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A pixel circuit and display panel

A technology of pixel circuit and electrical contact, which is applied in the field of display and can solve problems such as color shift of the display panel

Active Publication Date: 2019-02-05
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a pixel circuit and a display panel, which are used to improve the problem of color shift in the display panel caused by high temperature in the prior art

Method used

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  • A pixel circuit and display panel
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  • A pixel circuit and display panel

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Embodiment Construction

[0045] The specific implementation manners of the pixel circuit and the display panel provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0046] An embodiment of the present invention provides a pixel circuit, such as Figure 1a-Figure 1c As shown, it may include: a reset module 01, a drive module 02, a switch module 03, a control module 04, a write module 05, a compensation module 06, an adjustment module 07 and a light emitting device OLED; wherein,

[0047] The control terminal of the reset module 01 is connected to the reset signal terminal Reset, the input terminal is used to input the initialization signal Vinit, and the output terminal is connected to the first node P1;

[0048] The control terminal of the driving module 02 is connected to the first node P1, the input terminal is used to input the power signal Vdd, and the output terminal is connected to the second node P2;

[0049] The co...

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Abstract

The present invention discloses a pixel circuit and a display panel. During the reset stage, the compensation stage and the light-emitting stage, a reset module, a driving module, a switch module, a control module, a writing module and a compensation module in the pixel circuit are driven to complete corresponding functions under the control of respective control ends, so that a light-emitting device is normally driven to emit the light. Meanwhile, the voltage signal of the first input end / the third node of the compensation module is adjusted by an adjustment module. Furthermore, the voltage of the control end of the driving module is adjusted according to the voltage signal of the first input end / the third node of the compensation module. Therefore, the increasing condition of a driving current outputted by the driving module along with the temperature rising condition can be reduced or even eliminated. As a result, the color offset problem of the display panel caused by the high temperature can be improved. The white balance of the display panel at different temperatures can be realized.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a pixel circuit and a display panel. Background technique [0002] With the rapid development of display technology in recent years, Organic Light Emitting Diode (OLED) has become one of the hot spots in the field of flat panel display research. More and more active matrix organic light emitting diodes (Active Matrix Organic Light Emitting Diode, AMOLED) display panels entered the market. Compared with the traditional thin film transistor liquid crystal display panel (Thin Film Transistor Liquid Crystal Display, TFTLCD), the AMOLED display has the advantages of wide color gamut, fast response speed, wide viewing angle, and foldability. [0003] However, after a high-temperature reliability test on the AMOLED display, it was found that as the temperature increases, the mobility of the driving transistor that drives the OLED to emit light will also increase, which will in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3233
CPCG09G3/3233
Inventor 晏荣建徐映嵩杨一帆曹鹏鲍建东朴春键
Owner BOE TECH GRP CO LTD