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Source drive circuit, voltage control method for its output signal, and display device

A technology of output signal and source drive, applied to static indicators, instruments, etc., can solve the problems of low charging efficiency and long charging time, and achieve the effect of improving charging efficiency and reducing charging time

Inactive Publication Date: 2020-11-06
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of long charging time and low charging efficiency when the source drive circuit charges the pixel unit in the related art, the present invention provides a voltage control method for the source drive circuit and its output signal, and a display device

Method used

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  • Source drive circuit, voltage control method for its output signal, and display device
  • Source drive circuit, voltage control method for its output signal, and display device
  • Source drive circuit, voltage control method for its output signal, and display device

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Embodiment Construction

[0050] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0051] figure 1 is a schematic structural diagram of a display device provided by an embodiment of the present invention, from figure 1It can be seen from the figure that the display device generally includes a display panel 10 , a timing controller 20 , a gate driving circuit 30 and a source driving circuit 40 . The timing controller 20 is respectively connected to the gate drive circuit 30 and the source drive circuit 40 for controlling the working states of the gate drive circuit 30 and the source drive circuit 40 . The gate driving circuit 30 is respectively connected to each row of pixel units in the display panel 10 for performing row-by-row scanning of multiple rows of pixel units in the display panel 10 . The source driving c...

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Abstract

The invention discloses a source drive circuit and a voltage control method and display device for output signals of the source drive circuit, and belongs to the technical field of displays. The voltage control method for the output signals of the source drive circuit includes the steps of detecting whether or not the level of a polarity control signal transmitted through a time schedule controller jumps; when the level of the polarity control signal jumps, if the voltage of the output signal is a positive gamma reference voltage, increasing the voltage of the output signal; when the level of the polarity control signal jumps, if the voltage of the output signal is a negative gamma reference voltage, reducing the voltage of the output signal. The method can improve the charging efficiency and reduce the charging time.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a voltage control method for a source drive circuit and an output signal thereof, and a display device. Background technique [0002] A display device may generally include a display panel and a driving circuit for driving the display panel. The driving circuit may include a timing controller (English: Timing controller; TCON for short), a gate driving circuit and a source driving circuit. [0003] In the related art, the source driving circuit can convert the digital signal input by TCON into an analog signal corresponding to the gray scale voltage according to the gamma reference voltage and output it to each pixel unit of the display panel. At present, in order to improve the display effect of the display device, the display panel is generally driven in a frame inversion manner, that is, the polarity of the voltage stored in each pixel unit in the display panel is opposite i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/20
CPCG09G3/20G09G2310/0243G09G2320/0673G09G2360/08
Inventor 刘志友许益祯
Owner BOE TECH GRP CO LTD