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

A technology of pixel circuits and circuits, applied in the fields of pixel circuits, display panels and display devices, capable of solving problems such as uneven display

Inactive Publication Date: 2018-11-02
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, an embodiment of the present invention provides a pixel circuit, a driving method thereof, an organic electroluminescence display panel and a display device to solve the problem of uneven display in the prior art

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

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Embodiment Construction

[0048] Embodiments of the present invention provide a pixel circuit, a driving method thereof, an organic electroluminescent display panel, and a display device. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. 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.

[0049] The shapes and sizes of the components in the drawings do not reflect the real scale, but are only intended to schematically illustrate the content of the present invention.

[0050] A pixel circuit provided by an embodiment of the present invention, such as figure 1 As shown,...

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Abstract

The invention discloses a pixel circuit, a driving method thereof, a display panel and a display device, wherein the pixel circuit comprises a driving transistor, a data write-in sub-circuit, an initializing sub-circuit, a voltage pre-write-in sub-circuit, a threshold compensating sub-circuit, a first light emitting control sub-circuit, a second light emitting control sub-circuit, a capacitor anda light emitting device. Because before light emitting of the light emitting device in the pixel circuit, the voltage pre-write-in sub-circuit pre-stores the voltage of the voltage end of a light emitting power supply into a capacitor, the magnitude of the actual light emitting current is related with the voltage of the voltage end of the light emitting power supply though the light emitting current is driven by a first voltage source, and the magnitude is irrelevant with voltage of the first voltage source. The pixel circuit, the driving method, the display panel and the display device have advantages of eliminating influence of voltage drop to displaying of the light emitting device in a light emitting period of the first voltage source, and improving non-uniform displaying of an OLED display screen.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a pixel circuit, a driving method thereof, a display panel and a display device. Background technique [0002] Organic Light Emitting Diode (OLED) is one of the hot spots in the field of flat panel display research today. Compared with liquid crystal displays, OLED has the advantages of low energy consumption, low production cost, self-illumination, wide viewing angle and fast response speed. , OLEDs have begun to replace traditional Liquid Crystal Displays (LCDs) in the field of flat panel displays such as mobile phones, PDAs, and digital cameras. Among them, pixel circuit design is the core technical content of OLED display, which has important research significance. [0003] In the existing pixel circuit, in the conventional circuit, when the OLED light-emitting control signal is turned on, the voltage source VDD signal is input. Since the VDD line is arranged in a whole row...

Claims

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Application Information

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IPC IPC(8): G09G3/3208
CPCG09G3/3208G09G2320/0233G09G3/3233G09G2300/0842G09G2300/0861G09G2320/0223G09G3/3266G09G3/3275G09G2300/0426G09G2300/043G09G2300/0439H10K59/131
Inventor 高雪岭姚继开彭宽军羊振中
Owner BOE TECH GRP CO LTD
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