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Pixel circuit, driving method thereof, and display substrate

A pixel circuit and drive module technology, applied to static indicators, instruments, etc., can solve the problems of inability to accurately control display grayscale and uneven brightness, and achieve the effect of avoiding uneven brightness and good linear output

Active Publication Date: 2022-02-15
BOE TECH GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the present application provides a pixel circuit, a driving method thereof, and a display substrate, which are used to solve the problem that in the prior art, because the driving thin film transistor is always in the unsaturated region during the light-emitting stage, the threshold voltage needs to be compensated, and the display gray cannot be accurately controlled. degree, the technical problem of uneven brightness is prone to occur

Method used

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

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Embodiment Construction

[0078] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0079] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the specification of the present application refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or mor...

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Abstract

The present application provides a pixel circuit, a driving method thereof, and a display substrate. The pixel circuit includes: a first light emitting device, a data current writing module, a voltage supply module, a current amplification module and a first driving module. Since the voltage supply module in the pixel circuit of the embodiment of the present application is used to store the predetermined voltage, and under the control of the signal terminal, provide the predetermined voltage to the first driving module; in addition, the first driving module is used to, after receiving the predetermined voltage, Work together with the current amplification module to output a driving current that is preset in proportion to the data current. Using the pixel circuit of the embodiment of the present application, in the light-emitting stage, the driving transistor can work in the saturation region without compensating the threshold voltage, and the circuit has a good linear output, and can accurately control the display gray scale to avoid uneven brightness The phenomenon.

Description

technical field [0001] The present application relates to the technical field of semiconductors, and specifically relates to a pixel circuit, a driving method thereof, and a display substrate. Background technique [0002] In recent years, active-matrix organic light-emitting diodes (Active-matrix organic light-emitting diode, AMOLED) are more and more used in mobile phones, tablet computers and other devices, because compared with other display technologies, it has ultra-thin, lightweight, Wide viewing angle, low power consumption, fast response, vivid colors, etc. [0003] AMOLED display driving methods mainly include current drive, voltage drive, and digital drive. Among them, current drive can effectively solve non-ideal factors such as threshold voltage drift, mobility change, and IR drop, and has become the most suitable for AMOLED display drive. drive mode. [0004] However, in the design of the current-mode AMOLED pixel drive circuit for traditional 3D display, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3233
CPCG09G3/3233G09G2320/0233
Inventor 刘伟星徐智强王铁石张春芳李小龙
Owner BOE TECH GRP CO LTD
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