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
CN106557207BActive Publication Date: 2020-03-10AU OPTRONICS CORP
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
AU OPTRONICS CORP
Publication Date
2020-03-10

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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.
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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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