leadingportion 214 and the second leadingportion 284. -
FIG. 9 is an enlarged view of the main processor system of the handheld electronic device inFIG. 8 . Referring toFIG. 9 , in the present embodiment, the first leadingportion 214 and the second leadingportion 284 can be bent to a back side of thedisplay panel 330 relative to thetouch panel 200′ along the edge of thedisplay panel 330. Themain processor system 320 includes acircuit board 322. Thecircuit board 322 has a stepped junction jointed with the stepped structure of thetouch panel 200′ such that thefirst contacts 290 a and thesecond contacts 290 b are electrically connected to themain processor system 320. - Accordingly, the
main processor system 320 of the handheld electronic device 300′ can supply power, and the power can be transmitted to thetouch panel 200′ through thefirst contacts 290 a, thesecond contacts 290 b, thefirst connection lines 220, and thesecond connection lines 230, so that thetouch panel 200′ can achieve the touch sensing function. - When a user touches the
touch panel 200′ to input a command, the command signal is transmitted to themain processor system 320 through thefirst connection lines 220 and the second connection lines 230. Accordingly, the user can operate the handheld electronic device 300′ by touching thetouch panel 200′. After that, information output by the handheld electronic device 300′ is displayed on thedisplay panel 330. In the present embodiment, the adhesive layers of thetouch panel 200′ are made of transparent materials, so that the user can view the information and continues to input commands according to requirements through thetransparent touch panel 200′. - As described above, the application provides a touch panel and a handheld electronic device using the same. In the touch panel, a plurality of first connection lines and a plurality of second connection lines are respectively disposed on carrying portions of transparent flexible substrates and extended out of the substrates, and signals are transmitted to transparent electrode patterns of sensing layers through the connection lines, so that the FPC in the conventional technique is replaced and a touch sensing function is achieved by the touch panel. Thereby, part of the adhering process and the cost of the adhesive material are saved, the lateral size of the touch panel is reduced, and evenly adhered areas are achieved in the touch panel provided by the application. Moreover, by assembling the touch panel onto a handheld electronic device as an input device, a user can touch the touch panel to input commands and the operation of the handheld electronic device can be made very convenient.
- It will be apparent to those skilled in the art that various modifications and variations can be made to the structure of the application without departing from the scope or spirit of the application. In view of the foregoing, it is intended that the application cover modifications and variations of this application provided they fall within the scope of the following claims and their equivalents.
Claims (8)
1. A touch panel, comprising:
a first transparent flexible substrate, having a first side and a second side opposite to the first side, and comprising a first carrying portion and a first leading portion connected to an edge of the first carrying portion;
a plurality of first connection lines, disposed at the first side, and extended from the first carrying portion to the first leading portion;
a plurality of second connection lines, disposed at the second side, and extended from the first carrying portion to the first leading portion;
a first sensing layer, attached to the first side of the first transparent flexible substrate and comprising a plurality of first transparent electrode patterns disposed at the first carrying portion, wherein the first connection lines are located between the first sensing layer and the first transparent flexible substrate, the first connection lines cover a portion of the first sensing layer and are led out of the first sensing layer through the first leading portion, and the first transparent electrode patterns are respectively connected with the first connection lines; and
a second sensing layer, attached to the second side of the first transparent flexible substrate and comprising a plurality of second transparent electrode patterns disposed at the first carrying portion, wherein the second connection lines are located between the second sensing layer and the first transparent flexible substrate, the second connection lines cover a portion of the second sensing layer and are led out of the second sensing layer through the first leading portion, and the second transparent electrode patterns are respectively connected with the second connection lines.
2. The touch panel according to claim 1 further comprising:
a transparent cover, adhered on the first sensing layer; and
an adhesive layer, disposed between the transparent cover and the first sensing layer.
3. The touch panel according to claim 1 , wherein a material of the first transparent flexible substrate comprises a polymer.
4. The touch panel according to claim 1 , wherein a material of the first connection lines and the second connection lines comprises a metal or a transparent conductive material.
5. The touch panel according to claim 1 , wherein the first connection lines and the second connection lines are disposed along an edge of the first carrying portion.
6. The touch panel according to claim 1 , wherein the first transparent electrode patterns and the second transparent electrode patterns are respectively striped patterns, and an extended direction of the first transparent electrode patterns is substantially perpendicular to an extended direction of the second transparent electrode patterns.
7. The touch panel according to claim 1 , wherein a material of the first transparent electrode patterns and the second transparent electrode patterns comprises a transparent conductive material.
8. A handheld electronic device, comprising:
a body, having a display opening;
a main processor system, disposed in the body;
a display panel, disposed at the display opening, and electrically connected to the main processor system; and
the touch panel according to claim 1 , disposed on the display panel.
Priority Applications (1)
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US14/855,387 US20160011696A1 (en) | 2012-04-13 | 2015-09-16 | Touch panel and handheld electronic device |
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KR102361436B1 (en) * | 2017-06-13 | 2022-02-11 | 삼성디스플레이 주식회사 | Display apparatus |
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Also Published As
Publication number | Publication date |
---|---|
TW201342396A (en) | 2013-10-16 |
US9164548B2 (en) | 2015-10-20 |
TWI508106B (en) | 2015-11-11 |
CN103376934A (en) | 2013-10-30 |
US20130271384A1 (en) | 2013-10-17 |
CN103376934B (en) | 2017-06-20 |
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