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High reliable touch screen and manufacturing technique

A manufacturing process and touch screen technology, applied in instruments, computer parts, graphics reading, etc., can solve the problems of low square resistance uniformity of the electric film, affecting the accuracy and reliability of touch positioning of the touch screen, etc., so as to improve the square resistance uniformity , avoid deformation, and improve reliability

Inactive Publication Date: 2003-10-08
NO 55 INST CHINA ELECTRONIC SCI & TECHNOLOGYGROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The square resistance uniformity of the electric film is low, which will affect the accuracy and reliability of the touch positioning of the touch screen

Method used

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  • High reliable touch screen and manufacturing technique
  • High reliable touch screen and manufacturing technique
  • High reliable touch screen and manufacturing technique

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] like image 3 As shown, in the conventional four-wire resistance analog touch screen of FIG. 1 , there are two pairs of orthogonal upper and lower screen electrodes 13 and 23 , which are respectively fabricated on the conductive films 10 and 20 of the upper screen 1 and the lower screen 2 . Since a pair of electrodes 13 are fabricated on the transparent resin film of the upper screen, they are generally fabricated by curing silver paste at a low temperature (generally not higher than 120° C.). In this embodiment, as image 3 As shown, the electrode 13 of the upper screen and all the lead wires 14, 24 of the upper and lower screens are all made on the area 21 where the lower screen does not have an ITO conductive film, and are insulated from each other; the electrode 23 of the lower screen is still made in the lower screen. on the membrane 20. The thickness of the electrode 13 of the upper screen is slightly larger than the total thickness of the electrode 23 of the lo...

Embodiment 2

[0019] like Figure 4 shown, with figure 2 Compared with the traditional five-wire resistance analog touch screen, in this embodiment, the electrodes 13 of the upper screen and all the lead wires 14 and 24 of the upper and lower screens are made on the area 21 of the lower screen without the ITO conductive film, and are insulated from each other; The electrodes 23 of the screen are still made on the conductive ITO film 20 of the lower screen. The thickness of the electrode 13 of the upper screen is slightly larger than the total thickness of the electrode 23 of the lower screen and the insulating layer 6, and all electrodes and electrode leads are sintered at high temperature with the high-temperature sintered silver paste as in Example 1. Then, the insulating layer 6 and the spacer lattice 7 are made of low temperature curing or ultraviolet curing material, and then the upper and lower screens 1 and 2 are sealed by the sealing glue 5 . The electrodes 13 of the upper screen ...

Embodiment 3

[0021] like Figure 5 As shown, this is an example of a six-wire resistive analog touch screen embodiment. In this embodiment, the electrodes 13 and the corresponding lead wires 14 of the upper screen of the two six-wire resistance analog touch screens that should have been fabricated on the upper screen 1 are all fabricated together with the electrode lead wires 24 of the lower screen. There is no ITO conduction on the lower screen. The electrodes 23 of the lower screen are still formed on the conductive ITO film 20 of the lower screen. The thickness of the electrode 13 of the upper screen is slightly larger than the total thickness of the electrode 23 of the lower screen and the insulating layer 6, and all electrodes and electrode leads are sintered at high temperature with the high-temperature sintered silver paste as in Example 1. Then, the insulating layer 6 and the spacer lattice 7 are made of low temperature curing or ultraviolet curing material, and then the upper and...

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Abstract

A reliable resistor analog touching screen and its process technology is that an electrode and lead-out wire of upper screen of the said touching screen and an electrode and a lead-out wire of a lower screen are mounted on the lower screen and a high temperature processing method is applied to increase the joining strength of the electrode, the glass base plate and the controller cable to improve its temperature character and the squeare resistance uniformity of ITO conductive film of the lower screen, any graph is not processed on the upper transparent resin film avoiding deformation of the upper soft film caused by heating and solidity to increase its reliability.

Description

technical field [0001] The invention relates to a highly reliable resistance analog touch screen and a manufacturing process thereof. Background technique [0002] The existing resistive analog touch screen, as shown in Figure 1, figure 2 As shown, it is composed of upper screen 1 and lower screen 2 and control circuit. The lower screen 2 is generally a glass plate coated with a transparent ITO (indium oxide / tin oxide) conductive film 20, while the upper screen 1 is a transparent resin film coated with a conductive film 10, and the edges of the upper and lower screens 1 and 2 are made respectively. The electrodes 13 and 23 are connected to the control circuit through the electrode lead wires 14 and 24. The edge electrodes of the upper and lower screens 1 and 2 are separated by an insulating layer 6 and sealed by sealing glue or double-sided tape 5. The spacer lattice 7 is used to insulate the conductive films 10 and 20 of the upper and lower panels. When the upper screen ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J9/02
Inventor 刘忠安张继军
Owner NO 55 INST CHINA ELECTRONIC SCI & TECHNOLOGYGROUP CO LTD
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