CN103294314B - A kind of capacitance touch screen with polarisation function - Google Patents
A kind of capacitance touch screen with polarisation function Download PDFInfo
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- CN103294314B CN103294314B CN201310184069.XA CN201310184069A CN103294314B CN 103294314 B CN103294314 B CN 103294314B CN 201310184069 A CN201310184069 A CN 201310184069A CN 103294314 B CN103294314 B CN 103294314B
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Abstract
The present invention relates to a kind of capacitance touch screen with polarisation function, including transparency carrier and be arranged on the inductive layer inside transparency carrier, inductive layer includes at least one circuit supporting layer and is arranged on the sensor circuit on circuit supporting layer, it is characterized by: also include polarizing layer, polarizing layer is arranged between transparency carrier and inductive layer, and the two sides of polarizing layer are fitted with the medial surface of transparency carrier, the lateral surface of inductive layer by adhesive layer respectively；Circuit supporting layer is the plastic foil of zero birefraction, and at least one side of circuit supporting layer is provided with a plurality of staggered webbed groove；Being filled with fine conductive granule in groove, the conductive particle mutually webbed conductive yarn of the company's of knot shape, netted conductive yarn constitutes sensor circuit.Owing to selecting, thermostability is poor, have the plastics of zero birefraction characteristic as circuit supporting layer, it is ensured that the polarized condition of the polarized light that polarizing layer is produced is unaffected, it is ensured that the normal display of picture, and manufacturing process compared with simple, manufacturing cost is relatively low.
Description
Technical field
The present invention relates to a kind of capacitance touch screen, particularly relate to a kind of capacitance touch screen with polarisation function.
Background technology
Projection-type capacitive touch screen has highly sensitive, can to realize multiple point touching advantage, has been widely used on the multiple consumer electronics product such as mobile phone, panel computer.At present, projection-type capacitive touch screen has the various structures such as single-glass, double glazing, adhesive film type, wherein, transparent oxide conducting film (such as tin indium oxide) is typically first coated on resistant to elevated temperatures PET (Polyethylene terephthalate) overlay by the capacitance touch screen of adhesive film type structure by the vacuum deposition process of high temperature, it is patterned into the sensor circuit for realizing capacitance touch inducing function (including induction electrode and perimeter circuit) again, finally this PET film is attached on a transparency carrier formation capacitance touch screen.The manufacturing process of the capacitance touch screen of this adhesive film type is simple, one of most practical a kind of structure.
When transparent oxide conducting film is coated with on the plastic film, owing to transparent oxide conducting film typically has higher refractive index (n ≈ 1.9), bigger refractivity is there is between itself and plastic layer (n ≈ 1.5), the induction electrode making this adhesive film type capacitance touch screen also exists stronger reflection light, in addition, when capacitance touch screen is arranged on display front, capacitance touch screen inner surface, each faces such as display outer surface there is also certain reflection light, these reflection light the most all can reduce electronic product readability under strong light environment.
In prior art, it has been proposed that above-mentioned reflection light is reduced in preposition for the polarizing layer of the flat faced display front to capacitance touch screen, but, for the capacitance touch screen of adhesive film type structure, owing to the resistant to elevated temperatures hyaline membrane materials such as PET are all easy to produce uncontrollable non-zero birefringence, the polarized condition that can cause polarized light changes and has influence on the normal display of flat faced display picture, and the method that therefore it is difficult with this preposition polarizing layer reaches to eliminate the purpose of reflection light.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of capacitance touch screen with polarisation function, this capacitance touch screen with polarisation function under strong light environment readable more preferably, and be able to ensure that the normal display of picture.The technical scheme used is as follows:
A kind of capacitance touch screen with polarisation function, including transparency carrier and be arranged on the inductive layer inside transparency carrier, inductive layer includes the circuit supporting layer of at least one flexible and transparent and is arranged on the sensor circuit on circuit supporting layer, it is characterized by: also include polarizing layer, polarizing layer is arranged between transparency carrier and inductive layer, and the two sides of polarizing layer are fitted with the medial surface of transparency carrier, the lateral surface of inductive layer by adhesive layer respectively；Described circuit supporting layer is the plastic foil of zero birefraction, and at least one side of circuit supporting layer is provided with a plurality of groove, and a plurality of groove is interlaced to be reticulated；Being filled with fine conductive granule in groove, the conductive particle mutually webbed conductive yarn of the company's of knot shape, netted conductive yarn constitutes described sensor circuit.
Above-mentioned outside, inner side are for operator, are outside near the side of operator, and the side away from operator is inner side.
The capacitance touch screen with polarisation function of the present invention, from the position relationship of polarizing layer, the structure of inductive layer, material, process conditions (such as temperature etc.) many-side is started with, the structure of capacitance touch screen is comprehensively arranged, solve readability on the whole, normal display, manufacturing process, the problems such as manufacturing cost: by polarizing layer is separated from display unit main body, and be attached between the transparency carrier of capacitance touch screen and inductive layer, realize the preposition of polarizing layer, sponge the major part reflection light from conductive yarn and each face, to reach to improve the purpose that electronic product is readable under strong light environment；Owing to sensor circuit is made up of netted conductive yarn rather than is formed by transparent oxide conducting film, thus there is not the electrode reflection light produced by transparent oxide conducting film, the readability under high light is more preferably；Owing to not containing the oxidic transparent conducting film needing high-temperature technology to deposit, because of without selecting resistant to elevated temperatures plastic foil as circuit supporting layer, and multiple thermostability can be selected poor, there are the plastics of zero birefraction characteristic as circuit supporting layer, such as, optical property and economy can be selected the most ideal, but the TAC that thermostability is the best (cellulose triacetate) film is as circuit supporting layer, this material typically has the characteristic of zero birefraction, the polarized condition of the polarized light that guarantee polarizing layer is produced is unaffected, guarantee the normal display of picture, and manufacturing process is simpler, manufacturing cost is relatively low.Carry out in addition, the sensor circuit that this conductive yarn is constituted can regulate the sectional area of conductive yarn by the degree of depth of groove, thus improve the electric conductivity of conductive yarn, this mode is typically not result in the increase of conductive yarn reflective surface area, thus, by the degree of depth, width and the mesh-density of reasonable design groove, the reflection of conductive yarn can be reduced further so that touch control display readability under strong light environment is higher.
In a kind of concrete scheme of the present invention, described inductive layer includes one layer of circuit supporting layer, and described sensor circuit is arranged on the side of circuit supporting layer.Sensor circuit can be arranged on outside or the inner side of circuit supporting layer, thus has the advantage that film layer is less, reflectance is lower, be easier to enforcement, and sensor circuit can use various single-layer electrodes design conventional in capacitance touching control technology.
In the another kind of concrete scheme of the present invention, described inductive layer includes the two-tier circuit supporting layer mutually bonded, and described sensor circuit sets up separately on two-tier circuit supporting layer.Two-layer sensor circuit is separately positioned on two-layer supporting layer, then two-layer supporting layer is glued together, such that it is able to use the two-layer electrode design in capacitance touching control technology with more induction point.
In another concrete scheme of the present invention, described inductive layer includes one layer of circuit supporting layer, and described sensor circuit is arranged on the both sides of circuit supporting layer.Sensor circuit is arranged on the both sides of circuit supporting layer, makes sensor circuit can use outside the two-layer electrode design of more induction point, also makes that film layer is less, reflectance is lower.
Polarizing layer typically has the structure of inside and outside two-layer one layer of light polarizing film of supporting layer clamping, so that overall structure is simpler, film layer is less, preferred version as the present invention, described polarizing layer only includes outer polarisation supporting layer and light polarizing film, described in be in outermost circuit supporting layer and fit with the medial surface of light polarizing film as the interior polarisation supporting layer of polarizing layer.Owing to outermost circuit supporting layer will be in also serve as the interior polarisation supporting layer of polarizing layer simultaneously, thus eliminate one layer of supporting layer of polarizing layer so that integral membrane layer is less, and structure is simpler.
Above-mentioned sensor circuit can be connected with outside realization by certain leading-out wire structure, such as, certain FPC(flexible PCB can be used) external connection, it is connected on sensor circuit by anisotropy conductiving glue, realize sensor circuit and outside connection, so that overall structure is simpler, as the preferred version of the present invention, described circuit supporting layer is provided with outward extending lead division, and lead division is provided with the extraction line end of sensor circuit.By arranging lead division, arranging extraction line end on lead division, can save the leading-out wire structure additionally arranged for inductive layer, overall structure is simpler.
Between above-mentioned polarizing layer and inductive layer, between circuit supporting layer, between inductive layer and transparency carrier or between touch screen and flat faced display, the jointing material of any zero birefraction such as acrylic resin, Optical transparent adhesive (OCA glue) can be selected mutually to bond.
Accompanying drawing explanation
Fig. 1 is the top view of the embodiment of the present invention one；
Fig. 2 is the layer structure schematic diagram of the embodiment of the present invention one；
Fig. 3 is the inductive layer structural representation of the embodiment of the present invention one；
Fig. 4 is the Fig. 3 sectional view along A-A；
Fig. 5 is the layer structure schematic diagram of the embodiment of the present invention two；
Fig. 6 is the top view of the embodiment of the present invention two；
Fig. 7 is the schematic diagram of two-layer sensor circuit in Fig. 6；
Fig. 8 is the layer structure schematic diagram of the embodiment of the present invention three.
Detailed description of the invention
It is described further with the preferred embodiment of the present invention below in conjunction with the accompanying drawings.
Embodiment one
As depicted in figs. 1 and 2, this capacitance touch screen with polarisation function, use single-layer electrodes design, including transparency carrier 1, be arranged on the inductive layer 2 inside transparency carrier 1, polarizing layer 3, and the coverage layer 4 of inductive layer 2 periphery is set；As in figure 2 it is shown, the inductive layer 2 circuit supporting layer 201 that includes one layer of flexible and transparent and the sensor circuit 202 that is arranged on circuit supporting layer 201；Polarizing layer 3 is arranged between transparency carrier 1 and inductive layer 2；Circuit supporting layer 201 is the plastic foil of zero birefraction, and as shown in Figure 3 and Figure 4, the lateral surface of circuit supporting layer 201 is provided with a plurality of groove 5, and a plurality of groove 5 is interlaced to be reticulated；Being filled with fine conductive granule 6(in groove 5 such as can select particle diameter about 20～the nano-sized carbon of 100nm, nanometer gold, nano-Ag particles to be filled in groove 5), conductive particle 6 is by certain adhesive composition mutually webbed conductive yarn of the company's of knot shape 7, and netted conductive yarn 7 constitutes sensor circuit 202.
Polarizing layer 3 only includes outer polarisation supporting layer 301 and light polarizing film 302, and circuit supporting layer 201 fits with the medial surface of light polarizing film 302 as the interior polarisation supporting layer of polarizing layer 3.
Circuit supporting layer 201 is provided with outward extending lead division 8, and lead division 8 is provided with the extraction line end 9 of sensor circuit 202.
As shown in Figure 3,4, in a kind of detailed description of the invention of the present embodiment, the thickness of circuit supporting layer 201 is about 50 μm, the width of groove 5, the degree of depth may each be about 5 μm, conductive yarn 7 at sensor circuit 202 is designed as being spaced the irregular hexagon net of about 100 μm, irregular hexagon net can avoid induction electrode the colour reflective effect of similar grating occur, perimeter circuit 10 is designed as being spaced the square net of about 10 μm, use square net, so that conductor length is shorter, resistance is lower.
Fitted by adhesive layer 11 between lateral surface and the lateral surface inductive layer 2 of transparency carrier 1 of the polarisation supporting layer 301 of above-mentioned polarizing layer 3, being fitted by adhesive layer 11 between circuit supporting layer 201 and polarizing layer 3, adhesive layer 11 can select the jointing material of any zero birefraction such as acrylic resin, Optical transparent adhesive (OCA glue).
In a kind of detailed description of the invention of the present embodiment, sensor circuit 202 is connected with outside realization by certain leading-out wire structure, as in figure 2 it is shown, use FPC external connection 12, it is connected on sensor circuit 202 by anisotropy conductiving glue 13, it is achieved sensor circuit 202 and outside connection.
Embodiment two
As shown in Figure 5, in the case of other parts are all identical with embodiment one, its difference is: circuit supporting layer 201 includes the first circuit supporting layer 2011 and the second circuit supporting layer 2012 mutually bonded, sensor circuit 202 includes the first sensor circuit 2021 and the second sensor circuit 2022, first sensor circuit 2021 is arranged on the first circuit supporting layer 2011, second sensor circuit 2022 is arranged on second circuit supporting layer 2012, again by the first circuit supporting layer 2011, second circuit supporting layer 2012 is glued together, such that it is able to use the two-layer electrode design in capacitance touching control technology with more induction point.
As shown in Figure 6 and Figure 7, the first sensor circuit 2021 on first circuit supporting layer 2011 is designed to the vertical bar electrode side by side extended along the Y direction, the second sensor circuit 2022 on second circuit supporting layer 2012 is designed to the vertical bar electrode side by side extended along the X direction, wherein, at X, the place of Y-direction vertical bar electrode crossover, the conductive yarn of vertical bar electrode is designed to respectively according to X, Y-direction is moved towards, make its mutually overlapping formed afterwards netted, at X, the place of Y-direction vertical bar electrode non-overlapping, X, Y electrode is both configured to the most netted, therefore, so that the induction electrode after overlap is netted everywhere, there is more consistent light transmittance.
Embodiment three
As shown in Figure 8, in the case of other parts are all identical with embodiment one, its difference is: sensor circuit 202 includes the first sensor circuit 2021 and the second sensor circuit 2022, first sensor circuit 2021 and the second sensor circuit 2022 are separately positioned on the both sides of circuit supporting layer 201, so it is in addition to can using the two-layer electrode of the most more induction point to design, and also makes that film layer is less, reflectance is lower.
In addition; it should be noted that the specific embodiment described in this specification, its each several part title etc. can be different; all equivalences done according to structure, feature and the principle described in inventional idea of the present invention or simple change, be all included in the protection domain of patent of the present invention.Described specific embodiment can be made various amendment or supplements or use similar mode to substitute by those skilled in the art; without departing from the structure of the present invention or surmount scope defined in the claims, protection scope of the present invention all should be belonged to.
Claims (2)
1. a capacitance touch screen with polarisation function, including transparency carrier and be arranged on the inductive layer inside transparency carrier, inductive layer includes the circuit supporting layer of at least one flexible and transparent and is arranged on the sensor circuit on circuit supporting layer, it is characterized by: also include polarizing layer, polarizing layer is arranged between transparency carrier and inductive layer, and the two sides of polarizing layer are fitted with the medial surface of transparency carrier, the lateral surface of inductive layer by adhesive layer respectively；Described circuit supporting layer is the plastic foil of zero birefraction, and at least one side of circuit supporting layer is provided with a plurality of groove, and a plurality of groove is interlaced to be reticulated；Being filled with fine conductive granule in groove, the conductive particle mutually webbed conductive yarn of the company's of knot shape, netted conductive yarn constitutes described sensor circuit；Circuit supporting layer includes the first circuit supporting layer and the second circuit supporting layer mutually bonded, sensor circuit includes the first sensor circuit and the second sensor circuit, first sensor circuit is arranged on the first circuit supporting layer, and the second sensor circuit is arranged on second circuit supporting layer；The first sensor circuit on first circuit supporting layer is designed to the vertical bar electrode side by side extended along the Y direction, the second sensor circuit on second circuit supporting layer is designed to the vertical bar electrode side by side extended along the X direction, wherein, in X, the place of Y-direction vertical bar electrode crossover, the conductive yarn of vertical bar electrode is designed to respectively according to X, Y-direction trend, making it mutually overlapping be formed netted afterwards, in X, the place of Y-direction vertical bar electrode non-overlapping, X, Y electrode are both configured to the most netted.
Having the capacitance touch screen of polarisation function the most as claimed in claim 1, it is characterized in that: described inductive layer includes one layer of circuit supporting layer, described sensor circuit is arranged on the both sides of circuit supporting layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310184069.XA CN103294314B (en) | 2013-05-17 | 2013-05-17 | A kind of capacitance touch screen with polarisation function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310184069.XA CN103294314B (en) | 2013-05-17 | 2013-05-17 | A kind of capacitance touch screen with polarisation function |
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| CN103294314A CN103294314A (en) | 2013-09-11 |
| CN103294314B true CN103294314B (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310184069.XA Active CN103294314B (en) | 2013-05-17 | 2013-05-17 | A kind of capacitance touch screen with polarisation function |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6225793B2 (en) * | 2014-03-28 | 2017-11-08 | 凸版印刷株式会社 | Touch sensor electrode, touch panel, and display device |
| CN108803955A (en) * | 2018-07-04 | 2018-11-13 | 三星电子（中国）研发中心 | A kind of touch-control system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1081633A2 (en) * | 1999-08-31 | 2001-03-07 | Daicel Chemical Industries, Ltd. | Touch panel and display device using the same |
| CN101976164A (en) * | 2010-10-18 | 2011-02-16 | 汕头超声显示器有限公司 | Capacitor touch screen |
| CN102043184A (en) * | 2009-10-09 | 2011-05-04 | Lg化学株式会社 | Integrated touch polarizer and touch panel comprising the same |
| CN102063951A (en) * | 2010-11-05 | 2011-05-18 | 苏州苏大维格光电科技股份有限公司 | Transparent conductive film and manufacturing method thereof |
-
2013
- 2013-05-17 CN CN201310184069.XA patent/CN103294314B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1081633A2 (en) * | 1999-08-31 | 2001-03-07 | Daicel Chemical Industries, Ltd. | Touch panel and display device using the same |
| CN102043184A (en) * | 2009-10-09 | 2011-05-04 | Lg化学株式会社 | Integrated touch polarizer and touch panel comprising the same |
| CN101976164A (en) * | 2010-10-18 | 2011-02-16 | 汕头超声显示器有限公司 | Capacitor touch screen |
| CN102063951A (en) * | 2010-11-05 | 2011-05-18 | 苏州苏大维格光电科技股份有限公司 | Transparent conductive film and manufacturing method thereof |
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