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A display driving circuit board, its driving method and display device

A display drive and display device technology, which is applied to display devices, transmission devices, friction transmission devices, etc., and can solve problems such as flickering and deterioration of display panels

Active Publication Date: 2020-03-10
SHANGHAI AVIC OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a display driving circuit board, its driving method, and a display device to solve the problem in the prior art that the display panel flickers and deteriorates when it is used with frequency conversion

Method used

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  • A display driving circuit board, its driving method and display device
  • A display driving circuit board, its driving method and display device
  • A display driving circuit board, its driving method and display device

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Embodiment Construction

[0027] The specific implementation manners of the display driving circuit board, its driving method and the display device provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] A display driving circuit board provided by an embodiment of the present invention, such as image 3 As shown, it may specifically include: a timing control circuit 100, a power management circuit 200, a display refresh rate detection unit 300, and a common voltage pre-storage compensation unit 400; wherein,

[0029] A timing control circuit 100, configured to output a frame start signal (STV) A at a set display refresh rate;

[0030] The display refresh frequency detection unit 300 is electrically connected to the timing control circuit 100 and the common voltage pre-storage compensation unit 400 respectively, and is used to detect the display refresh frequency of the frame start signal A output by the timing control...

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Abstract

A display drive circuit board, its driving method and a display device provided by embodiments of the present invention adopt a method of adding a display refresh frequency detection unit and a common voltage pre-storage compensation unit to the display drive circuit board; through the display refresh frequency detection unit Detect the display refresh frequency of the frame start signal output by the timing control circuit, and then the common voltage pre-stored compensation unit determines the display refresh frequency output by the display refresh frequency detection unit based on the pre-stored correspondence between each display refresh frequency and each common voltage. corresponding public voltage, and controls the power management circuit to output a public voltage corresponding to the display refresh frequency, so that the display driver circuit board can adjust the output public voltage in real time to the best common voltage that matches the display refresh frequency according to changes in the display refresh frequency. The voltage is conducive to improving the stability and consistency of the display panel, and can alleviate the flicker problem, thereby improving the display quality of the display panel.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a display driving circuit board, a driving method thereof and a display device. Background technique [0002] Currently, in liquid crystal display panels, such as figure 1 As shown, it includes: a display panel Panel, a display driver circuit board PCB connected to the display panel Panel, and a plurality of source driver chips IC1, IC2, IC3, and IC4 bound to the frame of the display panel Panel through the chip-on-film COF . Among them, the display driving circuit board PCB includes: a timing control circuit (Tcon) and a power management circuit (DC-DC); Output the frame start signal (STV) A; the power management circuit is used to determine the optimal common voltage (Vcom) according to the characteristics of the display panel, and output a fixed common voltage B to each source driver chip IC1, IC2, IC3, IC4. [0003] With the continuous development of high-resolution (UHD,...

Claims

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Application Information

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IPC IPC(8): G09G3/36G09G3/20
CPCG09G3/20G09G3/36G09G3/3611G09G2330/021G09G2340/0435G09G3/3648G09G3/3655G09G3/3696G09G2320/0247F16H19/06G02F1/133305G09F19/02
Inventor 黄正园王徐鹏樊树全王善荣
Owner SHANGHAI AVIC OPTOELECTRONICS
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