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Method for performing chemical nickel plating on surface of capacitive touch screen

A capacitive touch screen and electroless nickel plating technology, applied in the field of electroless nickel plating, can solve problems such as poor nickel plating effect

Active Publication Date: 2015-03-25
FUJIAN FEIYANG OPTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the activation step of electroless nickel plating, the prior art uses PdCl 2 As an activator, it will cause conductive substances to be plated between electrodes that do not need to be nickel-plated, so that the nickel-plating effect is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Degreasing: Put the ITO thin film glass into 1mol / L alkaline solution for immersion treatment at a temperature of 50°C for 3 minutes, and then wash it with hot water and cold water for 2 minutes each. The alkaline solution includes The following ingredients: 20g / L NaHCO 3 , 16g / L KOH, 20g / L Na 3 PO 4 And 4g / L OP emulsifier (alkylphenol polyoxyethylene ether), deionized water;

[0042] (2) Etching: Put the degreased ITO thin film glass into an acid etchant at room temperature for 4 minutes, then wash and rinse twice with water for 2 minutes each time, so that the ITO surface is finely roughened and improved. The adhesion of coating, described acid etchant is the hydrochloric acid of 5mol / L;

[0043] (3) Activation: Place the etched ITO thin film glass in an activator for immersion treatment at room temperature for 2 minutes, then wash and rinse twice for 2 minutes each time, the activator is as follows preparation:

[0044] (3.1) Preparation of palladium complex...

Embodiment 2

[0056] (1) Degreasing: Put the ITO film glass into 1mol / L alkaline solution for immersion treatment at a temperature of 50°C for 2 minutes, and then wash it with hot water and cold water for 2 minutes each. The alkaline solution includes The following ingredients: 20g / L NaHCO 3 , 16g / L KOH, 20g / L Na 3 PO 4 And 4g / L OP emulsifier (alkylphenol polyoxyethylene ether), deionized water;

[0057] (2) Etching: Put the degreased ITO thin film glass into an acid etchant at room temperature for 4 minutes, then wash and rinse twice with water for 2 minutes each time, so that the ITO surface is finely roughened and improved. The adhesion of coating, described acid etchant is the hydrochloric acid of 5mol / L;

[0058] (3) Activation: Place the etched ITO thin film glass in an activator for immersion treatment at room temperature for 3 minutes, then wash and rinse twice for 2 minutes each time, the activator is as follows preparation:

[0059] (3.1) Preparation of palladium complex:

...

Embodiment 3

[0071] (1) Degreasing: Put the ITO film glass into 1mol / L alkaline solution for immersion treatment at a temperature of 50°C for 4 minutes, and then wash it with hot water and cold water for 2 minutes each. The alkaline solution includes The following ingredients: 20g / L NaHCO 3 , 16g / L KOH, 20g / L Na 3 PO 4 And 4g / L OP emulsifier (alkylphenol polyoxyethylene ether), deionized water;

[0072] (2) Etching: Put the degreased ITO thin film glass into an acid etchant at room temperature for 5 minutes, then wash and rinse twice with water for 2 minutes each time, so that the ITO surface is finely roughened and improved. The adhesion of coating, described acid etchant is the hydrochloric acid of 5mol / L;

[0073] (3) Activation: Place the etched ITO thin film glass in an activator for immersion treatment at room temperature for 2 minutes, then wash and rinse twice for 2 minutes each time, the activator is as follows preparation:

[0074] (3.1) Preparation of palladium complex:

[0...

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PUM

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Abstract

The invention provides a method for performing chemical nickel plating on the surface of a capacitive touch screen. The method comprises the step that an ITO thin film is sequentially subjected to ungrease treatment, corrosion treatment, activation treatment, reduction treatment and chemical nickel plating; an activating agent used in the activation treatment step is prepared according to the following steps: PdC12, deionized water and concentrated hydrochloric acid are mixed and heated at the temperature of 50 DEG C to obtain H2PdC14 solutions; diethylenetriamine is added into the H2PdC14 solutions to keep for 4 hours at the temperature of 50 DEG C; solvents are evaporated and removed to obtain a palladium compound; the palladium compound is dissolved into N-methyl pyrrolidone to obtain NMP solutions of the palladium compound; the NMP solutions are mixed with diethylene glycol monoethyl ether and diglycidyl ether to obtain activating agents. Compared with the prior art, the activating agents prepared by using the method are used for activating, thereby avoiding the plating of conductive substances on the part with no need of nickel plating between the electrodes in a chemical nickel plating step, and a good nickel plating effect is guaranteed.

Description

technical field [0001] The invention relates to the technical field of electroless nickel plating, in particular to a method for performing electroless nickel plating on the surface of a capacitive touch screen. Background technique [0002] Touch screen (TP) technologies are divided into resistive, surface capacitive, projected capacitive, surface acoustic wave, and infrared. Among them, capacitive touch screens are widely used in mobile devices and consumer electronics. Touch screen technology is convenient for people to operate and use computers. It is a promising interactive input technology. Therefore, it has been widely valued by various countries, and a lot of manpower and material resources have been invested in its research and development. New touch screens continue to emerge. [0003] Tin-doped indium oxide (Indium Tin Oxide, ITO for short) thin film is a semiconductor material with excellent photoelectric properties and electrical conductivity, and has been wid...

Claims

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Application Information

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IPC IPC(8): C03C17/36
CPCC03C17/3607
Inventor 王杰然
Owner FUJIAN FEIYANG OPTRONICS
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