WO2002067043A1 - Liquid crystal display module with integrated key function - Google Patents
Liquid crystal display module with integrated key function Download PDFInfo
- Publication number
- WO2002067043A1 WO2002067043A1 PCT/DE2002/000456 DE0200456W WO02067043A1 WO 2002067043 A1 WO2002067043 A1 WO 2002067043A1 DE 0200456 W DE0200456 W DE 0200456W WO 02067043 A1 WO02067043 A1 WO 02067043A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- contact
- lcd
- lcd module
- module according
- film
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
-
- 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
- G06F1/1601—Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/133317—Intermediate frames, e.g. between backlight housing and front frame
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2200/00—Indexing scheme relating to G06F1/04 - G06F1/32
- G06F2200/16—Indexing scheme relating to G06F1/16 - G06F1/18
- G06F2200/161—Indexing scheme relating to constructional details of the monitor
- G06F2200/1612—Flat panel monitor
Definitions
- the invention relates to an LCD module for small devices, in particular for mobile telephones, cameras, Discman, camcorders and MP3 players.
- buttons can be used to control the device.
- Each key has at least one function relevant to the device. So far, the key function has essentially been realized by two different designs.
- microswitches are provided on a separate circuit board that is in contact with the LCD module, which in turn are mechanically actuated via the corresponding side buttons and thereby indirectly trigger the button function.
- the button function is implemented using small, separate printed circuit boards that are anchored in the housing of the LCD module.
- An object of the present invention is to find a way of integrating the side buttons into the overall device in a space-saving and ergonomic manner. This object is achieved by an LCD module according to claim 1. Further advantageous embodiments are listed in the subclaims.
- an LCD module which has at least the following elements: a) an LCD, b) a support for the LCD, c) a key arranged on one side of the module and d) a contact foil for realizing a key function , wherein the contact film is arranged directly on the carrier.
- the carrier for the LCD can implement its carrier function in various ways.
- the LCD can, for example, be glued to the carrier or applied in some other way.
- the carrier can also have a latching mechanism by means of which the LCD is latched in and thus carried or supported.
- the contact foil can be a flexible printed circuit board or a rigid printed circuit board.
- the contact film is equipped with at least one metal mandrel.
- the contact film has polydome film. It is a polydome film with carbon printing. Rubber with carbon printing is also conceivable.
- the different foils result in a different tactile feeling for the user.
- the support for the LCD can be used as a light guide.
- One or more surfaces are attached to the light guide of the LCD module. The shape of these surfaces can be adapted to the circumstances and requirements, ie they can be flat or curved, for example.
- the contact film is then applied to these surfaces.
- the contact foil can be glued on, snapped into place if a corresponding snap-in device is provided or fastened by means of clips.
- metal domes are preferably provided on the contact film, the open contact on the contact film is closed with the aid of them.
- the support for the LCD also serves as a support for the contact film and thus automatically forms a counter bearing for the key forces exerted by the device user saves a maximum of space.
- the keys are thus integrated into the device in a space-saving and ergonomic manner.
- the carrier is designed as a frame for receiving the LCD and possibly also the light guide, in which case the contact film is then arranged directly on the frame.
- the frame now serves as a carrier for the contact film and thus forms the counter bearing for the key forces.
- the frame provided takes up a little more space than in the aforementioned embodiment, but depending on the requirements placed on the device, there may be different levels of stability and robustness, and then the embodiment with the frame would be preferable. In this respect, it must be considered whether the stability requirement or the size of the device have priority in a special case.
- the at least one button is equipped with at least one contact element which establishes the contact.
- the contact film is part of a flexible printed circuit board encompassed by the carrier.
- the flexible printed circuit board can be, for example, a keyboard flex or an LCD flex.
- FIG. 1 shows an embodiment of an LCD module according to the invention, the light guide of the LCD module directly serving as a carrier for the contact film.
- the contact foil and the keys are not shown here;
- Fig. 2 shows the embodiment of Figure 1, here the contact sheet is equipped with metal domes. The buttons are not shown here;
- FIG. 3 shows the embodiment according to FIG. 2, here the keys are shown which press on the metal domes;
- FIG. 4 shows an embodiment of a contact foil according to the invention as part of a keyboard flex
- FIG. 5 shows another embodiment of a contact film according to the invention as part of an LCD flex
- FIG. 6 shows a further embodiment of an LCD module according to the invention, the light guide of the LCD module serving directly as a carrier for the contact film.
- the contact foil and the keys are not shown here;
- FIG. 7 shows an embodiment of a frame according to the invention, which forms part of the LCD module
- FIG. 8 shows a further embodiment of an LCD module according to the invention with a frame.
- FIG. 1 shows an embodiment of an LCD module according to the invention.
- the main assembly of the LCD module here has a light guide 1 in addition to the LCD.
- a surface 2 is attached to the light guide 1 of the LCD module. In the case shown, this is a flat surface, but the surface could also be shaped differently, for example be curved.
- This surface 2 serves to apply the contact film, which is shown in FIG. 2.
- a latching device is provided on surface 2, so that the contact film can be snapped into place.
- the latching device consists of two projecting hooks 4 at the top and bottom of the surface 2.
- FIG. 2 the embodiment of FIG. 1 is supplemented by the representation of the contact film, with a surface 2 on which the contact film 3 is applied to the light guide 1 of the LCD module, as in FIG. 1.
- the contact film 3 is attached to the surface 2 by snapping it into place.
- the locking device corresponds to that which is already shown in Figure 1.
- the contact film 3 has bulges 5 at the corresponding points, which interact with the hooks 4 in such a way that a firm hold of the contact film 3 on the surface 2 is ensured.
- the contact foil 3 has four metal domes 6, which close the open contact on the contact foil. The metal domes 6 are preferably glued to the contact film 3.
- FIG. 3 shows a further embodiment of an LCD module according to the invention.
- a surface 2 is attached to the light guide 1, on which the contact film 3 is applied.
- the contact film 3 is snapped onto the contact film 3 by means of the hooks 4 provided for this purpose on the surface 2 and the corresponding bulges 5.
- the contact foil 3 is also equipped with four metal domes 6, on which the side buttons 7 shown here press. By pressing the buttons 7 by a device user, the metal domes 6 are pressed, which leads to the triggering of the contact and thus to the realization of the corresponding button function.
- the keys 7 shown here each have different symbols on their front. One or more key functions are assigned to each symbol, so that when the keys 7 are pressed, the device user knows which function is triggered thereby.
- FIG. 4 shows an embodiment of a keyboard flex 8 according to the invention.
- the contact sheet 3 for the keys here forms part of the keyboard flex, namely the part by which a conventional keyboard flex has been enlarged in the form shown here.
- the contact film 3 for the keys is implemented very inexpensively.
- FIG. 5 shows an alternative, cost-effective implementation of a contact foil for keys, namely by enlarging a conventional LCD flex 9, to FIG. 4.
- the implementation of the contact foil 3 for the keys by enlarging an already existing flexible printed circuit board is very inexpensive.
- FIG. 6 shows a further embodiment of an LCD module according to the invention.
- a frame 10 which receives the LCD and the light guide 1.
- a plurality of flat surfaces 2 are provided on the frame 10, on which a contact foil can be applied.
- the contact film must be applied differently here, for example by gluing.
- FIG. 7 shows another embodiment of an LCD module according to the invention.
- Frame 10 is provided for receiving the LCD and the light guide.
- a plurality of surfaces 2 are attached to the frame 10, on which the contact foil can be applied.
- a latching device in the form of hooks 4 is again provided, into which a contact film can be latched.
- FIG. 8 shows a further embodiment of an LCD module according to the invention.
- a frame part 10 is shown here, which accommodates the LCD and the light guide 1.
- a plurality of surfaces 2 are provided on the frame 10, on which a contact film 3 can be applied.
- a contact film 3 is shown, which is snapped onto one of the surfaces 2.
- the locking device shown in turn consists of four hooks 4, which are attached to the surface 2.
- the contact film 3 has suitable bulges 5 at the corresponding points, so that a firm engagement of the film on the corresponding surface 2 is ensured.
- the contact film 3 also has four metal domes 6, by means of which the open contact on the contact film is closed, as explained earlier. Corresponding buttons are then applied to this contact film 3, when actuated a contact is indirectly triggered via the metal domes and the desired button function is thus realized.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02708226A EP1362258A1 (en) | 2001-02-16 | 2002-02-07 | Liquid crystal display module with integrated key function |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20103231U DE20103231U1 (en) | 2001-02-16 | 2001-02-16 | LCD module |
DE20103231.7 | 2001-02-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002067043A1 true WO2002067043A1 (en) | 2002-08-29 |
Family
ID=7953439
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2002/000456 WO2002067043A1 (en) | 2001-02-16 | 2002-02-07 | Liquid crystal display module with integrated key function |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1362258A1 (en) |
DE (1) | DE20103231U1 (en) |
TW (1) | TW569167B (en) |
WO (1) | WO2002067043A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5822690A (en) * | 1996-04-12 | 1998-10-13 | Motorola, Inc. | Multi-pole switch assembly providing display cover and virtual pivot action |
US5940153A (en) * | 1998-04-03 | 1999-08-17 | Motorola, Inc. | Display assembly having LCD and seal captured between interlocking lens cover and lightpipe |
DE19918053A1 (en) * | 1999-04-21 | 2000-11-02 | Siemens Ag | Mobile radio terminal especially mobile telephones |
EP1054420A1 (en) * | 1999-05-18 | 2000-11-22 | Molex Incorporated | Keyboard for an electrical or electronic apparatus and method of making the same |
-
2001
- 2001-02-16 DE DE20103231U patent/DE20103231U1/en not_active Expired - Lifetime
-
2002
- 2002-02-07 EP EP02708226A patent/EP1362258A1/en not_active Withdrawn
- 2002-02-07 WO PCT/DE2002/000456 patent/WO2002067043A1/en active Search and Examination
- 2002-02-08 TW TW091102365A patent/TW569167B/en not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5822690A (en) * | 1996-04-12 | 1998-10-13 | Motorola, Inc. | Multi-pole switch assembly providing display cover and virtual pivot action |
US5940153A (en) * | 1998-04-03 | 1999-08-17 | Motorola, Inc. | Display assembly having LCD and seal captured between interlocking lens cover and lightpipe |
DE19918053A1 (en) * | 1999-04-21 | 2000-11-02 | Siemens Ag | Mobile radio terminal especially mobile telephones |
EP1054420A1 (en) * | 1999-05-18 | 2000-11-22 | Molex Incorporated | Keyboard for an electrical or electronic apparatus and method of making the same |
Also Published As
Publication number | Publication date |
---|---|
DE20103231U1 (en) | 2001-07-05 |
EP1362258A1 (en) | 2003-11-19 |
TW569167B (en) | 2004-01-01 |
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