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Cover plate glass and preparation method thereof

A cover glass and glass substrate technology, applied in chemical instruments and methods, glass/slag layered products, layered products, etc., can solve the problems of poor light transmittance of cover glass and achieve high light transmittance

Active Publication Date: 2015-05-13
ANHUI JINGZHUO OPTICAL DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the light transmittance of the current cover glass is poor

Method used

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  • Cover plate glass and preparation method thereof
  • Cover plate glass and preparation method thereof
  • Cover plate glass and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] Please also see image 3 , the preparation method of the cover glass 100 of an embodiment, comprises the following steps:

[0033] Step S10 , performing pretreatment on the glass substrate 110 .

[0034] Specifically, in this embodiment, the pretreatment is to sequentially perform chemical cleaning, ultrasonic cleaning, and water cleaning on the glass substrate 110 , and then dry the glass substrate 110 for later use.

[0035] The thickness of the glass substrate 110 is 0.3mm˜1.0mm. Preferably, the glass substrate 110 is made of aluminosilicate glass with a thickness of 0.5 mm. The refractive index of the glass substrate 110 is preferably 1.51.

[0036]It should be noted that when the surface of the glass substrate 110 is relatively clean, no cleaning is required, and step S10 can be omitted at this time.

[0037] Step S20 , preparing the refractive index adjustment layer 130 on the surface of the glass substrate 110 by magnetron sputtering.

[0038] The refractive...

Embodiment 1

[0051] The structure of the cover glass of Example 1 is glass substrate / SiO 2 (30nm) / Si 3 N 4 (10nm) / SiO 2 (30nm) / Si 3 N 4 (40nm). Wherein, " / " represents a stacked structure, and the values ​​in brackets represent thicknesses, which are the same in the following embodiments.

[0052] The material of the glass substrate in Example 1 is aluminosilicate glass with a thickness of 1.0 mm.

[0053] The cover glass of Example 1 was tested for light with a wavelength range of 380-780 nm by using a test instrument Lambda750 spectrometer, and the test result showed that the transmittance of visible light was 90%.

[0054] The cover glass of Example 1 passed the steel wool (steel wool) test. The steel wool was added with 1 kg, and the wear-resistant surface of the cover glass was repeatedly rubbed with steel wool for 3,000 times. The haze of the cover glass of Example 1 before and after rubbing The value difference is 0.5%.

Embodiment 2

[0056] The structure of the cover glass of Example 2 is glass substrate / SiO 2 (20nm) / Si 3 N 4 (20nm) / SiO2 2 (20nm) / Si 3 N 4 (30nm). Wherein, " / " represents a stacked structure, and the values ​​in brackets represent thicknesses, which are the same in the following embodiments.

[0057] The material of the glass substrate in Example 2 is aluminosilicate glass with a thickness of 0.7 mm.

[0058] The cover glass of Example 2 was tested for light with a wavelength range of 380-780 nm by using a test instrument Lambda750 spectrometer, and the test result showed that the transmittance of visible light was 90.5%.

[0059] The cover glass of Example 2 passed the steel wool (steel wool) test. The steel wool was added with 1 kg, and the wear-resistant surface of the cover glass was repeatedly rubbed with steel wool for 3000 times. The haze of the cover glass of Example 2 before and after rubbing The value difference is 0.3%.

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Abstract

The invention relates to cover plate glass. The cover plate glass comprises a glass substrate, a refractive index adjusting layer and a wearing layer which are overlapped in sequence, wherein the refractive index adjusting layer comprises a first low refractive index transparent optical film, a high refractive index transparent optical film and a second low refractive index transparent optical film; the first low refractive index transparent optical film is arranged on the surface of the glass substrate; the high refractive index transparent optical film is arranged on the surface, far away from one side of the glass substrate, of the first low refractive index transparent optical film; the second low refractive index transparent optical film is arranged on the surface of the wearing layer and positioned between the wearing layer and the high refractive index transparent optical film; the refractive indexes of the first and second low refractive index transparent optical films are 1.38-1.6; the refractive index of the high refractive index transparent optical film is 1.6-2.4; the wearing layer is a transparent optical film of which the refractive index is greater than those of the first and second low refractive index transparent optical films. The cover plate glass is high in light transmittance. The invention also provides a preparation method of the cover plate glass.

Description

technical field [0001] The invention relates to the field of electronic devices, in particular to a glass cover plate and a preparation method thereof. Background technique [0002] Touch panels are widely used in electronic devices such as smart phones and tablet computers due to their advantages such as convenient operation. The touch panel includes a cover glass. The cover glass is located on the outermost layer of the touch panel, so that it is often in contact with the user during the use of the touch panel. At the same time, as a part of the touch panel, the cover glass needs to have high light transmittance. However, the current cover glass has poor light transmittance. Contents of the invention [0003] Based on this, it is necessary to provide a cover glass with high light transmittance and a preparation method thereof. [0004] A cover glass, comprising a glass substrate, a refractive index adjustment layer and a wear-resistant layer stacked in sequence, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B17/06C03C17/34
Inventor 刘伟唐根初
Owner ANHUI JINGZHUO OPTICAL DISPLAY TECH CO LTD
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