Shadow-eliminating and anti-reflection electric conduction film coating layer

Abstract

The invention discloses a shadow-eliminating and anti-reflection electric conduction film coating layer. The electric conduction film coating layer comprises a substrate layer and an electrode layer, wherein the substrate layer is composed of ordinary glass or transparent plastics, and the electrode layer is composed of an indium tin oxide (ITO) layer or a zinc aluminum oxide (ZAO) layer. The electric conduction film coating layer is characterized in that a plurality of SiO2 layers and TiO2 or Nb2O5 layers are added between the substrate layer and the electrode layer in a composite mode. The electric conduction film coating layer has the advantages that a good electric conduction performance of a conducting layer is guaranteed, simultaneously, shadow of a conducting electrode is eliminated, so that the electrode can not be observed through the ordinary glass or the transparent plastics, the visible light penetration rate is increased, and the penetration rate of the visible light through the conducting layer is increased by 20%-50%.

Description

Technical field [0001] The present invention involves a coating layer on the surface of a glass or transparent plastic, especially a type of electrophoretic layer that eliminates a shadow and transparent. Background technique [0002] It is a type N-type oxide semiconductor-oxidation tin. ITO film is the transparent conductive film of the tin oxide semiconductor. There are usually two performance indicators: resistivity and light transmission. [0003] In the oxide conductive membrane, the highest passage of the IN2O3 (ITO) membrane with SN is the best and the conductive performance is the best, and it is easy to etch a slight graphic in the acid liquid, where the light transmittance is more than 90%.The light transmittance and resistance in ITO are controlled by the ratio of IN2O3 to SNO2, respectively, usually SNO2: In2O3 = 1: 9. [0004] In the ZNO system, AL obtains ZNO: AL transparent conductive film, that is, AZO film, which has greatly improved the film conductive performa...

AI Technical Summary

Problems solved by technology

[0005] Capacitive touch screens use transparent conductive film electrodes (such as ITO or AZO), which are applied to the display area. Due to the refractive index of the conductive film and the substrate (glass or The difference in refractive index (such as ITO and AZO has a refractive index of about 2.0, glass is about 1.5, and plastics such as PET is about 1.5), which makes the reflection and transmittance between the electrodes and the electrode gaps in the display area. Big difference, as shown in the attached picture Figure 3 is a conventional practice Transparent conductive film electrode (ITO or AZO), Figure 4Schematic diagram of the electrode made for conventional practice (ITO thickness is 40NM), the reflectance of the electrode to visible light is the reflectance of the electrode coating (ITO or AZO), and the reflectance of the electrode gap is the reflectance of glass or transparent plastic, the electrode The average reflectance of the coating (ITO or AZO) is 16.5%, and the average reflectance of glass or transparent plastic is 4.2%. The huge difference in reflectivity will make the electrodes and gaps clearly visible, affecting the effect and appearance of the display, especially in mobile phones , tablets, notebooks and ordinary computers, visible electrodes and gaps will seriously affect the visual effect

[0006] At present, the method of reducing the gap is used on the small screen touch screen to reduce the visibility of electrodes and gaps, but limited by lithography equipment, etc., if the size is more than 20 inches The screen touch screen adopts the method of tiny gaps, the equipment investment and manufacturing costs will be very high, and the product defect rate will also increase

For example, the average reflectance of the ITO or AZO conductive coating layer with a sheet resistance of 60 ohms is about 16.5%, which seriously reduces the transmission rate of visible light. In this way, the screen will be damaged in brightly lit environments, especially those with windows and lights behind. Should reflect too much light to see clearly

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