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Bias compensation circuit of transistor, driving method of bias compensation circuit and display substrate

A technology of compensation circuit and driving method, which is applied in static indicators, instruments, etc., and can solve problems such as bias voltage

Active Publication Date: 2021-07-23
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention at least partially solves the problem of the bias voltage of the drive transistor in the pixel circuit of the existing liquid crystal display panel during the display process, and provides a transistor bias compensation circuit capable of improving the bias voltage of the drive transistor in the pixel circuit

Method used

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  • Bias compensation circuit of transistor, driving method of bias compensation circuit and display substrate
  • Bias compensation circuit of transistor, driving method of bias compensation circuit and display substrate
  • Bias compensation circuit of transistor, driving method of bias compensation circuit and display substrate

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Embodiment 1

[0035] Such as image 3 and Figure 4 As shown, this embodiment provides a transistor bias compensation circuit, which is used for bias compensation of the driving transistor (TFT) in the pixel circuit in the array substrate. The array substrate includes a plurality of pixel circuits distributed in an array, and each row The pixel circuit is connected to a gate line Gate signal, and each column of pixel circuits is connected to a data line Data signal. The bias compensation circuit of the transistor includes:

[0036] A plurality of first compensation units 1, each first compensation unit 1 is connected to a data line Data signal, a first control line SW1, and a first compensation signal terminal DO / DE, and the first compensation unit 1 responds to the first control line SW1 controlling to write the first compensation signal of the first compensation signal terminal DO / DE into the pixel circuit corresponding to the data line Data signal;

[0037] A plurality of second compen...

Embodiment 3

[0060] This embodiment provides a display substrate, including:

[0061] A plurality of pixel circuits distributed in an array, the pixel circuits in each row are connected to a gate signal, and the pixel circuits in each column are connected to a data line Data signal;

[0062] The transistor bias compensation circuit in Embodiment 1.

[0063] Through the function of the transistor bias compensation circuit, compensation signals can be respectively written into the data line Data signal and the gate line Gatesignal to compensate the bias voltage of the drive transistor in the pixel circuit, thereby ensuring normal display of the array substrate.

[0064] Preferably, the display substrate has a display area for display and a non-display area for wiring, and the bias compensation circuit of the transistor is located in the non-display area.

[0065] Wherein, that is to say, the bias voltage compensation circuit of the transistor can be located on the circuit board close to the...

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Abstract

The invention provides a bias compensation circuit of a transistor, a driving method of the bias compensation circuit and a display substrate, belongs to the technical field of display, and can at least partially solve the bias of a driving transistor in a pixel circuit of an existing liquid crystal display panel in the display process. The bias compensation circuit of the transistor comprises a plurality of first compensation units, wherein each first compensation unit is connected with a data line, a first control line and a first compensation signal end, and in response to control of the first control line, writes a first compensation signal of the first compensation signal end into a pixel circuit corresponding to the data line; and a plurality of second compensation units, wherein each second compensation unit is connected with one gate line, a second control line and a second compensation signal end, and in response to control of the second control line, writes a second compensation signal of the second compensation signal end into a pixel circuit corresponding to the gate line.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to a transistor bias compensation circuit, a driving method thereof, and a display substrate. Background technique [0002] In the liquid crystal display panel, since the liquid crystal display layer has an unsteady structure, it is necessary to reduce the refresh frequency during the display process to ensure that the liquid crystal display panel can display normally. [0003] However, when the refresh frequency of the liquid crystal display panel is low (such as 1HZ), since each frame needs to scan more rows of pixels, in the normal refresh mode of each frame, multiple rows of gate lines are input with normal voltages to scan sequentially, so that The driving transistor is turned on row by row, and then enters the power saving mode, so that the driving transistor is in a biased state for a long time, that is, the transistor in the pixel driving circuit is in a biased ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
CPCG09G3/3611
Inventor 许睿田超李少波王敏王哲龚猛
Owner BOE TECH GRP CO LTD
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