Pixel circuit, driving method thereof and display device

A pixel circuit and circuit technology, applied in static indicators, instruments, etc., can solve the problems of inability to cover changes in transistor characteristics, small compensation range, slow compensation speed, etc., to improve display quality, expand compensation range, and improve compensation speed. Effect

Active Publication Date: 2020-05-19
BOE TECH GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, the compensation range of the internal compensation is too small to cover the characteristic changes of the transistor; although the compensation range of the external compensation is wide, the compensation speed is slow

Method used

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

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Embodiment Construction

[0046] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0047] Unless otherwise defined, the technical terms or scientific terms disclosed and used in the embodiments of the present application shall have the usual meanings understood by those skilled in the field of the present invention. "First", "second" and similar words used in the embodiments of the present application do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "comprising" or "comprising" always indicate that the elements or items listed before the word cover the elements or objects listed after th...

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Abstract

The invention discloses a pixel circuit, a driving method thereof and a display device. The pixel circuit comprises a write-in sub-circuit, a light-emitting control sub-circuit, a sensing sub-circuit,a driving sub-circuit and a light-emitting element, wherein the write-in sub-circuit provides a first reference voltage signal or a data voltage signal of a data line for a first node under the control of a first scanning line; the light-emitting control sub-circuit provides a signal of a first power supply voltage end for a second node under the control of a third scanning line; the sensing sub-circuit provides a second reference voltage signal of the sensing line for a third node under the control of a second scanning line; the driving sub-circuit performs voltage compensation on the thirdnode under the control of the first node and generates a first driving current for driving the light-emitting element to emit light. Internal compensation and external compensation can be realized atthe same time so that the compensation speed can be enhanced, the compensation range can be expanded and the display quality of the display device can be enhanced.

Description

technical field [0001] The present application relates to but not limited to the field of display technology, and in particular relates to a pixel circuit, a driving method thereof, and a display device. Background technique [0002] Active-Matrix Organic Light-Emitting Diode (AMOLED) has many advantages such as ultra-thin, high color gamut, high contrast, wide viewing angle, fast response, etc., and has been applied in the display screen of some electronic devices. For the AMOLED display device, due to factors such as the instability of the driving transistor and the aging of the Organic Light-Emitting Diode (OLED), the current flowing through the OLED at different time points for the same image data voltage is different. This results in uneven display brightness across the display panel. These problems are difficult to completely overcome in the process, so various compensation techniques are used to solve them. [0003] Compensation methods can be divided into internal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3233
CPCG09G3/3233G09G2320/0233
Inventor 杨飞王糖祥
Owner BOE TECH GRP CO LTD
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