CN103294314A - Capacitive touch screen with light polarization function - Google Patents
Capacitive touch screen with light polarization function Download PDFInfo
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- CN103294314A CN103294314A CN201310184069XA CN201310184069A CN103294314A CN 103294314 A CN103294314 A CN 103294314A CN 201310184069X A CN201310184069X A CN 201310184069XA CN 201310184069 A CN201310184069 A CN 201310184069A CN 103294314 A CN103294314 A CN 103294314A
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Abstract
The invention relates to a capacitive touch screen with a light polarization function. The capacitive touch screen comprises a transparent substrate and a sensing layer arranged on the inner side of the transparent substrate, and the sensing layer comprises at least one circuit support layer and sensing circuits arranged on the circuit support layers. The capacitive touch screen is characterized by further comprising a light polarization layer arranged between the transparent substrate and the sensing layer, two sides of the light polarization layer are glued with the inner side of the transparent substrate and the outer side of the sensing layer respectively via bonding layers, the circuit support layers are made of zero-birefraction plastic films, a plurality of grooves staggering into a net are formed on at least one side of each circuit support layer, tiny conductive particles are filled in the grooves and are mutually connected to form net-shaped fine conductive lines, and the net-shaped fine conductive lines form the sensing circuits. Since the plastic poor in heat resistance and with a zero-birefraction character can be selected as the circuit support layers, a light polarization state of polarized light generated by the light polarization layer is guaranteed not to be affected, normal displaying of images is guaranteed, and the capacitive touch screen is simple in manufacturing process and low in manufacturing cost.
Description
Technical field
The present invention relates to a kind of capacitance touch screen, relate in particular to a kind of capacitance touch screen with polarisation function.
Background technology
The advantage that projection-type capacitive touch screen has is highly sensitive, can realize multiple point touching has been widely used on the multiple consumer electronics products such as mobile phone, panel computer.At present, projection-type capacitive touch screen has multiple structures such as single-glass, double glazing, adhesive film type, wherein, the capacitance touch screen of adhesive film type structure is general to be coated on the vacuum deposition process of transparent oxide conducting film (as tin indium oxide) by high temperature on resistant to elevated temperatures PET (Polyethylene terephthalate) overlay earlier, again it is patterned into for the sensor circuit (comprising induction electrode and perimeter circuit) of realizing the capacitance touch inducing function, this PET plastic foil is attached on the transparency carrier forms capacitance touch screen at last.The manufacturing process of the capacitance touch screen of this adhesive film type is simple, is one of the most practical a kind of structure.
When the transparent oxide conducting film is coated on the plastic foil, because the transparent oxide conducting film generally has higher refractive index (n ≈ 1.9), exist bigger refringence between itself and the plastic layer (n ≈ 1.5), make the induction electrode of this adhesive film type capacitance touch screen exist stronger reflected light, in addition, when capacitance touch screen is arranged on display the place ahead, each faces such as capacitance touch screen inside surface, display outside surface also exist certain reflected light, and these reflected light all can reduce the readability of electronic product under the high light environment to a certain extent.
In the prior art, someone proposes above-mentioned reflected light is reduced in the preposition the place ahead to capacitance touch screen of the polarizing layer of flat-panel monitor, yet, capacitance touch screen for the adhesive film type structure, because resistant to elevated temperatures hyaline membrane materials such as PET all are easy to produce uncontrollable non-zero birefringence, the polarized condition that can cause polarized light changes and has influence on the normal demonstration of flat-panel monitor picture, therefore is difficult to adopt the method for this preposition polarizing layer to reach and eliminates catoptrical purpose.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of capacitance touch screen with polarisation function, this capacitance touch screen with polarisation function readable better under the high light environment, and can guarantee the normal demonstration of picture.The technical scheme that adopts is as follows:
A kind of capacitance touch screen with polarisation function, the inductive layer that comprises transparency carrier and be arranged on the transparency carrier inboard, inductive layer comprises the circuit supporting layer of at least one flexible and transparent and is arranged on sensor circuit on the circuit supporting layer, it is characterized by: also comprise polarizing layer, polarizing layer is arranged between transparency carrier and the inductive layer, and the two sides of polarizing layer fit by the medial surface of bonding coat and transparency carrier, the lateral surface of inductive layer respectively; Described circuit supporting layer is the plastic foil of zero birefraction, and the one side at least of circuit supporting layer is provided with many grooves, many interlaced the reticulating of groove; Be filled with trickle conductive particle in the groove, the conductive particle company of knot mutually forms netted conduction fine rule, and netted conduction fine rule constitutes described sensor circuit.
The above-mentioned outside, inboard are for the operator, are the outside near operator's a side, be the inboard away from operator's a side.
Capacitance touch screen with polarisation function of the present invention, position relation from polarizing layer, the structure of inductive layer, material, process conditions (as temperature etc.) many-side is started with, structure to capacitance touch screen is comprehensively arranged, solve readable on the whole, the normal demonstration, manufacturing process, problems such as manufacturing cost: by polarizing layer is separated from display unit main body, and be attached between the transparency carrier and inductive layer of capacitance touch screen, realize the preposition of polarizing layer, sponge most of reflected light from conduction fine rule and each face, to reach the purpose that improves electronic product readability under the high light environment; Because sensor circuit is made of netted conduction fine rule, rather than is formed by the transparent oxide conducting film, thereby do not have the electrode reflected light that is produced by the transparent oxide conducting film, the readability under the high light is better; Owing to do not contain the oxidic transparent conducting film that needs the high-temperature technology deposition; thereby do not need to select resistant to elevated temperatures plastic foil as the circuit supporting layer; and can select multiple thermotolerance relatively poor; have the plastics of zero birefraction characteristic as the circuit supporting layer; for example; can select optical property and economy all very desirable; but not good TAC (cellulose triacetate) film of thermotolerance is as the circuit supporting layer; this material generally has the characteristic of zero birefraction; the polarized condition that guarantees the polarized light that polarizing layer is produced is unaffected; guarantee the normal demonstration of picture, and manufacturing process is simpler; manufacturing cost is lower.Carry out in addition, the sensor circuit that this conduction fine rule constitutes can be regulated the sectional area of conduction fine rule by the degree of depth of groove, thereby improve the electric conductivity of conduction fine rule, this mode generally can not cause conducting electricity the increase of fine rule reflective surface area, thereby, by the degree of depth, width and the mesh-density that reasonably designs groove, can further reduce the reflection of conduction fine rule, make that the readability of touch control display under the high light environment is higher.
In a kind of concrete scheme of the present invention, described inductive layer comprises one deck circuit supporting layer, and described sensor circuit is arranged on a side of circuit supporting layer.Sensor circuit can be arranged on the outside or the inboard of circuit supporting layer, thus have rete still less, the advantage of lower, the easier enforcement of reflectivity, sensor circuit can adopt various single-layer electrodes designs commonly used in the capacitance touching control technology.
In the concrete scheme of another kind of the present invention, described inductive layer comprises bonding two-tier circuit supporting layer mutually, and described sensor circuit branch is located on the two-tier circuit supporting layer.Two-layer sensor circuit is separately positioned on the two-layer supporting layer, more two-layer supporting layer is glued together, thereby can adopt the two-layer electrode design that has more induction points in the capacitance touching control technology.
In another concrete scheme of the present invention, described inductive layer comprises one deck 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, and sensor circuit can be adopted outside the two-layer electrode design of more induction points, also make rete still less, reflectivity is lower.
Polarizing layer generally has the structure of inside and outside two-layer supporting layer clamping one deck light polarizing film, for make that one-piece construction is simple more, rete still less, as preferred version of the present invention, described polarizing layer only comprises outer polarisation supporting layer and light polarizing film, describedly is in outermost circuit supporting layer and fits as the interior polarisation supporting layer of polarizing layer and the medial surface of light polarizing film.Owing to will be in outermost circuit supporting layer simultaneously also as the interior polarisation supporting layer of polarizing layer, thereby save one deck supporting layer of polarizing layer, make whole rete still less, structure is simpler.
Above-mentioned sensor circuit can be connected with outside the realization by certain extension line structure, for example, can adopt certain FPC(flexible PCB) external connection, be connected on the sensor circuit by anisotropy conductiving glue, realize sensor circuit and outside being connected, in order to make one-piece construction simpler, as preferred version of the present invention, described circuit supporting layer is provided with outward extending lead division, and lead division is provided with the line end of drawing of sensor circuit.By lead division is set, draw line end lead division setting, can save the extension line structure that arranges in addition into inductive layer, one-piece construction is simpler.
Between above-mentioned polarizing layer and the inductive layer, between the circuit supporting layer, between inductive layer and the transparency carrier or between touch-screen and flat-panel monitor, can select for use the jointing material of acryl resin, optical lens gelatin any zero birefractions such as (OCA glue) bonding mutually.
Description of drawings
Fig. 1 is the vertical view of the embodiment of the invention one;
Fig. 2 is the layer structure synoptic diagram of the embodiment of the invention one;
Fig. 3 is the inductive layer structural representation of the embodiment of the invention one;
Fig. 4 is that Fig. 3 is along the sectional view of A-A;
Fig. 5 is the layer structure synoptic diagram of the embodiment of the invention two;
Fig. 6 is the vertical view of the embodiment of the invention two;
Fig. 7 is the synoptic diagram of two-layer sensor circuit among Fig. 6;
Fig. 8 is the layer structure synoptic diagram of the embodiment of the invention three.
Embodiment
Be described further below in conjunction with accompanying drawing and preferred implementation of the present invention.
Embodiment one
As depicted in figs. 1 and 2, this capacitance touch screen with polarisation function adopts the single-layer electrodes design, and comprise transparency carrier 1, be arranged on inductive layer 2, the polarizing layer 3 of transparency carrier 1 inboard, and the coverage layer 4 that inductive layer 2 peripheries are set; As shown in Figure 2, inductive layer 2 comprises the circuit supporting layer 201 of one deck flexible and transparent and is arranged on sensor circuit 202 on the circuit supporting layer 201; Polarizing layer 3 is arranged between transparency carrier 1 and the 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 many grooves 5, many groove 5 interlaced reticulating; Being filled with nano-sized carbon, nm of gold, the nano-Ag particles that trickle conductive particle 6(for example can select for use particle diameter to be about 20～100nm in the groove 5 is filled in the groove 5), conductive particle 6 even forms netted conduction fine rule 7 by certain mutual knot of branch that is bonded into, and netted conduction fine rule 7 constitutes sensor circuits 202.
Polarizing layer 3 only comprises outer polarisation supporting layer 301 and light polarizing film 302, and circuit supporting layer 201 fits as the interior polarisation supporting layer of polarizing layer 3 and the medial surface of light polarizing film 302.
Shown in Fig. 3,4, in a kind of embodiment of present embodiment, the thickness of circuit supporting layer 201 is about 50 μ m, the width of groove 5, the degree of depth all are about 5 μ m, the conduction fine rule 7 at sensor circuit 202 places is designed to the irregular hexagon net of about 100 μ m at interval, irregular hexagon net can avoid induction electrode the colour reflective effect of similar grating to occur, perimeter circuit 10 is designed to the square net of about 10 μ m at interval, adopt square net, can be so that conductor length to be shorter, resistance is lower.
Fit by bonding coat 11 between the lateral surface of the polarisation supporting layer 301 of above-mentioned polarizing layer 3 and the lateral surface inductive layer 2 of transparency carrier 1, fit by bonding coat 11 between circuit supporting layer 201 and the polarizing layer 3, bonding coat 11 can be selected the jointing material of acryl resin, optical lens gelatin any zero birefractions such as (OCA glue) for use.
In a kind of embodiment of present embodiment, sensor circuit 202 is connected with outside the realization by certain extension line structure, as shown in Figure 2, adopts FPC external connection 12, be connected on the sensor circuit 202 by anisotropy conductiving glue 13, realize sensor circuit 202 and outside being connected.
Embodiment two
As shown in Figure 5, in other parts all under the situation identical with embodiment one, its difference is: circuit supporting layer 201 comprises the bonding first circuit supporting layer 2011 and second circuit supporting layer 2012 mutually, sensor circuit 202 comprises first sensor circuit 2021 and second sensor circuit 2022, first sensor circuit 2021 is arranged on the first circuit supporting layer 2011, second sensor circuit 2022 is arranged on the second circuit supporting layer 2012, again with the first circuit supporting layer 2011, second circuit supporting layer 2012 is glued together, thereby can adopt the two-layer electrode design that has more induction points in the capacitance touching control technology.
As shown in Figure 6 and Figure 7, first sensor circuit 2021 on the first circuit supporting layer 2011 is designed to along the electrode of vertical bar side by side of Y-direction extension, second sensor circuit 2022 on the second circuit supporting layer 2012 is designed to along the electrode of vertical bar side by side of directions X extension, wherein, at X, the place that Y-direction vertical bar electrode is overlapping, the conduction fine rule of vertical bar electrode is designed to respectively according to X, the Y-direction trend, it is netted to make that it forms after mutually overlapping, at X, the non-overlapping place of Y-direction vertical bar electrode, X, the Y electrode all is set to independent netted, therefore, can have more consistent transmittance so that the induction electrode after overlapping all is netted everywhere.
Embodiment three
As shown in Figure 8, in other parts all under the situation identical with embodiment one, its difference is: sensor circuit 202 comprises first sensor circuit 2021 and second sensor circuit 2022, first sensor circuit 2021 and second sensor circuit 2022 are separately positioned on the both sides of circuit supporting layer 201, like this its except the two-layer electrode design that can adopt more induction points as shown in Figure 6 and Figure 7, also make rete still less, reflectivity is lower.
In addition; need to prove, the specific embodiment described in this instructions, its each several part titles etc. can be different; allly conceive equivalence or the simple change that described structure, feature and principle are done according to patent of the present invention, be included in the protection domain of patent of the present invention.Those skilled in the art can make various modifications or replenish or adopt similar mode to substitute described specific embodiment; only otherwise depart from structure of the present invention or surmount the defined scope of these claims, all should belong to protection scope of the present invention.
Claims (5)
1. capacitance touch screen with polarisation function, the inductive layer that comprises transparency carrier and be arranged on the transparency carrier inboard, inductive layer comprises the circuit supporting layer of at least one flexible and transparent and is arranged on sensor circuit on the circuit supporting layer, it is characterized by: also comprise polarizing layer, polarizing layer is arranged between transparency carrier and the inductive layer, and the two sides of polarizing layer fit by the medial surface of bonding coat and transparency carrier, the lateral surface of inductive layer respectively; Described circuit supporting layer is the plastic foil of zero birefraction, and the one side at least of circuit supporting layer is provided with many grooves, many interlaced the reticulating of groove; Be filled with trickle conductive particle in the groove, the conductive particle company of knot mutually forms netted conduction fine rule, and netted conduction fine rule constitutes described sensor circuit.
2. the capacitance touch screen with polarisation function as claimed in claim 1, it is characterized in that: described inductive layer comprises one deck circuit supporting layer, described sensor circuit is arranged on a side of circuit supporting layer.
3. the capacitance touch screen with polarisation function as claimed in claim 1 is characterized in that: described inductive layer comprises bonding two-tier circuit supporting layer mutually, and described sensor circuit branch is located on the two-tier circuit supporting layer.
4. the capacitance touch screen with polarisation function as claimed in claim 1, it is characterized in that: described inductive layer comprises one deck circuit supporting layer, and described sensor circuit is arranged on the both sides of circuit supporting layer.
5. as each described capacitance touch screen with polarisation function of claim 1～4, it is characterized in that: described polarizing layer only comprises outer polarisation supporting layer and light polarizing film, describedly is in outermost circuit supporting layer and fits as the interior polarisation supporting layer of polarizing layer and the medial surface of light polarizing film.
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 |
|---|---|---|---|
| CN201310184069.XA CN103294314B (en) | 2013-05-17 | 2013-05-17 | A kind of capacitance touch screen with polarisation function |
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| Publication Number | Publication Date |
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| CN103294314A true CN103294314A (en) | 2013-09-11 |
| CN103294314B 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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105393196A (en) * | 2014-03-28 | 2016-03-09 | 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105393196A (en) * | 2014-03-28 | 2016-03-09 | 凸版印刷株式会社 | Touch sensor electrode, touch panel, and display device |
| CN105393196B (en) * | 2014-03-28 | 2018-09-11 | Vts-触动感应器有限公司 | 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 |
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| Publication number | Publication date |
|---|---|
| CN103294314B (en) | 2016-12-07 |
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