An antistatic transparent hardened film

Abstract

The invention discloses an anti-static transparent hardening membrane which comprises a base material, a transparent hardening layer and an anti-static layer; a transparent hardening layer containing resin A and micro particles with the particle size of 0.01-1 micro meter as well as formed by solidified film forming of coating liquid is coated on the surface of the base material; an anti-static layer containing resin B and conducting particles as well as formed by solidified film forming of coating liquid is coated on the surface of the transparent hardening layer, and the thickness of the anti-static layer is 0.03-1 micro meter; and the difference between the refractive index of the transparent hardening layer and the refractive index of the anti-static layer is controlled within the range of -0.05-0.05. The anti-static transparent hardening membrane provided by the invention has the characteristics of high full-light-ray light transmissivity, shallow interference lines, superior damage resistance and the like, can effectively prevent static electricity generated by ultrahigh surface resistance of the hardening membrane, and can be widely applied to the field of screen protection.

Description

technical field [0001] The invention relates to an antistatic transparent hardened film used on a display screen. Background technique [0002] With the popularity of tablet computers and large-screen smart phones, touch screens are widely used in various fields. However, in the process of using the touch screen, since the touch screen is often operated with hands, it is easy to stain or scratch the touch screen. Therefore, a hardened film is generally attached to the surface of the screen. However, due to the surface resistance of the hardened film itself is generally 1 × 10 14 More than Ω, it is easy to accumulate charge and generate static electricity. Static electricity has a great impact on the touch screen, which affects the operation accuracy of the touch screen, and even damages the touch screen in serious cases. Therefore, anti-static treatment is generally performed on the hardened film. [0003] In the prior art, in order to prevent static electricity on the s...

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Problems solved by technology

[0004] 1. Prevent static electricity on the surface of the hardened film by adding metal oxide conductive particles to the hardened layer. However, this method needs to add a large amount of conductive particles to the hardened layer to meet the anti-static requirements. Due to the general conductive metal oxidation The substance is heavily colored and opaque, and the addition of a large number of conductive particles seriously affects the transparency of the hard coat

[0005] 2. Adopt a double-layer structure, that is, set an antistatic layer on the hard coat layer. Although this method ensures the transparency of the hardened film, the difference in the refractive index between the two coatings will cause the surface of the film to be damaged. Obvious rainbow-like interference patterns, the existence of such interference patterns will seriously affect the visual effect of the product and affect the application of the product

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