A kind of production method of sapphire camera window

A production method and camera technology, applied in the direction of image communication, surface polishing machine tools, color TV parts, etc., can solve the problems of unreasonable process design, affecting the quality and yield of window plates, etc., and achieve the improvement of viscosity and interfacial film Properties, viscosity, and interfacial film properties are stable and the effect of high hardness

Active Publication Date: 2022-02-11
重庆新知创科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process design of this method is not reasonable enough, which will directly affect the quality and yield of the window

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The preparation process of the sapphire camera window of the present embodiment includes the following steps:

[0033] Step 1, crystal rod extraction; take the sapphire crystal of A direction, M direction or C direction, and then use the rod removal machine to remove the rod, so as to obtain the crystal rod;

[0034] Step 2, crystal cutting: use diamond wire cutting equipment to cut the ingot, so as to obtain the wafer;

[0035] Step 3, grinding; use a grinding machine to grind the wafer; when grinding, add grinding liquid, the grinding disc pressurizes the wafer to 0.022Mpa, and the speed of the grinding disc is 1200r / min; after the grinding is completed, clean it with absolute ethanol; The grinding liquid components include: 2% cubic boron nitride powder with a particle size of 20 μm, 16% alkylphenol polyoxyethylene ether, 6% glycerin, 11% polypropylene glycol 400, and the rest is deionized water;

[0036] Step 4, chamfering; use the diamond grinding wheel of the num...

Embodiment 2

[0044] The preparation process of the sapphire camera window of the present embodiment includes the following steps:

[0045] Step 1. Crystal ingot; take the sapphire crystal in A-direction, M-direction or C-direction, and then use the rod-removing machine to remove the rod, so as to obtain the crystal rod;

[0046] Step 2, crystal cutting; using diamond wire cutting equipment to cut the ingot to obtain wafers;

[0047] Step 3, grinding; use a grinding machine to grind the wafer; when grinding, add grinding liquid, the grinding disc pressurizes the wafer to 0.02Mpa, and the speed of the grinding disc is 1000r / min; after the grinding is completed, clean it with absolute ethanol; The grinding liquid components include: 0.5% cubic boron nitride powder with a particle size of 10 μm, 14% alkylphenol polyoxyethylene ether, 4% glycerin, 9% polypropylene glycol 400, and the rest is deionized water;

[0048] Step 4, chamfering; using a diamond grinding wheel of a numerically controlle...

Embodiment 3

[0056] The preparation process of the sapphire camera window of the present embodiment includes the following steps:

[0057] Step 1, crystal rod extraction; take the sapphire crystal of A direction, M direction or C direction, and then use the rod removal machine to remove the rod, so as to obtain the crystal rod;

[0058] Step 2, crystal cutting: use diamond wire cutting equipment to cut the ingot, so as to obtain the wafer;

[0059] Step 3, grinding; use a grinding machine to grind the wafer; when grinding, add grinding liquid, the grinding disc pressurizes the wafer to 0.02Mpa, and the speed of the grinding disc is 11000r / min; after the grinding is completed, clean it with absolute ethanol; The grinding liquid components include: 1% cubic boron nitride powder with a particle size of 15 μm, 15% alkylphenol polyoxyethylene ether, 5% glycerin, 10% polypropylene glycol 400, and the rest is deionized water;

[0060] Step 4, chamfering; using a diamond grinding wheel of a numer...

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Abstract

The invention relates to a production method of a sapphire camera window, and the specific steps include crystal rod removal, crystal cutting, grinding, chamfering, annealing, double-sided polishing, laser slice removal, film coating, ink coating and thermal drying, etc.; The finished camera window film has high quality, low reject rate and high production efficiency.

Description

technical field [0001] The invention relates to a production method of a sapphire sheet, in particular to a production method of a sapphire camera window sheet, and belongs to the technical field of sapphire processing. Background technique [0002] In modern life, mobile phones have become an indispensable electronic product for people, and most mobile phones have the function of taking pictures. The window covering the camera of a traditional mobile phone to protect the camera is made of glass, which has a Mohs hardness of only 7 and poor wear resistance. [0003] With the advancement of technology, glass mobile phone camera windows are gradually being replaced by sapphire materials. Sapphire has very good thermal properties, excellent electrical properties and dielectric properties, can maintain high strength at high temperatures, excellent thermal properties and transmittance, and is chemically resistant. The mobile phone camera window made of sapphire has high definit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/225B24B37/00B24B29/02B24B1/00
Inventor 苏凤坚刘俊郝正平
Owner 重庆新知创科技有限公司
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