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Edge finishing method of capacitive touch screen

A technology of capacitive touch screen and edge processing, applied in the direction of electrical digital data processing, input/output process of data processing, instruments, etc., can solve the problems of increasing processing steps and processing costs, not being able to process external panels, and reducing production yield , to achieve the effect of saving processing steps and improving processing yield

Active Publication Date: 2011-05-18
SHANTOU GOWORLD DISPLAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] According to the existing technology, the curved contour of the above-mentioned outer panel needs to be processed by edge grinding and polishing. Since the machining uses hard abrasives and polishing tools, it is difficult to make the edge of the outer panel have a sufficiently smooth shape
In addition, mechanical processing is likely to cause edge cracking, resulting in a decrease in production yield, and it is impossible to process some outer panels with relatively small edges and thin thickness
[0006] In addition, the existing capacitive screen generally requires additional processing steps to form an anti-reflection layer and an anti-fingerprint coating after the finished product, which increases the processing steps and processing costs.

Method used

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  • Edge finishing method of capacitive touch screen

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Experimental program
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Effect test

Embodiment approach 1

[0034] Embodiment 1 (for capacitive touch screens of all structures)

[0035] The edge processing method of this capacitive touch screen is characterized in that comprising the following steps:

[0036] Step 1, such as Figure 4 As shown, organic resin is used to coat the inside of the outer panel 1 to form the inner protective layer 2; the thermal melting temperature of the organic resin forming the inner protective layer 2 is between 150-200°C, and the refractive index of the inner protective layer 2 is between that of the electrode material Between air and air, the thickness of the inner protective layer 2 is 1-5 μm.

[0037] Step two, such as Figure 4 As shown, the outer protective layer 3 is formed by coating the outer surface of the outer panel 1 with an organic resin; and the thickness of the outer protective layer 3 is set to 20-100 nm.

[0038] Step three, such as Figure 5 As shown, the abrasive tool 4 with a tapered longitudinal section is used to grind away the ...

Embodiment approach 2

[0041] Embodiment 2 (for capacitive touch screens of all structures)

[0042] Such as Figure 8 As shown, in the case that the other steps are the same as those in the first embodiment, in step 3, while the inner protective layer 2 and the outer protective layer 3 in the inner and outer edge regions of the outer panel 1 are worn away, the part of the exposed area 5 is further worn away Outer panel 1 plate quality 7, forms pre-etched shape 9, further etches as Figure 9 The sleek shape shown in 8. The pre-etched shape 9 can be as Figure 10 The protruding inclined shape 10 can also be as Figure 11 The upper and lower asymmetric shapes 12 are shown.

Embodiment approach 3

[0043] Embodiment 3 (for capacitive touch screens with the first and second structures)

[0044] This embodiment is mainly aimed at capacitive touch screens with the first and second structures. In order to save costs, when other steps are the same as those in Embodiment 1 or Embodiment 2, the difference is that in Step 1 and Step 2, the internal protection Both the first layer and the outer protective layer use ordinary organic resin, and there is no need to limit the thickness of the inner protective layer and the outer protective layer, and after step 4 is completed, the inner protective layer and the outer protective layer are peeled off by a peeling process.

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Abstract

The invention relates to an edge finishing method of a capacitive touch screen, comprising the steps of: respectively forming an inner protection layer and an outer protection layer at the inner and outer sides of an outer faceplate; grinding off the inner protection layer and the outer protection layer in the area of edges of the inner and outer sides of the outer faceplate by utilizing a grinding tool to form an uncovering area of the outer faceplate; and etching off partial outer faceplate material in the uncovering area by utilizing glass etching liquid to ensure that the edge of the outer faceplate is in a smooth shape through controlling etching quantity. In the invention, by means of the processing method, the edge of the outer faceplate of the capacitive touch screen has a smoother shape and the processing yield can be enhanced; the processing method is suitable for the processing of some thinner outer faceplates; moreover, the inner protection layer and the outer protection layer in the method can respectively serve as an anti-reflection optical layer and an anti-fingerprint coating to be reserved in an end product, thereby saving relevant processing steps.

Description

technical field [0001] The invention relates to a manufacturing method of a capacitive touch screen, in particular to an edge processing method of a capacitive touch screen. Background technique [0002] In recent years, with the rapid development and application of information technology, wireless mobile communications and information home appliances, people's dependence on electronic products is increasing day by day. In order to achieve more convenience, smaller size and more user-friendly, many information products have changed from traditional keyboards or mice as input devices to capacitive touch screens arranged in front of display screens as input devices. Among them, the projected capacitive capacitive touch screen has the advantages of high transmittance, no need to apply force when touching, and can resist harsh external environments. It can also detect multiple touch points simultaneously during operation, and has a good application prospect. [0003] A capaciti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044
Inventor 沈奕吴永俊余荣林铿崔卫星朱世健孙楹煌林德志
Owner SHANTOU GOWORLD DISPLAY
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