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FOG touch screen and production process thereof

A production process and touch screen technology, applied in the direction of instruments, calculations, electrical digital data processing, etc., can solve the problems of low production efficiency, low production yield, complex structure, etc., achieve low production cost, improve adhesion performance, reduce The effect of volume resistance

Inactive Publication Date: 2020-01-14
DONGGUAN HONG KAI TOUCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen from the above that the current commonly used capacitive touch screen structure has a large thickness, a relatively large weight, a complex structure, and a variety of processes resulting therefrom.
The production efficiency is low, and its manufacturing yield is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A kind of production technique of FOG touch screen, comprises the steps:

[0040] (1) Printing and etching paste: clean the ITO, set aside, print the etching paste on the front of the ITO, inspect, bake and clean, then print the etching paste on the back of the ITO, inspect, bake and then clean, according to the design drawings in the ITO A plurality of electrodes are etched on it;

[0041] (2) Print protective glue: print protective glue on the front of the ITO after step (1) printing etching paste, bake, then print protective glue on the reverse side of ITO, bake again;

[0042] (3) Printing silver paste: print silver paste on the front side of ITO after step (2) printing protective glue, inspect, bake, then print silver paste on the back of ITO, inspect, and bake again;

[0043] (4) Laser laser: The front and back sides of the ITO after printing silver paste in step (3) are etched out by laser laser according to the design drawings and the corresponding positions of...

Embodiment 2

[0060] The difference between this embodiment and the above-mentioned embodiment 1 is:

[0061] In described step (1), printing etch paste uses screen plate to be 380 orders, and pressure is 5kg / cm 2 , the speed is 3mm / s; the baking temperature is 90°C, and the baking time is 40min.

[0062] In the step (2), the printing protective glue uses a screen with a screen size of 180 mesh and a pressure of 5kg / cm 2 , the speed is 3mm / s, the thickness is 18μm; the baking temperature is 110°C, and the baking time is 40min.

[0063] The protective glue is made of the following raw materials in parts by weight: 25 parts of acrylated polyacrylate, 12 parts of amino resin, 8 parts of alkyd resin, 9 parts of polyamide resin, 5 parts of maleic acid modified rosin resin, 2 parts -2 parts of hydroxy-2-methyl-1-phenyl-1-acetone, 1.2 parts of sodium lauryl sulfate, 5 parts of nano silicon powder, 1.5 parts of monoglyceride stearate, polydimethylsiloxane 1.2 parts, 0.8 parts of polyoxyethylene ...

Embodiment 3

[0073] The difference between this embodiment and the above-mentioned embodiment 1 is:

[0074] In described step (1), printing etch paste uses screen plate to be 400 orders, and pressure is 6kg / cm 2 , the speed is 5mm / s; the baking temperature is 100°C, and the baking time is 30min.

[0075] In the step (2), the printing protective glue uses a screen with a screen size of 200 mesh and a pressure of 6kg / cm 2 , the speed is 5mm / s, the thickness is 20μm; the baking temperature is 120°C, and the baking time is 30min.

[0076] The protective glue is made of the following raw materials in parts by weight: 30 parts of acrylated polyacrylate, 15 parts of amino resin, 10 parts of alkyd resin, 10 parts of polyamide resin, 7 parts of maleic acid modified rosin resin, 2 parts -3 parts of hydroxy-2-methyl-1-phenyl-1-acetone, 1.5 parts of sodium lauryl sulfate, 6 parts of nano silicon powder, 2 parts of monoglyceride stearate, polydimethylsiloxane 1.5 parts, 1 part of polyoxyethylene po...

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PUM

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Abstract

The invention relates to the technical field of touch screens, in particular to an FOG touch screen and a production process thereof. The production process comprises the steps of etching paste printing, protection glue printing, silver paste printing, laser, insulation glue printing, cutting, binding and glue sealing. Every time one surface of the etching paste and one surface of the silver pasteare printed, inspection is conducted, spot check is carried out after laser, false pressure testing is carried out after cutting and splitting, further testing is carried out after binding, the product yield is greatly improved by adopting multiple layers of inspection and testing steps, the process is simple, the production efficiency is high, and the production cost is low. The manufactured FOGtouch screen is high in hardness, good in abrasion resistance, high in touch precision, good in display effect, small in thickness and light in weight.

Description

technical field [0001] The invention relates to the technical field of touch screens, in particular to a FOG touch screen and a production process thereof. Background technique [0002] The touch screen is a device that converts the sensing signal into a digital signal to realize human-computer interaction; among them, the capacitive touch screen is the capacitance change generated between the finger or the conductive medium and the electrode on the conductive substrate when touching, through the driver chip. Digital conversion, output the coordinate position of finger or conductive medium touch. [0003] At present, capacitive touch screens have been widely used in mobile phones, tablets and other fields. At present, the multi-point capacitive touch screen traditionally used is generally a structure in which two layers of glass are bonded through optical glue; or a structure in which a layer of glass and two layers of sensor conductive films are bonded through optical glue...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044
CPCG06F3/044G06F2203/04103
Inventor 陈凯良
Owner DONGGUAN HONG KAI TOUCH CO LTD