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Pixel circuit, display panel and driving method thereof

A pixel circuit and display panel technology, applied to static indicators, instruments, etc., can solve the problems of affecting image display effect and uneven display brightness, and achieve the effect of simple structure of pixel circuit, improvement of uniformity and elimination of influence

Active Publication Date: 2017-03-22
BOE TECH GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the process and device aging, the threshold voltage Vth of the driving transistor of the pixel circuit will be non-uniform, which will lead to the change of the current flowing through each pixel OLED, resulting in uneven display brightness, which will affect the entire display. Image display effect

Method used

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  • Pixel circuit, display panel and driving method thereof
  • Pixel circuit, display panel and driving method thereof
  • Pixel circuit, display panel and driving method thereof

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Embodiment Construction

[0033] 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 some, not all, embodiments of the present invention. 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.

[0034] An embodiment of the present invention provides a pixel circuit, such as figure 1 As shown, it includes: a reset and lighting control module 10 , a lighting control module 20 , a driving module 30 , a data writing module 40 and a lighting module 50 .

[0035] Specifically, the reset and light-emitting control module 10 is connected to the scanning signal line GL, the enabling signal terminal EM, the initial voltage terminal Vini, the driving module 30 a...

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Abstract

The embodiment of the invention provides a pixel circuit, a display panel and a driving method thereof, relates to the technical field of display and can enhance the brightness uniformity of the display panel. According to the pixel circuit, a reset and luminescence control module is used for resetting a driving module under the control of scanning signal lines, an enabling signal end and an initial voltage end; or the driving module and a luminescence module are connected under the control of the enabling signal end; the luminescence control module is used for enabling the voltage of a first voltage end to be written in a first node under the control of the enabling signal end; the driving module is used for driving the luminescence module under the control of the first voltage end and the luminescence control module when the driving module and the luminescence module are connected; a data write-in module is used for writing reference voltage in the first node under the control of the scanning signal lines or writing data voltage in the first node to perform threshold voltage compensation on the driving module; and the luminescence module is used for luminescence through driving of the module.

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 driving method thereof. Background technique [0002] Organic Light Emitting Diode (OLED) display is one of the hotspots in the current research field. Compared with Liquid Crystal Display (LCD), OLED has low energy consumption, low production cost, self-illumination, and wide viewing angle. And corresponding advantages such as fast speed. Among them, pixel circuit design is the core technical content of OLED display, which has important research significance. [0003] Unlike LCD, which uses a stable voltage to control brightness, OLED is current-driven and requires a stable current to control light emission. Due to the process and device aging, there will be non-uniformity in the threshold voltage Vth of the driving transistor of the pixel circuit, which will lead to the change of the current flowing through each pixel OLED, resu...

Claims

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Application Information

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IPC IPC(8): G09G3/3208
CPCG09G3/3208
Inventor 马占洁
Owner BOE TECH GRP CO LTD
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