Antireflection cover plate and preparation method thereof

Abstract

The invention discloses an antireflection cover plate and a preparation method thereof. The method comprises the following steps: S1, providing a substrate; and S2, preparing an antireflection layer on the substrate, wherein the antireflection layer comprises a plurality of high-refractive-index metal oxide layers and a plurality of low-refractive-index metal oxide layers which are alternately stacked. The preparation method of the high-refractive-index metal oxide layers and the low-refractive-index metal oxide layers comprises the following steps: (1) preparing a metal thin film by adoptingmagnetron sputtering; and (2) conducting inductively coupled plasma ionization on the metal thin film in an oxygen environment to form the metal oxide layers, wherein the ICP power is 1-4000 W and theoxygen flow is 50-500 sccm. The core of the method is characterized in that the metal thin film is prepared firstly, then an ion source is used for ionization to form the metal oxide layers, meanwhile, by controlling the ICP power and the oxygen flow, the extinction coefficient of the metal oxide layers is increased, the transmittance of the cover plate is reduced while the reflection effect is achieved, the shielding effect is achieved on the appearance defects of the cover plate, and the yield is improved.

Description

technical field [0001] The invention relates to the technical field of electronic product accessories, in particular to an anti-reflection cover plate and a preparation method thereof. Background technique [0002] With the continuous improvement of people's living standards, electronic products such as mobile phones, tablet computers, cameras, and notebook computers have gradually become popular. In the prior art, the above-mentioned electronic products generally include a cover plate for protecting the body of the electronic product or enhancing the appearance of the electronic product. [0003] In life, the glare caused by the reflection of strong outdoor light on the lens and other surfaces seriously interferes with the normal visual effect, and it is easy to cause eye discomfort and eye fatigue; for example, when we operate computers or mobile phones and some outdoor display devices, we often Because of the reflection of the scenery outside the display on the surface o...

AI Technical Summary

Problems solved by technology

However, the existing anti-reflection cover plate often increases the transmittance while reducing the reflectivity, which enlarges some appearance defects on the surface of the cover plate, making it easier to be observed by human eyes, so that the appearance defect increases, and the appearance Lower yield rate and higher product cost