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Shutdown afterimage elimination circuit, control method thereof, and liquid crystal display device

A technology for liquid crystal display devices and after-image after power-off, applied to static indicators, instruments, etc., can solve problems such as after-image after power-off, insufficient charge release, etc., and achieve the effect of improving elimination, avoiding residual charge, and prolonging the opening time

Active Publication Date: 2022-04-12
FUZHOU BOE OPTOELECTRONICS TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, an embodiment of the present invention provides a power-off afterimage elimination circuit and its control method, and a liquid crystal display device, the main purpose of which is to solve the problem of power-off afterimage caused by insufficient release of charges stored in the liquid crystal display device after shutdown

Method used

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  • Shutdown afterimage elimination circuit, control method thereof, and liquid crystal display device
  • Shutdown afterimage elimination circuit, control method thereof, and liquid crystal display device
  • Shutdown afterimage elimination circuit, control method thereof, and liquid crystal display device

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Embodiment 1

[0036] Such as figure 2 , image 3 As shown, Embodiment 1 of the present invention proposes a power-off afterimage elimination circuit, and the power-off afterimage elimination circuit includes:

[0037] A control module 10, a charging and discharging module 20 and a level shifting module 30;

[0038] The control module 10 is configured to conduct the pull-up control signal terminal XON with the ground terminal under the control of the shutdown signal of the liquid crystal display device 40, and output a conduction control signal to the charging and discharging module 20, and to the The level conversion module 30 outputs the pull-high control signal;

[0039]The charging and discharging module 20 is configured to provide a high-level voltage signal to the level conversion module 30 under the control of the conduction control signal;

[0040] The level conversion module 30 is configured to output a high-level voltage signal to the gate of the thin film transistor in the liq...

Embodiment 2

[0050] Such as Figure 4 As shown, Embodiment 2 of the present invention proposes a control method of a power-off afterimage elimination circuit, and the control method of the power-off afterimage elimination circuit includes:

[0051] S1: The control module 10 conducts the pull-up control signal terminal XON with the ground terminal under the control of the shutdown signal of the liquid crystal display device 40, and outputs a conduction control signal to the charging and discharging module 20, and outputs a pull-up control to the level conversion module 30 Signal;

[0052] S2: The charging and discharging module 20 provides a high-level voltage signal to the level conversion module 30 under the control of the conduction control signal;

[0053] S3: the level conversion module 30 is configured to output a high-level voltage signal to the gate of the thin film transistor in the liquid crystal display device 40 under the control of the pull-high control signal.

[0054] Speci...

Embodiment 3

[0063] Embodiment 3 of the present invention proposes a liquid crystal display device 40 , the liquid crystal display device 40 includes: the above-mentioned power-off residual image elimination circuit.

[0064] Specifically, the structure and working principle of the power-off afterimage elimination circuit are as described in the above-mentioned embodiments, and will not be repeated here. The liquid crystal display device 40 can be an electronic device with a display function such as a liquid crystal display panel, a liquid crystal TV, a liquid crystal display, a mobile phone, and a tablet computer.

[0065] An embodiment of the present invention proposes a liquid crystal display device. After the liquid crystal display device is turned off, the control module can control the pull-down high control signal terminal to always be connected to the ground terminal, that is, the pull-high control signal terminal can always be at a low level after shutdown. state, to control the l...

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Abstract

The invention discloses a power-off afterimage elimination circuit, a control method thereof, and a liquid crystal display device, which relate to the field of display technology and solve the problem of power-off afterimages caused by insufficient release of charge stored in the liquid crystal display device after shutdown. The main technical solution of the present invention is: comprising: a control module, a charging and discharging module, and a level shifting module; and output the conduction control signal to the charge and discharge module, and output the pull-high control signal to the level conversion module; the charge and discharge module is used to send The level conversion module provides a high-level voltage signal; the level conversion module is used to output a high-level voltage signal to the gate of the thin film transistor in the liquid crystal display device under the control of the pull-up control signal .

Description

technical field [0001] The invention relates to the field of display technology, in particular to a power-off afterimage elimination circuit, a control method thereof, and a liquid crystal display device. Background technique [0002] Liquid crystal displays (Liquid Crystal Displays, LCDs) have been used in electronic devices including mobile phones, computers, and televisions. A liquid crystal display generally includes an array substrate and a color filter substrate disposed opposite to each other, and a liquid crystal layer disposed between the array substrate and the color filter substrate. During LCD display, the rotation of liquid crystal molecules is controlled by applying voltages to the pixel electrodes on the array substrate and the common electrodes on the color filter substrate respectively. However, organic LCDs have capacitance, so part of the charge will be stored on the pixel electrodes. If the charges stored in the LCD are not effectively released, it will ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36
CPCG09G3/3648G09G2320/0257
Inventor 陈芪飞李盼盼鹿堃周星柏玲徐迪徐东亮任亮亮刘晓锋王阔卢景洲宋冠男马华平
Owner FUZHOU BOE OPTOELECTRONICS TECH CO LTD
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