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Touch display panel and sensing and driving method thereof

A technology for touch display panels and sensing electrodes, which is applied in the directions of instruments, calculations, and electrical digital data processing, etc., which can solve the problems of increased module thickness, more bonding work, and violation of the ultra-thin trend, and achieve a reduction in overall thickness , Reduce the effect of lamination

Active Publication Date: 2020-03-10
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of this type of external pressure sensor not only requires more bonding work, but also the thickness of the substrate of the additional pressure sensor will easily increase the thickness of the overall module, which is contrary to the current ultra-thin trend, and the external type pressure sensor may also degrade the optical quality of the LCD

Method used

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  • Touch display panel and sensing and driving method thereof
  • Touch display panel and sensing and driving method thereof
  • Touch display panel and sensing and driving method thereof

Examples

Experimental program
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Effect test

no. 1 example

[0066] Please refer to image 3 , image 3 It is a stacked diagram of the touch display panel 300 having the electrode layer 120 , the electrode layer 140 and the electrode layer 160 according to the first embodiment of the present invention. The touch display panel 300 can be applied to a display panel in which the common electrode layer and the array layer are closely adjacent to each other, such as horizontal electric field switching (In Plane Switching; IPS). The touch display panel 300 includes an upper substrate 110 , an electrode layer 120 , a dielectric layer 130 , an electrode layer 140 , a dielectric layer 150 , an electrode layer 160 , an array layer 170 and a lower substrate 180 from top to bottom. Wherein, the dielectric layer 130 can be a color filter layer 132 , and the dielectric layer 150 can be a liquid crystal gap (cell gap) layer 152 . The structure of the three electrode layers 120, 140 and 160 of the touch display panel 300 can be as described above (eg...

no. 2 example

[0068] Please refer to Figure 4 , Figure 4 It is a stacked diagram of a touch display panel 400 with three electrode layers 120 , 140 and 160 according to the second embodiment of the present invention. The touch display panel 400 includes an electrode layer 120 , a dielectric layer 130 , an electrode layer 140 , a dielectric layer 150 , an electrode layer 160 , an array layer 170 and a substrate 180 from top to bottom. Wherein, the dielectric layer 130 can be the upper substrate 110 and is interposed between the electrode layer 120 and the electrode layer 140 . The dielectric layer 150 may include a filter layer 132 and a liquid crystal layer 152 between the electrode layer 140 and the electrode layer 110 . In addition, the structures of the three electrode layers 120, 140 and 160 of the touch display panel 300 can be as described above (eg figure 2 ).

no. 3 example

[0070] Please refer to Figure 5 , Figure 5 It is a stacked diagram of a touch display panel 500 having three electrode layers 120 , 140 and 160 according to the third embodiment of the present invention. The touch display panel 500 can be applied to a display panel in which the common electrode layer and the array layer of horizontal electric field switching (IPS) are adjacent. The touch display device 500 includes an electrode layer 120 , a dielectric layer 130 , an electrode layer 140 , a dielectric layer 150 , an electrode layer 160 , an array layer 170 and a lower substrate 180 from top to bottom. Wherein, the dielectric layer 130 can be an insulating layer (insulator) 122 , and the dielectric layer 150 can be the upper substrate 110 , the filter layer 132 and the liquid crystal layer 152 . In addition, the structure of the three electrode layers 120, 140 and 160 of the touch display panel 300 can be as follows figure 2 mentioned.

[0071] The detailed operation of ...

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Abstract

The invention provides a touch display panel and a sensing and driving method thereof. The touch display panel includes a first electrode layer, a second electrode layer, a third electrode layer, a first dielectric layer, a second dielectric layer and an array layer. The first dielectric layer is disposed between the first electrode layer and the second electrode layer, and the second dielectric layer includes elastic material. The touch display panel performs touch position sensing through the first electrode layer and the second electrode layer, and performs touch pressure sensing through the second electrode layer and the third electrode layer. During the non-touch pressure sensing period, the common voltage required for the touch display panel to display images is provided to the third electrode layer.

Description

technical field [0001] The present invention relates to a touch display panel and its sensing and driving method, in particular to a touch display panel with the functions of detecting touch position and touch pressure and its sensing and driving method. Background technique [0002] Since the projected capacitive touch panel is integrated with a liquid crystal display (LCD), it can have a lower cost, and the thickness of the module can also be reduced accordingly. However, the touch sensor of the touch panel integrated with the liquid crystal display can only detect the touch position, but cannot detect the magnitude of the touch pressure. To have the function of detecting touch pressure, it needs to be realized by an external force sensor. However, the use of this type of external pressure sensor not only requires more bonding work, but also the thickness of the substrate of the additional pressure sensor will easily increase the thickness of the overall module, which is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/041G06F3/044G02F1/1333
CPCG02F1/13338G06F3/0412G06F3/044G06F3/0445G06F3/0446G06F3/04166G06F2203/04105G06F3/0447G02F1/133514G02F1/134336
Inventor 林城兴郭威宏
Owner AU OPTRONICS CORP
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