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Pixel driving circuit, method, display panel and display device

A pixel drive circuit, pixel technology, applied in static indicators, instruments, etc., can solve the problems of high image quality, inability to obtain, and high aperture ratio of pixel units

Active Publication Date: 2017-02-15
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The main purpose of the present invention is to provide a pixel driving circuit, a method, a pixel circuit, a display panel and a display device, so as to solve the problems caused by the large number of TFTs and data lines used in the threshold compensation in the prior art. The high aperture ratio makes it impossible to obtain higher image quality and PPI (Pixels per inch, the number of pixels per inch)

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

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Embodiment Construction

[0108] 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.

[0109] The transistors used in all the embodiments of the present invention can be thin film transistors or field effect transistors or other devices with the same characteristics. In the embodiment of the present invention, in order to distinguish the two poles of the transistor except the gate, the first pole may be the source or the drain, and the second pole may be the drain or the source. In addition, transistors can be classified into n-type transistors ...

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Abstract

The invention provides a pixel driving circuit, a method, a display panel and a display device. The pixel driving circuit includes a first pixel driving unit and a second pixel driving unit; the first pixel driving unit includes a first driving transistor, a first storage unit and a first driving control unit; the first driving control unit is In the first compensation stage, the threshold voltage of the first driving transistor is controlled to perform jump compensation by applying a jump voltage to the data voltage; the second pixel driving unit includes a second driving transistor, a second storage unit, and a second pixel driving unit. Two drive control units; the second drive control unit applies a jump voltage to the data voltage in the second compensation stage to control the jump compensation for the threshold voltage of the second drive transistor, and controls the second The light emitting element emits light. The invention can greatly reduce the aperture ratio and cost of the pixel unit.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a pixel driving circuit, a method, a display panel and a display device. Background technique [0002] AMOLED (Active Matrix / Organic Light Emitting Diode, Active Matrix Organic Light Emitting Diode) display is one of the hot spots in the field of flat panel display research. Organic light-emitting diodes (OLEDs) have the advantages of low energy consumption, low production cost, self-illumination, wide viewing angle and fast response speed. Pixel drive circuit design is the core technical content of AMOLED display, which has important research significance. [0003] In AMOLED displays, a stable current is required to control OLED light emission. Due to the process and device aging, the threshold voltage (Vth) of the driving transistor of each pixel in the AMOLED display will drift, which causes the current flowing through each pixel OLED to change due to the change of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3233G09G3/3266G09G3/3291
CPCG09G3/3233G09G3/3291G09G2300/0426G09G2300/0465G09G2300/0819G09G2300/0842G09G2300/0861G09G2310/0262G09G2320/043G09G3/3225G09G2330/028
Inventor 杨盛际
Owner BOE TECH GRP CO LTD
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