CN203102235U

CN203102235U - Capacitive screen one glass solution (OGS) shadow eliminating structure

Info

Publication number: CN203102235U
Application number: CN 201320063210
Authority: CN
Inventors: 沈励; 许沭华; 迟晓辉; 胡里程; 夏大映
Original assignee: Wuhu Token Sciences Co Ltd
Current assignee: Wuhu Token Sciences Co Ltd
Priority date: 2013-02-04
Filing date: 2013-02-04
Publication date: 2013-07-31
Anticipated expiration: 2023-02-04

Abstract

The utility model discloses a capacitive screen one glass solution (OGS) shadow eliminating structure. One optical antireflection film layer is arranged between the upper surface of a touch screen coverage of a capacitive screen and protective glass, and one optical antireflection film layer is arranged between the lower surface of the touch screen coverage of the capacitive screen and a resin protective layer. According to the capacitive screen OGS shadow eliminating structure, the methods that an IIM and an ITO upper layer are plated under an ITO film layer, and an IIM is plated under an OC light resistance protective layer are adopted, the effect of eliminating an ITO pattern can be achieved, and high transmittance can also be achieved.

Description

The capacitance plate OGS shadow structure that disappears

Technical field

The utility model relates to the capacitive touch screen structure.

Background technology

Touch-screen is as a kind of emerging human-computer interaction device, and people use touch-screen to replace mouse and keyboard, has become input equipment the simplest at present, most convenient.When touch-screen was produced, the designer can go out to be fit to various user interface by software design, and the user does not need special operative knowledge, only need touch response position on the display screen according to icon, just can realize the operation of needs.

Under the social progress fast development, people pursue more and more higher to touch-screen.In order to satisfy ultra-thinization of intelligent terminal and to promote the display effect demand; develop OGS(One glass solution at present) structure; promptly go up the technology that directly forms ITO conducting film and sensor, make a glass play the double action of cover glass and touch sensor simultaneously at cover glass (cover plate).The OGS touch screen structure can reach have been saved one deck glass cost and has reduced the cost of once fitting, and has alleviated weight and thickness, has increased penetrability.It will be the inevitable choice of high-end brand terminal.

But OGS structure touch-screen outward appearance ITO(indium tin oxide transparent conductive semiconductor film) low in film resistance, under the situation of high thickness.Pattern is very obvious, has a strong impact on the appearance requirement standard, is embodied in especially on the low large scale touch-screen of ITO film resistance.

Structure such as Fig. 1: conventional art is the ITO-sensor(monolithic before) stick on the cover plate cover glass by OCA optical cement (transmitance 100% has the extraordinary double faced adhesive tape of optically transparent one deck), normally measure the projection light wavelength 550 times: its transmitance is: 81-86%, reflectivity 14-19%.

OGS structure commonly used at present as shown in Figure 2; employing is directly made the ITO pattern on the cover board; promptly cover glass directly adopt the vacuum magnetic-control sputtering method to be coated with the ITO film and expose, engraving method is made ITO figure layer; thereby reach effect same; but such touch-screen transmitance is than increasing on the conventional touch screen structural manufacturing process (structure such as Fig. 1); but only adapt to and be used in ITO film resistance height (75-350 ohm; low thickness) on the product; to the ITO film resistance low (0-75 ohm. high thickness) on the product; the ITO figure is obvious, influences appearance standard.

The utility model content

Technical problem to be solved in the utility model is to realize a kind of capacitance plate OGS structure of the ITO of elimination pattern.

To achieve these goals, the technical solution adopted in the utility model is: the capacitance plate OGS shadow structure that disappears, between the touch-screen figure layer upper surface and cover glass of capacitance plate, with and lower surface and resin protective layer between be equipped with one deck optical anti-reflective film.

Described optical anti-reflective film is a double-decker, is formed by stacking by layer of titanium dioxide and layer of silicon dioxide.

Described titania thickness 40-60, described silicon dioxide thickness 300-400.

Described touch-screen figure layer is provided with ITO figure layer, insulation bridge formation layer and metal by cover glass successively to the resin protective layer direction and strides the bridge conductor layer, and described touch-screen layer edges is provided with metal lead wire, and fills the black light frame at gap location.

Described cover glass thickness is 0.7-2.0mm.

The utility model OGS structure touch-screen adopts ITO rete plating IIM and ITO upper strata down, and OC photoresistance protective seam is plating IIM effect down, can high permeability, and can reach again and eliminate the ITO pattern effect.

Description of drawings

Below the content of every width of cloth accompanying drawing expression in the utility model instructions and the mark among the figure are made brief description:

Fig. 1, be conventional I TO conduction monolithic applying cover plate cross-sectional layers structural drawing;

Fig. 2 is traditional OGS structure touch-screen cross-sectional layers structural drawing;

Fig. 3 is the utility model OGS structure touch-screen cross-sectional layers structural drawing;

Mark among the above-mentioned figure is: 1, cover glass; 2, optical anti-reflective film; 3, black light frame; 4, ITO figure layer; 5, insulation bridge formation layer; 6, metal is striden the bridge conductor layer; 7, metal lead wire; 8, resin protective layer; 9, applying cover plate; 10, applying optical cement; 11, silicon dioxide layer of protection; 12, electrostatic prevention ITO.

Embodiment

Contrast accompanying drawing below, by description to embodiment, effect and principle of work, the manufacturing process of mutual alignment between the shape of embodiment of the present utility model such as related each member, structure, the each several part and annexation, each several part and manipulate method etc., be described in further detail, with help those skilled in the art to utility model of the present utility model conceive, technical scheme has more complete, accurate and deep understanding.

Referring to Fig. 3 as can be known; the utility model capacitance plate OGS(One glass solution) structure shadow (the eliminate ITO pattern) technology that disappears is exactly to increase one deck optical anti-reflective film 2(IIM on the prior art basis of Fig. 2); be the touch-screen figure layer upper surface and the cover glass 1(glass of capacitance plate) between, with and lower surface and resin protective layer 8(OC protection) between be equipped with one deck optical anti-reflective film 2.

Optical anti-reflective film 2 is the certain optical interference characteristics of thickness stack generation by high and low refractive index deielectric-coating material and different λ/4 multiples, realize the raising of transmitance, the utility model adopts 2 layers of anti-reflection film 2, and normally measure the projection light wavelength 550 times: its transmitance: the 91-95% reflectivity is: 5-9%.Optical anti-reflective film 2 compositions are magnetron sputtering titania (TiO ₂) and silicon dioxide (SiO ₂) stack, titania thickness 40-60, preferred 50; Silicon dioxide thickness 300-400, preferred 350, double-deck optical anti-reflective film (2) structure of OGS improves transmitance like this, make touch-screen can transmitance greater than 91%, can reach the shadow effect that disappears again.

Touch-screen figure layer is a conventional structure; be provided with ITO figure layer 4, the insulation layer 5(PI that build bridge by cover glass 1 successively to resin protective layer 8 directions) and metal stride bridge conductor layer 6(Metal-jumper); this touch-screen layer edges is provided with metal lead wire 7(Metal-trace); and fill black light frame 3(BM at the marginal gap place), it is visual to be used to keep out metal lead wire 7.

Capacitance plate OGS manufacturing process is carried out according to following steps:

Step 1, after cover glass 1 adopts the float glass process surface strengthening normal touch base plate glass, thickness is 0.7-2.0mm, strengthening the back stressor layers is 10-12um stress value: 550-650mpa, adopt the vacuum magnetic-control sputtering method to be coated with optical anti-reflective film 2 figure layers in such cover glass 1 one side, when being coated with optical anti-reflective film 2, need plating titanium dioxide layer earlier, applying silicon oxide layer again, stack constitutes optical anti-reflective film 2;

Step 2, make touch-screen figure layers on optical anti-reflective film 2 surface of step 1;

Specifically:

At first make black light frame 3, i.e. emulsion black film layer, the black light frame 3 main black surround printing ink that replace on applying cover-plate glass and the applying cover-plate glass on optical anti-reflective film 2 upper stratas.Here make black light frame 3, employing touch-screen gold-tinted photoetching technique, black light frame 3 is carried out successively: cleaning, coating, the soft PROCESS FOR TREATMENT of baking, exposing, developing, bake firmly, thus be made into black light frame 3;

Adopt the vacuum magnetic-control sputtering method to be coated with ITO figure layer 4 afterwards.ITO figure layer 4 adopts touch-screen gold-tinted photoetching technique to be produced on optical anti-reflective film 2 upper stratas, in the black light frame 3, ITO figure layer 4 carries out when making successively: cleaning, coating, soft roasting, exposure, develop, hard roasting, etching, stripping PROCESS FOR TREATMENT, thereby be made into ITO figure layer 4;

Make one deck insulation layer 5 of building bridge afterwards on ITO figure layer 4, the layer 5 of building bridge of insulation here also is to adopt touch-screen gold-tinted photoetching technique, promptly carries out successively: clean, coating, soft roasting, exposure, develop, hard roasting PROCESS FOR TREATMENT, being made into the insulation layer figure layer 5 of building bridge;

Adopt the vacuum magnetic-control sputtering method on layer figure layer 5 is built bridge in the insulation of making, to plate layer of metal conductive material (mo/al/mo) afterwards, be made into the metal lead wire 7 that metal is striden bridge conductor layer 6 and edge.The making that metal is striden the metal lead wire 7 at bridge conductor layer 6 and edge is to adopt touch-screen gold-tinted photoetching technique, promptly to carrying out successively: cleaning, coating, soft roasting, exposure, develop, hard roasting, etching, stripping PROCESS FOR TREATMENT, thereby be made into the metal lead wire 7 that metal is striden bridge conductor layer 6 and edge.It should be noted that, be made into metal when striding the metal lead wire 7 at bridge conductor layer 6 and edge, must generating a cover metal target, because the metal target is brighter, when carrying out next step surface coverage optical anti-reflective film 2 technologies, can avoid making the unusual phenomenon of resin protective layer 8 skew contrapositions;

So far, touch-screen figure layer completes;

Step 3, adopt the vacuum magnetic-control sputtering method to be coated with one deck optical anti-reflective film 2 figure layers once more at touch-screen figure laminar surface, the titanium dioxide layer of optical anti-reflective film 2 and silicon dioxide layer also are that layering is coated with, and are formed by stacking.This one deck optical anti-reflective film 2 that increases is this patent key points, utilize the optical anti-reflective film 2 on touch-screen figure layer two sides, build bridge pattern that layer 5 and metal stride bridge conductor layer 6 of ITO figure layer 4, insulation is clipped in the middle of the double-deck optical anti-reflective film 2, to improve transmitance, reach the purpose of the shadow pattern that disappears, when being coated with described optical anti-reflective film 2, need plating titanium dioxide layer earlier, applying silicon oxide layer again, stack constitutes optical anti-reflective film 2;

Making one deck resin protective layer 8 outside the optical anti-reflective film 2 of step 4, making in step 3 protects; here making resin protective layer 8 also is to adopt touch-screen gold-tinted photoetching technique; promptly carry out successively: cleaning, coating, soft roasting, exposure, develop, hard roasting, PROCESS FOR TREATMENT; make resin protective layer 8; owing to generate a cover metal target when metal is striden the metal lead wire 7 at bridge conductor layer 6 and edge being made into; then can avoid making the unusual phenomenon of resin protective layer 8 skew contrapositions, guarantee fabricating quality.

So far, capacitance plate OGS completes.

Claims

1. the capacitance plate OGS shadow structure that disappears is characterized in that: between the touch-screen figure layer upper surface and cover glass (1) of capacitance plate, with and lower surface and resin protective layer (8) between be equipped with one deck optical anti-reflective film (2).

2. the capacitance plate OGS according to claim 1 shadow structure that disappears, it is characterized in that: described optical anti-reflective film (2) is a double-decker, by plating layer of titanium dioxide earlier with plate layer of silicon dioxide again and be formed by stacking.

3. the capacitance plate OGS according to claim 2 shadow structure that disappears is characterized in that: described titania thickness 40-60, described silicon dioxide thickness 300-400.

4. the capacitance plate OGS according to claim 3 shadow structure that disappears; it is characterized in that: described touch-screen figure layer is provided with ITO figure layer (4), insulation bridge formation layer (5) and metal by cover glass (1) successively to resin protective layer (8) direction and strides bridge conductor layer (6); described touch-screen layer edges is provided with metal lead wire (7), and fills black light frame (3) at gap location.

5. according to the shadow structure that disappears of each described capacitance plate OGS among the claim 1-4, it is characterized in that: described cover glass (1) thickness is 0.7-2.0mm.