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A kind of blackening liquid and its preparation method and use method

A blackening liquid and blackening technology, applied in the field of blackening liquid, can solve the problems of long blackening time, further improvement of blackening effect and high blackening temperature, achieving complete copper grid lines, stable blackening effect, Even blackening effect

Active Publication Date: 2021-03-26
GUANGDONG SKYCHEM TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the blackening temperature of the blackening potion of this invention is 50-80 ℃, and the blackening time is 5-20min, so its blackening temperature is high, the blackening time is long, and the blackening effect needs to be further improved

Method used

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  • A kind of blackening liquid and its preparation method and use method
  • A kind of blackening liquid and its preparation method and use method
  • A kind of blackening liquid and its preparation method and use method

Examples

Experimental program
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Effect test

Embodiment 1

[0035]A black solution of the present embodiment, with water as a solvent, containing a mass concentration as follows:

[0036]

[0037] The method of preparing the blacking fluid of the present embodiment includes the steps of:

[0038] 1) Dissolve the selenium dioxide in the water according to the ratio;

[0039] 2) Add polyethylene glycol, phosphoric acid and sodium trimophosphate mixture, and the pH is 2.5 after adding the buffer, and the blacking liquid is obtained.

Embodiment 2

[0041] A black solution of the present embodiment, with water as a solvent, containing a mass concentration as follows:

[0042]

[0043] The method of preparing the blacking fluid of the present embodiment includes the steps of:

[0044] 1) Dissolve the selenium dioxide in the water according to the ratio;

[0045] 2) Add polyethylene glycol, phosphoric acid and sodium trimophosphate mixture, and the pH is 2.5 after adding the buffer, and the blacking liquid is obtained.

Embodiment 3

[0047] A black solution of the present embodiment, with water as a solvent, containing a mass concentration as follows:

[0048]

[0049] The method of preparing the blacking fluid of the present embodiment includes the steps of:

[0050] 1) Dissolve the selenium dioxide in the water according to the ratio;

[0051] 2) Add polyethylene glycol, phosphoric acid and sodium trimophosphate mixture, and the pH is 2.5 after adding the buffer, and the blacking liquid is obtained.

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Abstract

The invention discloses blackening liquid, a manufacturing method of the blackening liquid and an application method of the blackening liquid. The blackening liquid uses water as a solvent, and comprises, by mass concentration, 0.1g / L-5g / L of selenium dioxide, 0.1g / L-5g / L of dispersing agents and 0.1g / L-10g / L of buffering agents. The blackening liquid can have a good blackening effect, the reflectivity and the brightness of copper are obviously reduced, the visual effect is unobvious, the shadow elimination effect is achieved, the copper surface is evenly blackened, copper mesh lines are complete, the electrical conductivity of copper is not affected, and the good blackening effect stability is formed. The manufacturing method of the blackening liquid is simple, the application temperatureis close to the normal temperature, the operation is convenient, the blackening method is simple, the cost is low, and the blackening effect is stable.

Description

Technical field [0001] The present invention belongs to the technical field of black, and is related to a black solution and a method of use, and more particularly to a blacking solution suitable for use in a bright copper film or a copper grid touch screen and a method of use. Background technique [0002] Copper is a metal material with good conductivity, low cost, is the most important conductive substance on the circuit board, display and other devices. In some special applications, a thin layer of copper film is formed on the substrate by spraying, vapor deposition or vacuum sputtering, etc. However, the copper film formed by these processes typically has a high metabolic visibility and strong reflectivity, which is easily perceived when the line is made, affecting the visual effect of the user. At the same time, the line width of the copper grid on the touch screen is generally 2-5 μm, generally 5 μm or less, the naked eye is not easy, but it is relatively bright, reflectiv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/52
CPCC23C22/52
Inventor 邵永存明东远李晓红章晓冬刘江波童茂军
Owner GUANGDONG SKYCHEM TECH LTD
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