CN203812227U - Chromatic aberration-free touch screen - Google Patents

Abstract

The utility model discloses a chromatic aberration-free touch screen orderly formed by substrate glass, an ITO layer and a protective layer. A high refractive index membrane and a low refractive index membrane are arranged between the ITO layer and the protective layer; and the low refractive index membrane is arranged between the high refractive index membrane and the ITO layer. With the high and low refractive index membranes plated under the ITO layer and together with an optical means, color of the ITO membrane can be fully eliminated and ITO patterns can be removed, so product displaying effect can be improved.

Description

A kind of no color differnece touch-screen

Technical field

The utility model relates to the low resistance touch-screen that a kind of aberration is little.

Background technology

Low resistance touch-screen quality is limited by ITO(indium tin oxide transparent conductive semiconductor film) color of glass.Along with the reduction of surface resistance, ITO thickness increases gradually, and film starts to present different film looks, and visible light transmissivity changes along with the variation of film color, and such variation can have influence on the visual experience of touch-screen product.And along with scientific and technological fast development, it is more and more higher that people require the visual experience of product, because low resistance ITO rete is thicker, color is comparatively obvious, and therefore, the pattern after etching is very clear, has a strong impact on appearance requirement standard.

For the problems referred to above, in order to meet customer need, improving product display effect, at present, for small touch screen, adopt the method that reduces gap to reduce the visibility in electrode and gap, but this method is poor to low resistance and large-sized effect screen, and be subject to device-restrictive, cost is higher, fraction defective is also very high.For giant-screen touch-screen, by dwindling the width in gap, again OCA optical cement (having the extraordinary double faced adhesive tape of optically transparent one deck) is sticked on cover plate cover glass, its structure as shown in Figure 1, by height, the stack of low refractive index dielectric membrane material thickness produces certain optical interference characteristic, realize the effect of eliminating ITO pattern, but because low resistance product I TO film color is obvious, ITO part aberration is very obvious with removing, the luminance factor of its low resistance ITO area of the pattern and gap area more as shown in Figure 2, therefore, require very high to gap width, this also causes product fraction defective always high.

Utility model content

The utility model will solve in current industry technology and to utilize the gap dwindling between pattern to reduce visual difference and can not effectively eliminate the technical matters of the aberration effect of ITO pattern.

To achieve these goals; the technical solution adopted in the utility model is: a kind of no color differnece touch-screen; formed by base plate glass, ITO figure layer, protective seam successively; between described ITO figure layer and base plate glass, be provided with high refractive index film and low refractive index film, described low refractive index film is between high refractive index film and ITO figure layer.

Described high refractive index film is titania or niobium pentaoxide.

Described titania thickness is 80 ± 10 dusts, and described niobium pentaoxide thickness is 95 ± 10 dusts.

Described low refractive index film is silicon dioxide.

Described low-refraction film thickness is 350 ± 50 dusts.

Described ITO figure layer thickness is more than 1000 dusts.

Described substrate glass thickness is 0.4-2.0mm.

The utility model has the advantage of the rete by plate respectively high and low refractive index under ITO rete, utilize optical instrument, fundamentally eliminate the color of ITO film, as shown in Figure 4, reach the effect of eliminating ITO pattern, thereby effectively promoted product display effect.

Brief description of the drawings

Below the mark in content and figure that in the utility model instructions, every width accompanying drawing is expressed is briefly described:

Fig. 1 is the no color differnece touch-screen of producing at present;

Fig. 2 is the no color differnece touch-screen ITO area of the pattern of production at present and the reflectance curve figure of gap area;

Fig. 3 is this patent no color differnece touch screen structure;

Fig. 4 is the reflectance curve figure of this patent no color differnece touch screen structure ITO area of the pattern and gap area;

Mark in above-mentioned figure is: 1, base plate glass; 2, restraining barrier; 3, ITO figure layer; 4, ITO pattern interval; 5, laminating optical cement; 6, protective seam; 7, high refractive index film; 8, low refractive index film.

Embodiment

Known referring to Fig. 3; no color differnece touch-screen is made up of base plate glass 1, high refractive index film 7, low refractive index film 8, ITO figure layer 3 and protective seam 6 successively; thickness stack by high and low refractive index deielectric-coating material and different λ/4 multiple produces certain optical interference characteristic, offsets the color of ITO rete.

Specifically, high refractive index film 7 can adopt titania or niobium pentaoxide, when wherein titania is as high refractive index film 7, thickness is 80 ± 10 dusts, preferably 80 dusts, niobium pentaoxide during as high refractive index film 7 thickness be 95 ± 10 dusts, preferably 90 dusts, low refractive index film 8 adopts silicon dioxide, its thickness is 350 ± 50, preferably 350 dusts.The thickness of ITO figure layer 3 is more than 1000 dusts, and the thickness of base plate glass 1 is 0.4-2.0mm, can realize the no color differnece of ITO pattern by said structure, as shown in Figure 4, effectively promotes display effect.

Above-mentioned no color differnece touch-screen production technology is carried out according to following steps:

Base plate glass 1 adopts floating process processing, and thickness is 0.4-2.0mm;

Adopt vacuum magnetic-control sputtering method to be coated with successively high refractive index film 7, low refractive index film 8 and ITO layer at base plate glass 1 float glass process face;

ITO layer is made to ITO figure layer 3, mainly adopt the photoetching of touch-screen gold-tinted or silk-screen technology;

On ITO figure layer 3, make one deck OC protective seam 6.

By reference to the accompanying drawings the utility model is exemplarily described above; obviously the utility model specific implementation is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technical scheme carry out; or without improving, design of the present utility model and technical scheme are directly applied to other occasion, all within protection domain of the present utility model.

Claims (3)

1. a no color differnece touch-screen, formed by base plate glass (1), ITO figure layer (3), protective seam (6) successively, it is characterized in that: between described ITO figure layer (3) and base plate glass (1), be provided with high refractive index film (7) and low refractive index film (8), described low refractive index film (8) is positioned between high refractive index film (7) and ITO figure layer (3);

Described high refractive index film (7) is titania or niobium pentaoxide;

?described titania thickness is 80 ± 10 dusts, and described niobium pentaoxide thickness is 95 ± 10 dusts;

Described low refractive index film (8) is silicon dioxide;

Described low refractive index film (8) thickness is 350 ± 50 dusts.

2. no color differnece touch-screen according to claim 1, is characterized in that: described ITO figure layer (3) thickness is more than 1000 dusts.

3. no color differnece touch-screen according to claim 1 and 2, is characterized in that: described base plate glass (1) thickness is 0.4-2.0mm.