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Liquid crystal display screen discharging method, liquid crystal display screen and driving chip thereof

A technology of liquid crystal display and driver chip, applied in static indicators, instruments, etc., can solve the problems of afterimage, display screen flicker, etc.

Inactive Publication Date: 2016-09-28
SHENZHEN TINNO WIRELESS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a liquid crystal display discharge method, a liquid crystal display and its driving chip, to solve the problem of screen flicker and residual image on the display screen due to liquid crystal polarization when the display screen is abnormally powered off in the prior art question

Method used

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  • Liquid crystal display screen discharging method, liquid crystal display screen and driving chip thereof
  • Liquid crystal display screen discharging method, liquid crystal display screen and driving chip thereof
  • Liquid crystal display screen discharging method, liquid crystal display screen and driving chip thereof

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no. 1 approach

[0036] see figure 1 , the first embodiment of the liquid crystal display driving method of the present invention includes the following steps:

[0037] S101: When the liquid crystal display is working, the liquid crystal display driver chip generates an operating voltage, and the operating voltage is the voltage at which the gate line circuit of the liquid crystal display is turned on.

[0038] When the smart terminal of the mobile phone or the display is turned on, the host provides the voltage source VCI and the voltage source IOVCC of the input / output port of the LCD driver chip, and the LCD driver chip provides voltage for the LCD to work.

[0039] When the liquid crystal display is working, the liquid crystal display driver chip generates an operating voltage VGH, and the operating voltage VGH is the voltage at which the gate line circuit Gate of the liquid crystal display is turned on.

[0040] When the liquid crystal display is working, the liquid crystal display drive...

no. 2 approach

[0044] see figure 2 , the second embodiment of the liquid crystal display driving method of the present invention includes the following steps:

[0045] S201: When the liquid crystal display is working, the liquid crystal display driving chip generates a working voltage, and the working voltage is the voltage at which the gate line circuit of the liquid crystal display is turned on.

[0046] S202: When the LCD driver chip detects that the operating voltage is lower than the preset voltage value, the output pin of the LCD driver chip is configured as the clock signal of the gate line circuit of the LCD, and the clock signal is used for row-by-row Scan the gate line circuit of the liquid crystal display; the LCD driver chip opens all the TFT switches controlled by the gate line circuit of the liquid crystal display by controlling the clock signal, so that the liquid crystal display can discharge.

[0047]Wherein, the output pin PIN of the liquid crystal display driver chip is ...

no. 3 approach

[0052] see image 3 , the third embodiment of the liquid crystal display driving method of the present invention includes the following steps:

[0053] S301: When the LCD screen is working, the LCD driver chip generates an operating voltage, which is the voltage at which the gate line circuit of the LCD screen is turned on;

[0054] S302: When the LCD driver chip detects that the operating voltage and the preset voltage value deviate from the preset range, the LCD driver chip outputs a control signal to turn on the switch of the gate line circuit of the LCD, so that the LCD can discharge .

[0055] The principle of the third embodiment of the liquid crystal display driving method provided by the present invention is the same as that of the first embodiment, the difference is that the preset range is increased.

[0056] see Figure 5 , the liquid crystal display driver chip 40 of the present invention includes a driver circuit 41 , a detection circuit 42 and a storage circui...

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Abstract

The invention provides a liquid crystal display screen discharging method, a liquid crystal display screen and a driving chip thereof. The method comprises steps that the liquid crystal display screen driving chip generates a work voltage when the liquid crystal display screen works, and the work voltage is a voltage for starting work of a grid line circuit of the liquid crystal display screen; when the work voltage is detected by the liquid crystal display screen driving chip to be lower than a preset voltage value, a control signal is outputted by the liquid crystal display screen driving chip to open a switch of the grid line circuit of the liquid crystal display screen so as to make the liquid crystal display screen discharge. According to the method, when the work voltage is detected by the liquid crystal display screen driving chip to be lower than the preset voltage value, the control signal is outputted by the liquid crystal display screen driving chip to open the switch of the grid line circuit of the liquid crystal display screen so as to make the liquid crystal display screen discharge, so problems of screen flashing and blurring caused by liquid crystal polarization because of short-term re-power after abnormal power off of the liquid crystal display screen can be effectively avoided.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a liquid crystal display discharge method, a liquid crystal display and a driving chip thereof. Background technique [0002] During the production process of the display module of the liquid crystal display, the display module needs to perform a lighting electrical test procedure. When a program wakes up the display module again, due to the polarization of the liquid crystal, it is easy to cause problems such as screen flicker and afterimage; there will also be abnormal power failures in the mobile terminal, for example, the battery is unplugged when the mobile phone is in normal working state, forced Restarting may cause problems such as screen flicker and afterimage on the display due to the polarization of the liquid crystal. [0003] At present, to solve the problem of screen flicker caused by the polarization of liquid crystal caused by power failure, for the display modu...

Claims

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Application Information

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IPC IPC(8): G09G3/36
CPCG09G3/36G09G2310/0248G09G2320/0257
Inventor 倪漫利邹少林于海涛
Owner SHENZHEN TINNO WIRELESS TECH
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