Environment-friendly sapphire film deplating solution and using method thereof

A deplating solution and sapphire technology, applied in the chemical industry, can solve the problems of incomplete deplating, deplating solution failure, substrate scrapping, etc., achieve strong permeability and complexation effect, save processing time, and deplating short time effect

Inactive Publication Date: 2015-10-28
深圳市海风润滑技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] 1) Rework grinding method: increase the regrinding procedure and prolong the processing time. In addition, grinding and polishing will change the size of the sapphire substrate and cause the substrate to be scrapped;
[0011] 2) Alkali cooking method: pollutes the environment, incomplete deplating, dangerous operation;
[0012] 3) Acidic deplating solution: oxides in it will decompose during use, which will make the deplating solution invalid. In addition, the decomposed and volatilized gas will pollute the environment. In terms of acidity, it will also cause slight pitting corrosion on sapphire. , can not completely solve the problem of deplating

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Dissolve 150g of sodium hydroxide, 50g of sodium ethylenediaminetetraacetate, and 100g of sodium phosphate in 700mL of deionized water, stir to dissolve completely, set the volume to 1L, and cool for later use.

[0040] Fully immerse the sapphire lens with AR film and AF film in the obtained deplating solution, heat to 100°C and soak for 25 minutes: the AF film can be completely removed in 10 minutes, and the AR film can be completely removed in 20 minutes. Rate ≥ 10MΩ·cm, the same below) After ultrasonic cleaning for 5 minutes, dry at 100°C for 5 minutes. After the dried sapphire lens is tested by SEM, it can be seen that there is no corrosion to the sapphire surface, no residue on the surface film, and no effect on the size of the sapphire lens.

Embodiment 2

[0042] Dissolve 160g of potassium hydroxide, 40g of potassium edetate, and 200g of borax in 600mL of deionized water, stir to dissolve completely, set the volume to 1L, and cool for later use.

[0043] Fully immerse the sapphire lens with AR film and AF film in the obtained deplating solution, soak at 100°C for 20 minutes: the AF film layer can be completely removed in 6 minutes, the AR film layer can be completely removed in 15 minutes, and cleaned by pure water ultrasonic cleaning for 8 minutes Afterwards, dry at 100°C for 6 minutes. After the dried sapphire lens is tested by SEM, it can be seen that there is no corrosion to the sapphire surface, no residue on the surface film, and no effect on the size of the sapphire lens.

Embodiment 3

[0045] Dissolve 150g of sodium hydroxide, 15g of sodium gluconate, 45g of sodium ethylenediaminetetraacetate, and 100g of sodium phosphate in 700mL of deionized water, stir to dissolve completely, set the volume to 1L, and cool for later use.

[0046] Fully immerse the sapphire lens with AR film and AF film in the obtained deplating solution, heat to 100°C and soak for 25 minutes: the AF film layer can be completely removed in 15 minutes, and the AR film layer can be completely removed in 25 minutes. Clean it with pure water ultrasonic After 10 minutes, dry at 120°C for 3 minutes. After the dried sapphire lens is tested by SEM, it can be seen that there is no corrosion to the sapphire surface, no residue on the surface film, and no effect on the size of the sapphire lens.

[0047] In summary, the environment-friendly sapphire film deplating solution of the present invention is simple to prepare, has good deplating effect, simple use method, convenient follow-up treatment, non-...

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Abstract

The invention provides an environment-friendly sapphire film deplating solution and a using method thereof. The deplating solution is a water solution containing alkali compounds, inorganic auxiliary agents and water stabilizer. Compared with the prior art, the environment-friendly sapphire film deplating solution and the using method have the advantages that the inorganic auxiliary agents have high permeability and complexing effect on a film, the deplating ability of a product is made to be higher and more thorough, and a very good deplating effect can be achieved just by conducting soaking or spray contact; deplating is even, the size of a sapphire wafer is not affected, and point corrosion cannot be caused on a workpiece; the depalting time is short, machining time is saved, the depalting solution is easy to process after being used, and no influences are caused to the environment.

Description

technical field [0001] The invention relates to the technical field of chemical engineering, in particular to an environment-friendly sapphire film deplating solution and a method for using the same. Background technique [0002] With the wide application of sapphire lenses in watch, mobile phone, military industry and other industries, coating AR film and AF film on the surface of sapphire lens to enhance its application performance has become one of the important means in sapphire processing. [0003] AR film, the main components are magnesium fluoride, silicon dioxide, etc., that is, anti-reflection film or anti-reflection film, which can enhance the light transmittance of the lens; AF film is anti-fingerprint film, coated with this film on the lens can reduce fingerprint residue and fingerprints. Easy to wipe clean. These two films will make the sapphire lens more beautiful, more wear-resistant and more transparent, thus becoming one of the essential sections in the app...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B33/08
Inventor 张永生董晓东
Owner 深圳市海风润滑技术有限公司
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