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A pixel circuit, its driving method, and a display device

A driving method and pixel circuit technology, which can be used in static indicators, instruments, etc., to solve the problem of uneven brightness of the display screen.

Active Publication Date: 2021-03-02
BOE TECH GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a pixel circuit, its driving method, and a display device, which can improve the problem of uneven brightness of the display screen caused by threshold voltage drift and voltage drop on the power supply line

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  • A pixel circuit, its driving method, and a display device
  • A pixel circuit, its driving method, and a display device
  • A pixel circuit, its driving method, and a display device

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Embodiment Construction

[0028] 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.

[0029] An embodiment of the present invention provides a pixel circuit, such as figure 2 As shown, it includes a data writing subcircuit 10 , a compensation subcircuit 20 , a lighting control subcircuit 30 , a driving subcircuit 40 and a lighting subcircuit 50 .

[0030] Specifically, the data writing sub-circuit 10 is connected to the first signal terminal S1, the first voltage terminal V1 and the first point A, and is used to transmit the signal of the firs...

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Abstract

The invention provides a pixel circuit, a driving method thereof, and a display device, which relate to the field of display technology and can improve the problem of uneven brightness of a display screen caused by threshold voltage drift and voltage drop on a power supply line. The pixel circuit includes a data writing sub-circuit connected to the first signal terminal, the first voltage terminal and the first point for transmitting the signal of the first voltage terminal to the first point; a compensation sub-circuit connected to the second signal terminal and the driving sub-circuit The circuit is used to compensate the threshold voltage of the driving sub-circuit; the light-emitting control sub-circuit is connected to the enable signal terminal, the driving sub-circuit and the light-emitting sub-circuit, and is used to connect the driving sub-circuit to the light-emitting sub-circuit; the driving sub-circuit also Connect the first point, the second voltage terminal, and the light-emitting control subcircuit to drive the light-emitting subcircuit to emit light under the control of the first point and the light-emitting control subcircuit after compensation of the threshold voltage; the light-emitting subcircuit also Connect to the third voltage terminal for emitting light.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a pixel circuit, a driving method thereof, and a display device. 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] The OLED drive circuit in the prior art such as figure 1 As shown, since the driving transistor Td and OLED are connected in series, the driving current I of the driving transistor Td oled The value of can determine the brightness produced by the OLED device. Drive current I oled That is, the current flowing through the driving transistor Td can be expressed as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3258
CPCG09G3/3258G09G2320/0233
Inventor 殷新社
Owner BOE TECH GRP CO LTD
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