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Blackening liquid medicine for metal meshes, blackening method of metal meshes, metal meshes and touch screen

A metal mesh and blackening technology, applied in metal material coating process, input/output process of data processing, instruments, etc., can solve problems such as reducing reflectivity and brightness, affecting metal conductivity, and general fading effect. , to achieve the effect of reducing brightness and reflectivity, good shadow removal effect, and stable blackening effect

Active Publication Date: 2019-04-05
LENS TECH CHANGSHA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And this kind of blackening layer is coated, which belongs to the physical blackening method. The process of blackening the metal grid with this physical blackening method is relatively cumbersome, but the metal is blocked by the blackening layer to reduce the reflectivity and Brightness, shadow removal effect is average, it is easy to affect the metal conductivity

Method used

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  • Blackening liquid medicine for metal meshes, blackening method of metal meshes, metal meshes and touch screen
  • Blackening liquid medicine for metal meshes, blackening method of metal meshes, metal meshes and touch screen
  • Blackening liquid medicine for metal meshes, blackening method of metal meshes, metal meshes and touch screen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0114] A blackening medicinal solution, which is composed of the following components in mass percentage: 2% of selenous acid, 4.5% of sodium persulfate, 0.1% of copper sulfate, 0.1% of sodium gluconate and 93.3% of water.

[0115] The method for blackening the copper metal grid with the above-mentioned blackening liquid comprises the following steps:

[0116] (1) Soak the copper metal grid in the above-mentioned blackening liquid at a temperature of 15°C for 60s;

[0117] (2) Wash the metal grid with water after soaking, the washing temperature is 30°C, and the washing time is 60s;

[0118] (3) Dry the washed metal grid at a drying temperature of 65° C. and a drying time of 4 minutes.

[0119] The brightness L*, reflectance Y value and channel impedance of the entire metal before and after blackening are shown in Table 1 below.

[0120] Table 1 Example 1 The brightness and conductivity of the entire metal before and after blackening

[0121]

Embodiment 2

[0123] A blackening medicinal liquid, which is composed of the following components in mass percentage: 0.2% of selenous acid, 1% of sodium persulfate, 0.2% of copper sulfate, 0.2% of sodium gluconate and 98.4% of water.

[0124] The method for blackening the copper metal grid with the above-mentioned blackening liquid comprises the following steps:

[0125] (1) Soak the copper metal grid in the above-mentioned blackening liquid at a temperature of 35°C for 5s;

[0126] (2) Wash the metal grid with water after soaking, the washing temperature is 40°C, and the washing time is 30s;

[0127] (3) Dry the washed metal grid at a drying temperature of 55° C. and a drying time of 6 minutes.

[0128] The brightness L*, reflectance Y value and channel impedance of the entire metal before and after blackening are shown in Table 2 below.

[0129] Table 2 Example 2 The brightness and conductivity of the entire metal before and after blackening

[0130]

Embodiment 3

[0132] A blackening medicinal liquid, which is composed of the following components in mass percentage: 0.05% of selenous acid, 0.1% of sodium persulfate, 1% of copper sulfate, 0.01% of sodium gluconate and 98.84% of water.

[0133] The method for blackening the copper metal grid with the above-mentioned blackening liquid comprises the following steps:

[0134] (1) Soak the copper metal grid in the above-mentioned blackening liquid at a temperature of 25°C for 30s;

[0135] (2) Wash the metal grid with water after soaking, the washing temperature is 35°C, and the washing time is 45s;

[0136] (3) Dry the washed metal grid at a drying temperature of 60° C. and a drying time of 5 minutes.

[0137] The brightness L*, reflectance Y value and channel impedance of the entire metal before and after blackening are shown in Table 3 below.

[0138] Table 3 Example 3 The brightness and conductivity of the entire metal before and after blackening

[0139]

[0140]

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Abstract

The invention discloses a blackening liquid medicine for metal meshes, a blackening method of the metal meshes, the metal meshes and a touch screen, and relates to the technical field of the metal meshes. The blackening liquid medicine comprises the following components including, by mass percentage, 0.05% to 5% of selenite, 0 to 10% of persulfate, 0.01% to 1% of a stabilizer, 0.01% to 1% of an inhibitor and the balance water. The blackening method of the metal meshes comprises the step that the blackening liquid medicine is used for soaking the metal meshes. The defect that at present, the physical blackening manner for coating a blackening layer is complex, the disappearing effect is general, and the metal conductive property is easy are overcome. According to the blackening liquid medicine, the selenite, the stabilizer and the inhibitor are matched, so that the good blackening effect is achieved, the reflectance and brightness of metal are obviously reduced, the visual effect is notobvious, the disappearing effect is achieved, a line is intact after blackening is carried out, and the electrical conductivity is not influenced.

Description

technical field [0001] The invention relates to the technical field of metal grids, in particular to a blackening chemical solution for metal grids, a blackening method thereof, a metal grid and a touch screen. Background technique [0002] Metal Mesh technology is a conductive metal mesh pattern formed by pressing on plastic films such as PET by using metal materials such as silver and copper or oxides that are easily available and inexpensive. Its theoretical minimum resistance value can reach 0.1 ohm / square inch, and it has good electromagnetic interference shielding effect. Due to the advantages of high conductivity, high light transmittance, and good anti-interference ability, metal grids have gradually replaced ITO and become the new mainstream of touch screen electrodes. [0003] The metal of the metal grid touch screen is generally copper, silver or aluminum, etc., and the line width is generally 2-5 μm, generally below 5 μm, which is difficult to see with the naked...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/48G06F3/041
CPCC23C22/48G06F3/0412G06F2203/04103
Inventor 饶桥兵周宇峰
Owner LENS TECH CHANGSHA
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