Process for manufacturing single-layer multi-point capacitive touch screen with pure ITO membrane structure

A capacitive touch screen, single-layer multi-point technology, applied in electrical digital data processing, data processing input/output process, instruments, etc., can solve the problems of increasing etching process, waste materials, thick product thickness, etc., to reduce etching process, avoid side erosion problems, and facilitate the effect of bridging technology

Inactive Publication Date: 2015-08-05
GUANGDONG TAITONG SCI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, the copper-plated ITO film is used as the material, and the metal etching process is added in the manufacturing process, and the material is wasted; at the same time, the precision of the product obtained by this process is low, the product thickness is relatively thick, and the defect rate is high. Side Etching Problems During Metal Etching

Method used

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  • Process for manufacturing single-layer multi-point capacitive touch screen with pure ITO membrane structure
  • Process for manufacturing single-layer multi-point capacitive touch screen with pure ITO membrane structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of pure ITO film structure single-layer multi-point capacitive touch screen manufacturing process provided by the present invention, please refer to figure 1 As shown, the following steps are sequentially included: after cutting the ITO film of a predetermined size, the following steps are carried out in sequence;

[0030] S1. Aging: Carry out high-temperature aging on pure ITO film. The aging temperature is 140°C. Utilizing high-temperature aging can improve the stability of the ITO film substrate, increase the transmittance of the ITO film, and eliminate part of the optical polarization phenomenon at the same time, reducing light. Optical interference between the film layers; secondly, the resistance of the ITO film surface can be changed; thirdly, the ITO can be changed from an amorphous state to a crystalline state to improve stability;

[0031] S2. Coating: apply a liquid photoresist on the surface of the aged ITO film in step S1, the liquid photoresist is t...

Embodiment 2

[0040] A kind of pure ITO film structure single-layer multi-point capacitive touch screen manufacturing process provided by the present invention, please refer to figure 1 As shown, the following steps are sequentially included: after cutting the ITO film of a predetermined size, the following steps are carried out in sequence;

[0041] S1. Aging: Carry out high-temperature aging on pure ITO film. The aging temperature is 140°C. Utilizing high-temperature aging can improve the stability of the ITO film substrate, increase the transmittance of the ITO film, and eliminate part of the optical polarization phenomenon at the same time, reducing light. Optical interference between the film layers; secondly, the resistance of the ITO film surface can be changed; thirdly, the ITO can be changed from an amorphous state to a crystalline state to improve stability;

[0042] S2. Coating: apply a liquid photoresist on the surface of the aged ITO film in step S1, the liquid photoresist is t...

Embodiment 3

[0051] A kind of pure ITO film structure single-layer multi-point capacitive touch screen manufacturing process provided by the present invention, please refer to figure 1 As shown, the following steps are sequentially included: after cutting the ITO film of a predetermined size, the following steps are carried out in sequence;

[0052] S1. Aging: Carry out high-temperature aging on pure ITO film. The aging temperature is 140°C. Utilizing high-temperature aging can improve the stability of the ITO film substrate, increase the transmittance of the ITO film, and eliminate part of the optical polarization phenomenon at the same time, reducing light. Optical interference between the film layers; secondly, the resistance of the ITO film surface can be changed; thirdly, the ITO can be changed from an amorphous state to a crystalline state to improve stability;

[0053] S2. Coating: apply a liquid photoresist on the surface of the aged ITO film in step S1, the liquid photoresist is t...

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Abstract

The invention relates to a process for manufacturing a single-layer multi-point capacitive touch screen with a pure ITO membrane structure and belongs to the technical field of touch screen manufacturing. The process sequentially comprises the steps of the cutting of an ITO membrane of a predetermined dimension, ageing, coating, exposure, developing, etching, membrane striping, insulating printing, silver paste printing and baking. The pure ITO membrane is adopted to serve as a raw material; compared with the adoption of a copper plating ITO membrane for a traditional yellow light process, a copper etching process is omitted, original partial printing of silver paste jumpers is modified into silver paste printing of a whole metal layer, silver wires are utilized to replace copper wires, the lateral erosion problem of copper etching is avoided, and chemicals used for etching and lateral erosion restraint are saved. In the aspect of the process, a manufacturing process is simplified, resources in the aspects of manpower, energy and auxiliary materials can be saved, and the rejection rate is reduced.

Description

technical field [0001] The invention relates to the technical field of touch screen production, in particular to a single-layer multi-point capacitive touch screen production process with a pure ITO film structure. Background technique [0002] Capacitive touch screen is a kind of computer input and output device, which has the advantages of high reliability and good durability. It is widely used in communication, consumer electronics, instrumentation and other aspects. It is an important part of human-computer interaction in intelligent mobile terminals. The capacitive touch screen is to output the coordinate position of the finger or conductive medium touch through the digital conversion of the driver chip by converting the capacitance change between the finger or the conductive medium and the electrode on the substrate when touching. At present, capacitive touch screens have been widely used in mobile phones, tablets and other fields. According to the base material, ther...

Claims

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Application Information

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IPC IPC(8): G06F3/044
Inventor 许明旭敖龙华曾昭杰
Owner GUANGDONG TAITONG SCI TECH
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