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Pixel circuit, display panel and display device

A pixel circuit and display panel technology, which is applied in the field of pixel circuits, display panels and display devices, can solve the problems of limited free space of pixel units, occupied space, and limit the simultaneous production of embedded touch panel circuits, etc., to solve the problem of threshold voltage Effects of drift, number reduction, and IC cost reduction

Active Publication Date: 2014-10-08
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the TSP sensor and driving circuit are superimposed on the AMOLED pixel, a certain number of driving circuit TFTs need to be added, which requires additional space for a certain pixel unit, and the free space in the pixel unit is limited, which greatly limits the embedded Simultaneous production of touch panel circuit and AMOLED drive circuit

Method used

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  • Pixel circuit, display panel and display device
  • Pixel circuit, display panel and display device
  • Pixel circuit, display panel and display device

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Embodiment Construction

[0028] The specific implementation manners of the present invention will be further described below in conjunction with the drawings and examples. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0029] An embodiment of the present invention provides a pixel circuit, such as figure 2 shown, including:

[0030] Pixel compensation module 100, light emitting module 200 and touch detection module;

[0031] Wherein, the pixel compensation module 100 includes a first switching unit T1, a second switching unit T2, a third switching unit T3, a fourth switching unit T4, a fifth switching unit T5, a pixel driving unit DT1, and an energy storage unit C1, wherein, The first end of the first switching unit T1 is connected to the working voltage line Vdd, the other end is connected to the input end of the pixel driving unit DT1, the first end of the fifth swit...

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Abstract

The invention provides a pixel circuit, a display panel and a display device. The pixel circuit comprises a pixel compensation module, a light-emitting module and a touch detection module. The provided pixel circuit integrates the pixel compensation module and the touch detection module, and the pixel compensation module and the touch detection module share a data voltage line and scanning signal lines. Therefore, the number of signal circuits can be reduced, and accordingly, the pixel pitch is narrowed substantially, the IC cost is reduced, and higher pixel density is obtained. Meanwhile, in the pixel circuit, working current flowing through an electroluminescence unit is free from the effect of threshold voltage of a corresponding drive transistor, and the problem that display brightness is not uniform due to threshold voltage shift of the drive transistor can be solved.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a pixel circuit, a display panel and a display device. Background technique [0002] With the rapid progress of display technology, display devices with touch function are gradually becoming more and more popular due to their advantages such as visual operation. According to the relative positions of the touch panel and the display panel, the existing display devices with touch function can generally be classified into two types: on-cell touch panels and in-cell touch panels. Compared with the surface touch panel, the in-cell touch panel has thinner thickness and higher light transmittance. [0003] As for the existing display devices, Organic Light Emitting Diode (OLED) is a current-type light-emitting device, because of its self-illumination, fast response, wide viewing angle and the ability to be fabricated on a flexible substrate. and other characteristics and are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32G09G3/3233
CPCG09G3/32G09G3/3233G09G2300/0819G09G2300/0842G09G2300/0861G09G2300/0866G09G2310/0262G09G2320/043G09G2320/045
Inventor 杨盛际
Owner BOE TECH GRP CO LTD
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