Preparation method of touch screen and touch screen structure

Abstract

The invention discloses a preparation method of a touch screen and a touch screen structure, and the preparation method comprises the following steps: carrying out optimization treatment on a tin surface of cover plate glass to remove residual impurities and flaws on the surface of the glass, and forming a plurality of uniformly distributed fine pits on the tin surface; performing antibacterial treatment on the cover plate glass so as to form an antibacterial surface with silver ions on the cover plate glass; covering a bonding layer on the processed tin surface, so that the optical resin material of the bonding layer is filled into the fine pits on the tin surface, and the relative refractive index between the bonding layer and the cover plate glass is between 1.04 and 0.96; and providing a touch sensor, and sequentially and closely connecting and overlapping the cover plate glass, the joint layer and the touch sensor to form the touch screen structure with high light transmittance and antibacterial effect.

Description

technical field [0001] The invention relates to the field of touch screens, in particular to a preparation method and a touch screen structure for making a touch screen with high light transmittance and antibacterial effect by using float glass. Background technique [0002] Float glass has the advantage of being cheap, but it has few applications in optical glass; as we know, float glass adopts the method of tin bath forming, and the surface where the glass contacts the tin surface, that is, the glass substrate The tin surface of the glass is easy to form defects such as tin dip, rainbow, spots or small ripples on the tin surface after the glass is formed. When this type of glass product is to be used as an optical glass for touch screens, it is necessary to The surface is optimized, for example, mechanical polishing or wet etching is used to improve the defects of the tin surface. Among them, mechanical polishing methods are used to improve tin surface defects. For exampl...

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Problems solved by technology

[0002] Float glass has the advantage of being cheap, but it is rarely used in the field of optical glass; The tin surface of the tin surface, after the glass is formed, the stannous oxide (SnO) on the tin surface is easy to form defects such as tin staining, rainbows, spots or small ripples. Optimize the tin surface, for example: use mechanical polishing (Mechanical polishing) or wet etching to improve the defects of the tin surface

Among them, mechanical polishing is used to improve tin surface defects, such as the glass surface grinding and stripping device of Chinese Patent Application Publication No. CN109926914A. The length and width of the area are mostly limited to less than 15 inches, which is not applicable to the large-size panels that are widely used in public places, causing troubles in application

In addition, the wet etching method has the advantages of high production efficiency, low technical difficulty and low processing cost, so it has been widely used at present. After wet etching, the glass surface will be roughened to form a glass with haze. The surface with haze will cause the light passing through the glass plate to diffuse (diffuse reflection) to achieve anti-glare and anti-reflection effects, but it will also reduce the light transmittance of the glass plate. Generally, the higher the haze of the glass surface , the more the light transmittance is reduced; if this kind of glass plate with tin surface is treated by wet etching, if it is used as a laminated component of a touch screen, it will reduce the light transmittance of the overall touch screen. Therefore, to overcome this problem is The goal of working together for the industry

[0003] In addition, if float glass is used as an antibacterial glass substrate, usually a considerable degree of discoloration (golden yellow) will occur after silver ion antibacterial treatment, because the tin component is on the surface of the glass substrate on the tin side. Diffusion in the glass, if a silver ion diffusion layer is formed in the surface, the silver in the silver ion diffusion layer will be reduced to silver colloid due to the tin component, causing the glass to be colored; the experimental results show that if the glass is due to the silver colloid When coloring, the absorption wavelength in the wavelength range of hundreds of nanometers near 428nm will become very large, so that the light transmittance of the glass plate will also be affected. As a result, it is difficult for the relatively cheap float glass to expand in antibacterial Glass Applications

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