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Touch display panel, touch display device and driving method

A touch display panel and driver technology, which is applied in the fields of instruments, electrical digital data processing, and data processing input/output processes, etc., can solve the problems of large parasitic capacitance and poor touch detection sensitivity, so as to reduce parasitic capacitance, Improved touch detection sensitivity and reduced facing area

Pending Publication Date: 2021-04-20
XIAMEN TIANMA MICRO ELECTRONICS
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] Based on the touch display panel, the parasitic capacitance of the current touch display panel itself is relatively large, resulting in poor touch detection sensitivity

Method used

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  • Touch display panel, touch display device and driving method
  • Touch display panel, touch display device and driving method
  • Touch display panel, touch display device and driving method

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Embodiment Construction

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0035] During the invention and creation process of the present invention, the inventors found that the current parasitic capacitance of the touch display panel itself is mainly reflected in the capacitance existing between the cathode layer and the touch electrode layer; that is, in the case of ignoring other capacitances, The parasitic capacitance of the touch display panel itself is equal to the capacitance between the cathode layer and the touch electrode l...

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Abstract

The invention provides a touch control display panel, a touch control display device and a driving method, an existing cathode layer arranged on the whole surface is improved to form a plurality of auxiliary subunits and a plurality of cathode driving subunits, in the touch control charging stage, synchronous signals are adopted to drive the auxiliary subunits and touch control electrodes, so that the capacitance between the auxiliary subunits and the touch electrodes is extremely small, and the parasitic capacitance of the touch display panel is the capacitance between the negative electrode driving subunits and the touch electrode layer. The area, directly facing the touch electrode layer, of each negative electrode driving subunit is greatly reduced compared with the area, directly facing the touch electrode layer, of the whole negative electrode layer; therefore, the parasitic capacitance of the touch display panel is reduced to a great extent, equivalently, the difference value between the touch capacitance and the parasitic capacitance between the finger and the touch electrode layer is reduced, the capacitance disturbance phenomenon caused by finger touch is improved, and finally, the touch detection sensitivity of the touch display panel is improved.

Description

technical field [0001] The present invention relates to the technical field of touch display, and more specifically, to a touch display panel, a touch display device and a driving method. Background technique [0002] With the continuous development of science and technology, various display screens have been widely used in people's life and work, bringing great convenience to people's daily life. Among them, organic light emitting devices (Organic Light Emitting Diode, referred to as OLED), because of its low energy consumption, high resolution, high brightness, high luminous efficiency, fast response, wide viewing angle, no backlight, low cost and low driving voltage, etc. It has many advantages and has broad research and application prospects in the fields of display and light source. [0003] Based on the touch display panel, at present, the parasitic capacitance of the touch display panel itself is relatively large, resulting in poor touch detection sensitivity. Cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041
Inventor 周瑜卢峰
Owner XIAMEN TIANMA MICRO ELECTRONICS
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