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Touch control panel and touch control type LCD device

A liquid crystal display and touch panel technology, applied in static indicators, instruments, electrical digital data processing, etc., can solve problems such as maintenance difficulties, polarizer damage, scrapped display panels, etc., and achieve better fixability and flatness. Reduce the effect of using

Inactive Publication Date: 2009-04-15
CHUNGHWA PICTURE TUBES LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If two layers of PET film are used to form the touch panel, the light transmittance will be affected, and the poor adhesion of indium tin oxide (ITO) on the PET film will make it difficult to control the quality of the process
[0004] In addition, China Taiwan Patent No. I223116 proposes a touch-sensitive liquid crystal display and its manufacturing method. The touch panel is formed between the upper polarizer and the upper glass substrate of the liquid crystal display unit, but the polarizer is not designed to be pressed. Therefore, it will affect the sensitivity of the contact point and also cause damage to the polarizer
In addition, the upper polarizer is fully attached to the PET film, but the PET and the color filter are bonded to the surroundings, which is prone to the defect of the polarizer being pulled out
Moreover, since the touch panel is formed between the upper polarizer and the upper glass substrate of the liquid crystal display unit, when a problem occurs in the touch panel, it is very difficult to repair, and the entire display panel may need to be scrapped.

Method used

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  • Touch control panel and touch control type LCD device
  • Touch control panel and touch control type LCD device
  • Touch control panel and touch control type LCD device

Examples

Experimental program
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Effect test

no. 1 example

[0037] figure 2 It is a structure diagram of a resistive touch panel according to the first embodiment of the present invention. The touch panel 200 includes a contact layer 210 , an intermediate layer 220 and a polarizer 240 . The intermediate layer 220 is disposed between the contact layer 210 and the polarizer 240 for separating the contact layer 210 and the polarizer 240 . The contact layer 210 can be formed of PET film, glass or polymer film, and serves as an area where the user contacts with the touch panel. The middle layer 220 can be formed by supporting particles, and is used to separate the polarizer 240 from the contact layer 210 when the contact layer 210 is not stressed. The polarizer 240 has a polarizing function (limiting the angle through which light passes) and an electrical signal transmission function required by the touch panel.

[0038] The polarizer 240 has a plurality of first electrodes 242, and the contact layer 210 has a plurality of second electro...

no. 2 example

[0040] The above-mentioned technical means of the first embodiment can also be applied to capacitive touch panels, image 3 It is a structural diagram of a capacitive touch panel according to a second embodiment of the present invention. The touch panel 300 includes a protective layer 310, an electrode image layer 320, a conductive layer 330, and a polarizer 340, wherein the conductive layer 330 is disposed on the polarizer 340, and can be directly formed on the surface of the polarizer 340 by using indium tin oxide, so that It has electromagnetic shielding effect. The electrode image layer 320 is arranged between the protective layer 310 and the conductive layer 330, the upper and lower surfaces of the electrode image layer 320 respectively have a plurality of first electrodes and second electrodes to form the required electrode image, while the protective layer 310 It is arranged on the electrode image layer 320 to protect the electrode image layer 320 .

[0041] In anothe...

no. 3 example

[0043] Figure 4 It is a structural diagram of a touch-sensitive liquid crystal display according to a third embodiment of the present invention. This embodiment further illustrates the structural relationship between the resistive touch panel and the liquid crystal display panel. The liquid crystal display 400 includes a lower polarizer 420, a liquid crystal display unit 410, an upper polarizer 430, a contact layer 210, and an intermediate layer 220, wherein the upper polarizer 430, the contact layer 210 and the intermediate layer 220 form a touch panel, and its structure description please refer to figure 2 , no longer repeat. In this example, the figure 2 The illustrated polarizer 240 is directly applied in the liquid crystal display 400 as the upper polarizer 430 .

[0044] The liquid crystal display unit 410 includes at least a first substrate and a second substrate, and the upper polarizer 430 is located on the surface of the first substrate, and the lower polarizer...

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PUM

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Abstract

The invention relates to a touch panel and a touch-control liquid crystal display; wherein, the touch panel comprises a polarizing plate which is provided with a plurality of first electrodes, a contact layer which is provided with a plurality of second electrodes and an intermediate layer which is arranged between the polarizing plate and the contact layer. The touch panel utilizes an upper polarizing plate on the liquid crystal displaying panel to replace a glass substrate and can form the structure of the touch panel on the upper polarizing plate directly. Therefore, the integrated process of the touch panel and the liquid crystal displaying panel can be simplified, and the use of the glass substrate is reduced, so that the cost is lowered, and the thickness and weight of the touch-control liquid crystal display are reduced.

Description

technical field [0001] The present invention relates to a touch panel, and in particular to a touch panel and a touch liquid crystal display which utilize a polarizer instead of a glass substrate. Background technique [0002] A touch panel is a tool that has been widely accepted by the public as an interface tool for information exchange. At present, there are mainly two types of touch panels that are widely used, namely resistive and capacitive. Most of their structures are composed of a layer of PET film (polyethylene terephthalate, PET) and a layer of glass. Then glue the touch panel to the liquid crystal panel by using glue. figure 1 It is a structure diagram of a resistive touch panel according to the conventional technology. The touch panel 100 is mainly composed of a PET film 110 , support particles 120 and a glass layer 130 , wherein the support particles 120 form an intermediate layer to separate the PET film 110 and the glass layer 130 . Surfaces of the PET fil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/133G06F3/041
Inventor 柯汉清张敏宏
Owner CHUNGHWA PICTURE TUBES LTD
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