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Pixel control circuit and control method thereof and display device

A pixel control and circuit technology, applied in the field of pixel control circuits and displays, can solve the problems of dark pixel light leakage and poor picture quality of the display panel, and achieve the effect of reducing pixel light leakage and improving picture quality.

Active Publication Date: 2018-01-23
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To sum up, the display panels of the prior art have light leakage from dark-state pixels, and the image quality of the display panels is poor.

Method used

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  • Pixel control circuit and control method thereof and display device
  • Pixel control circuit and control method thereof and display device
  • Pixel control circuit and control method thereof and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] Such as Figure 6a As shown, when the value of the voltage signal received by the data line is positive, the first comparator 2011 is used to compare the positive voltage received by the data line with the first preset reference voltage, and the first preset reference voltage is for the display panel to be dark state, the corresponding polarity is positive gamma voltage.

[0088] Such as Figure 6a As shown, when the positive voltage received by the data line is equal to the first preset reference voltage, VGL is output, at this time the first switch unit 401 is turned on, and the first control signal input terminal 203 inputs VGL, and VGL can be applied to the third switch The first terminal 4031 of the unit 403, the third switch unit 403 is in the closed state, even if the Gate is a high level signal at this time, since the third switch unit 403 is in the closed state, the fourth switch unit 404 is in the closed state, and the fourth The third terminal 4043 of the s...

Embodiment 2

[0096] Such as Figure 6b As shown, when the value of the voltage signal received by the data line is positive, the first comparator 2011 is used to compare the positive voltage received by the data line with the first preset reference voltage, and the first preset reference voltage is for the display panel to be dark state, the corresponding polarity is positive gamma voltage.

[0097] Such as Figure 6b As shown, when the positive voltage received by the data line is equal to the first preset reference voltage, VGH is output, at this time the first switch unit 401 is turned on, and the VGH input from the first control signal input terminal 203 can be applied to the third switch unit The first terminal 4031 of 403, the third switch unit 403 is in the closed state, even if the Gate is a high level signal at this time, since the third switch unit 403 is in the closed state, the fourth switch unit 404 is in the closed state, therefore, the fourth The pixel corresponding to the...

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Abstract

The invention provides a pixel control circuit which comprises a control signal output unit and a switch unit. An input end of the switch unit is electrically connected to an output end of the controlsignal output unit. An input end of the control signal output unit is electrically connected to the data line and is used for comparing voltage received by the data line and preset reference voltage,a first control signal is outputted if the value of the voltage received by the data line is equal to the value of the preset reference voltage, otherwise a second control signal is outputted. The switch unit is closed under the control of the first control signal and is opened under the control of the second control signal. The preset reference voltage is corresponding Gamma voltage when a display panel is in a dark state. When the pixel control circuit is used to control the pixels of the display panel to emit light, since the switch unit is closed under the control of the first control signal, the pixel light leakage of the display panel can be reduced in the dark state, and the picture quality can be improved. In addition, the invention also provides the display device and a control method of the pixel control circuit.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a pixel control circuit, a method for controlling the pixel control circuit, and a display. Background technique [0002] Thin Film Transistor-Liquid Crystal Display (TFT-LCD) is a kind of flat panel display, and has been more and more widely used due to its advantages of small size, low radiation, and low power consumption. [0003] With the continuous development of liquid crystal displays, the image quality requirements of the display panels are getting higher and higher. Currently, the manufactured display panels have dark-state light leakage, and the dark-state light leakage will affect the image quality of the display panels. [0004] Dark-state light leakage of display panels is generally divided into mechanical light leakage and pixel light leakage. In order to reduce dark-state light leakage, mechanical light leakage is generally improved by adjusting mechanical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
CPCG09G3/36G09G2310/0291G09G2320/0238G09G2320/0276G09G3/22G09G2300/08G09G2310/0256
Inventor 杨炜帆李娜
Owner BOE TECH GRP CO LTD
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