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Touch display device and driving method thereof

A technology of touch display device and touch electrode, which is applied in the direction of instruments, semiconductor devices, computing, etc., can solve the problems of pressure detection accuracy limitation, large assembly tolerance, etc., and achieve the effect of improving accuracy and reducing manufacturing cost

Active Publication Date: 2019-06-04
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current design scheme needs to add an additional detection mechanism to the display device, and due to the large assembly tolerance, this design scheme has a great limitation on the accuracy of pressure detection

Method used

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  • Touch display device and driving method thereof
  • Touch display device and driving method thereof
  • Touch display device and driving method thereof

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Embodiment Construction

[0025] 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 part of the embodiments of the present invention, not all of them. 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.

[0026] At present, most smart phones, PADs or digital cameras use OLED display screens for interface display, especially many smart phones use AMOLED display screens (these devices have image display functions, and these devices are referred to as display devices hereinafter). Taking a smartphone using an AMOLED display as an example, a brief introduction to the structure of the display device is given:

[0027] Please refer to figure 1 , figur...

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Abstract

The invention discloses a touch display device and a driving method thereof. Wherein, the touch display device includes: a metal layer and multiple groups of organic light-emitting units, each group of organic light-emitting units includes a plurality of organic light-emitting units, and the organic light-emitting units in each group of organic light-emitting units share a cathode, and the cathode are insulated from each other; wherein, each cathode and the metal layer form a capacitive pressure sensor. Through the present invention, since the touch display device does not need to add an additional detection mechanism, there is no large assembly tolerance, and the accuracy of the touch pressure detection by the touch display device can be improved.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a touch display device and a driving method thereof. Background technique [0002] Compared with LCD (Liquid Crystal Display, liquid crystal display), OLED (Organic Light-Emitting Diode, organic light-emitting diode) has the advantages of low energy consumption, low production cost, self-illumination, wide viewing angle and fast response speed. At present, OLED has begun to replace traditional LCD, especially AMOLED (Active Matrix OLED, active matrix) in display fields such as mobile phones, tablet computers, PDA (Personal Digital Assistant, also known as PDA) and digital cameras. Organic Light Emitting Diode) has become one of the hotspots in the field of flat panel display research today, and the design of pixel driving circuit is the core technical content of AMOLED display, which has important research significance. [0003] Force Touch (pressure sensing) technology...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/32G06F3/041
CPCG06F3/041H10K59/40H10K59/8052G06F3/04166G06F3/0447G06F3/0445G06F3/04184H10K59/1216H10K50/82G06F3/044
Inventor 王鹏鹏董学王海生陈小川丁小梁刘英明杨盛际赵卫杰李昌峰刘伟刘红娟
Owner BOE TECH GRP CO LTD