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Touch Display Device

一种触摸显示、触摸电极的技术，应用在仪器、电数字数据处理、数据处理的输入/输出过程等方向，能够解决电极困难、触摸感测精度和灵敏度劣化等问题，达到减小噪声的效果

Active Publication Date: 2021-04-30
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there are many substantial difficulties in arranging the electrodes for touch sensing on the display panel
In addition, there is a problem that the accuracy and sensitivity of touch sensing will be degraded due to the parasitic capacitance formed between the electrodes for display driving and the electrodes for touch sensing

Method used

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Examples

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Embodiment Construction

[0026] In the following description of examples or embodiments of the invention, reference is made to the accompanying drawings, in which are shown by way of illustration specific examples or embodiments in which they can be practiced, and in which like reference numerals may be used And symbols designate the same or similar components even if they are shown in drawings that are different from each other. Furthermore, in the following description of examples or embodiments of the present invention, when it is determined that detailed descriptions of well-known functions and components referred to herein would rather obscure the subject matter in some embodiments of the present invention, the detailed descriptions thereof will be omitted. Terms such as "comprising", "having", "comprising", "consisting" used herein are generally intended to allow addition of other elements unless these terms are used together with the term "only".

[0027] Terms such as "first," "second," "A," "...

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Abstract

The present disclosure relates to a touch display device. According to the touch display device, by disposing a touch electrode and a touch planarization layer between a substrate and a thin film transistor, a touch sensing function can be implemented without affecting the disposing of components for display driving. Further, by disposing a shielding electrode to which a constant voltage or a signal equal to a touch driving signal is applied between the touch electrode and a light emitting element, a noise of a touch sensing signal caused by display driving can be reduced and the performance of touch sensing performed together with the display driving can be improved. The touch display device includes: a substrate; a plurality of thin film transistors disposed on the substrate; a plurality of light emitting elements disposed above the thin film transistors; a plurality of touch electrodes disposed on the substrate and located below the thin film transistors; at least one sheilding electrode located above the touch electrode and below the thin film transistor and disposed in an area including an area overlapping at least a portion of the at least one touch electrode.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to Korean Patent Application No. 10-2019-0134636 filed with the Korean Intellectual Property Office on October 28, 2019, which is hereby incorporated by reference in its entirety. technical field [0003] The present invention relates to a touch display device. Background technique [0004] With the development of the information society, the demand for various display devices that display images has increased. Recently, various display devices have been developed and used, such as liquid crystal display devices, organic light emitting display devices, quantum dot display devices, and the like. [0005] In order to provide users with more various functions, some display devices capable of touch sensing provide functions for detecting a user's touch touching a display panel and then processing user input based on the detected information. [0006] For example, in a state where a plural...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041G06F3/044
CPCG06F3/04164G06F3/0418G06F3/0446G06F3/0443G06F2203/04112G06F2203/04107G06F3/0412G06F3/04166G06F3/0448G06F3/0445
Inventor 李挥得朴容赞金泰润李杨植
Owner LG DISPLAY CO LTD
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