Replenishing liquid capable of prolonging service life of hydrogen peroxide etching liquid

A technology of hydrogen peroxide and replenishing liquid, which is applied in the field of materials for chemical etching, can solve the problems of insufficient utilization of hydrogen peroxide and other components, and achieve the goals of saving etching costs, improving service life, and saving usage Effect

Active Publication Date: 2020-12-11
武汉迪赛新材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the copper ion concentration of these etching solutions exceeds 7000ppm, if they continue to be used, they cannot maintain the required etching parameters such as qualified etching angles, so the etching solution must be replaced. In fact, the hydrogen peroxide in the etching solution is only consumed at this time. A small part, and a large amount of hydrogen peroxide and other components have not been fully utilized

Method used

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  • Replenishing liquid capable of prolonging service life of hydrogen peroxide etching liquid
  • Replenishing liquid capable of prolonging service life of hydrogen peroxide etching liquid
  • Replenishing liquid capable of prolonging service life of hydrogen peroxide etching liquid

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Embodiment Construction

[0027] Below, the applicant will describe the technical solutions and technical effects of the present invention in detail in conjunction with specific embodiments. It should be understood that the following examples are only examples, and the present invention is not limited to these examples.

[0028]The raw materials used in the following examples and comparative examples are all commercially available products with a purity of analytical grade or above, such as ultrapure water with a conductivity of <5 μS / cm.

[0029] According to the types and ratios of raw materials shown in the following table 1, a kind of replenishing liquid that can improve the service life of the hydrogen peroxide-based etching solution of Examples 1-6 and the replenishing liquid of Comparative Examples 1-8 were prepared;

[0030] The preparation method is as follows: firstly, ammonium persulfate is added into ultrapure water, stirred until it is completely dissolved, and then a chelating agent, a re...

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Abstract

The invention belongs to the technical field of materials for chemical etching of metal materials, and particularly relates to replenishing liquid capable of prolonging the service life of hydrogen peroxide etching liquid. Relative to the total weight of the whole composition, the replenishing liquid comprises the following components in percentage by weight: 4-20% of ammonium persulfate, 8-30% ofa chelating agent, 4-20% of a regulator, 2-10% of a multifunctional additive and ultrapure water for enabling the whole composition to reach 100%. After the replenishing liquid is added into the hydrogen peroxide etching liquid which is nearly invalid after continuous etching, the service life of the etching liquid can be obviously prolonged again, the purpose of reducing the use amount of the etching liquid can be achieved, the etching cost is obviously reduced, and the replenishing liquid has very high industrial popularization value.

Description

technical field [0001] The invention belongs to the technical field of materials for chemical etching of metal materials, and in particular relates to a replenishing liquid capable of improving the service life of a hydrogen peroxide-based etching liquid. Background technique [0002] The liquid crystal display includes a liquid crystal display panel and a backlight module, and the liquid crystal display panel includes a CF substrate, a TFT array substrate, and a liquid crystal material between the CF substrate and the TFT substrate. By supplying power to the TFT substrate or not, the direction of the liquid crystal molecules is controlled, and the light from the backlight module is projected onto the CF substrate to generate a picture. [0003] The liquid crystal panel is the heart of the liquid crystal display, accounting for more than 80% of the cost of the entire product, and its quality will directly affect the display's color, brightness, contrast, viewing angle and ot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F1/46C23F1/18C23F1/26
CPCC23F1/46C23F1/18C23F1/26
Inventor 邹玲詹洪郭文勇罗晓锋陆飚
Owner 武汉迪赛新材料有限公司
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