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A touch display device and its driving method

A technology for touch display devices and display panels, which is applied in the fields of instruments, calculations, and electrical digital data processing, etc., and can solve the problems of increasing the thickness of liquid crystal display panels, increasing costs, and complicating design, so as to achieve small changes in structural design and save production costs , Realize the effect of pressure-sensitive touch function

Inactive Publication Date: 2020-05-12
HEFEI BOE OPTOELECTRONICS TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the way to achieve pressure sensing in the display field, especially in the field of mobile phones or tablets, is to set an additional pressure-sensitive detection electrode layer in the liquid crystal display panel. This design requires changes to the structural design of the liquid crystal display panel, and the design is complicated. And increase the thickness of the liquid crystal display panel, increase the cost

Method used

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  • A touch display device and its driving method
  • A touch display device and its driving method
  • A touch display device and its driving method

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Embodiment Construction

[0032] In order to make the purpose, technical solution and advantages of the present invention more clear, the specific implementation manners of the touch display device and the driving method thereof provided by the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described below are only used to illustrate and explain the present invention, not to limit the present invention. And in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. It should be noted that the size, film thickness and shape of each figure in the drawings do not reflect the real scale, and the purpose is only to illustrate the content of the present invention. And the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. ...

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Abstract

The invention discloses a touch display device and a driving method thereof. By multiplexing a driving signal line for driving a light-emitting unit into a detection electrode, that is, multiplexing an existing driving signal line into a detection electrode, the The detection electrode layer is additionally arranged in the display panel, so that the structural design of the touch display device is slightly changed, the thickness of the display panel can not be increased, and the production cost is saved. Moreover, by making the detection electrode and the conductive layer form a capacitance, the capacitance can change according to the change of the touch pressure. In this way, when the position of the detection electrode is pressed, the distance between the detection electrode and the conductive layer changes, resulting in The change in capacitance between the two. In this way, the pressure at the touch position can be judged by detecting the change of the capacitance value between the electrode and the conductive layer, so that the pressure-sensitive touch function can be realized.

Description

technical field [0001] The present invention relates to the field of touch technology, in particular to a touch display device and a driving method thereof. Background technique [0002] Pressure sensing technology refers to the technology that can detect external force. This technology has been used in industrial control, medical and other fields a long time ago. At present, the way to achieve pressure sensing in the display field, especially in the field of mobile phones or tablets, is to set an additional pressure-sensitive detection electrode layer in the liquid crystal display panel. This design requires changes to the structural design of the liquid crystal display panel, and the design is complicated. Moreover, the thickness of the liquid crystal display panel is increased to increase the cost. Contents of the invention [0003] Embodiments of the present invention provide a touch display device and a driving method thereof, which are used to realize a pressure-sen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/041G06F3/044
CPCG06F3/0414G06F3/0416G06F3/044G02F1/13338G02F1/1336G06F3/0412G06F2203/04105G06F3/04166G02F1/133612G02F1/133528G02F1/133603G02F1/133606G06F3/0447
Inventor 许军刘同敏沙金张大宇
Owner HEFEI BOE OPTOELECTRONICS TECH
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