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Method for eliminating residual solution during etching for capacitive touch screen

A capacitive touch screen and a touch screen technology are applied in the field of eliminating the etching residual solution of the capacitive touch screen and eliminating the residual solution, which can solve the problems such as the etching solution affecting the product quality, and achieve the effects of high production efficiency, simple method and product quality assurance.

Inactive Publication Date: 2013-02-13
NANJING PANDA ELECTRONICS
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Problems solved by technology

[0008] The purpose of the present invention is to solve the problem that some impurities in the etching solution and the solution remain in the junction of the etched glass and the ITO film during the production process of the existing capacitive touch screen, which will seriously affect the product quality. Method for etching residual solution in touch screen

Method used

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  • Method for eliminating residual solution during etching for capacitive touch screen
  • Method for eliminating residual solution during etching for capacitive touch screen

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] Such as Figure 1-2 shown.

[0022] A method for eliminating etching residual solution of capacitive touch screen, it comprises the following steps:

[0023] First, place the etched touch screen hanger on the figure 1 on the bracket shown, and place the bracket in 90 seconds figure 2 In the shown soaking tank filled with cleaning liquid, the liquid level of the cleaning liquid in the soaking tank should be higher than the effective working area of ​​the touch screen;

[0024] Secondly, the touch screen is soaked in the soaking box for 25 to 35 minutes, then taken out and immediately enters the next process;

[0025] The weight percentage of the cleaning solution is: 0.8-1% HCl, 0.05%-0.07% HNO 3 and the remainder of deionized water.

[0026] Stent and solution do not react. During production, the ITO glass substrate produced in ba...

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Abstract

The invention relates to a method for eliminating residual solution during etching for a capacitive touch screen, which is characterized by comprising the following steps of: firstly, putting the etched touch screen on a support, and putting the support in an immersing box filled with cleaning fluid with 90 seconds, wherein the liquid level of the cleaning fluid in the immersing box is higher than an effective work region of the touch screen; and secondly, immersing the touch screen in the immersing box for 25-35 minutes, and then taking the touch screen out for performing next process. The cleaning liquid is prepared by weight: 0.8-1% of HCL (hydrogen chloride), 0.05-0.07% of HNO3 and the balance of deionized water. According to the invention, the residual solution in the etching process can be eliminated to ensure the product quality and guarantee the normal operation of the follow-up process.

Description

technical field [0001] The invention relates to a manufacturing method of a capacitive touch screen, in particular to a method for eliminating residual solution used in the manufacturing process of a capacitive touch screen sensor, in particular to a method for eliminating etching residual solution of a capacitive touch screen. Background technique [0002] At present, capacitive technology touch screens work by using the current induction of the human body. The capacitive touch screen is a composite glass screen, the surface of the glass screen is coated with ITO, the outermost layer is a thin layer of silica glass protective layer, the interlayer ITO coating is used as the working surface, the electrodes are drawn out from the working surface, and the edge has a protective layer to ensure good working environment. When a finger touches the metal layer, due to the electric field of the human body, a coupling capacitor is formed between the user and the surface of the touch...

Claims

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Application Information

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IPC IPC(8): B08B3/08
Inventor 池荣军
Owner NANJING PANDA ELECTRONICS
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