Liquid crystal display screen for eliminating ghost images and display device thereof

Abstract

The present invention provides a liquid crystal display screen for eliminating ghost images and a display device thereof. The display device comprises a timer controller, a power supply manager, a high and low level conversion chip, and a grid drive circuit, the timer controller is used to transmit a first starting square wave signal and multiple frames of signals to the grid drive circuit, the power supply manager is used to send a positive drive voltage to the grid drive circuit as the conductive voltage of the grid drive circuit and to send a negative drive voltage to the high and low level conversion chip, the timer controller is also used to send a second starting square wave signal to the high and low level conversion chip, the high and low level conversion chip is used to generate a drive square wave signal based on the negative driving voltage and the second starting square wave signal and transmits the drive square wave signal to the grid drive circuit as the off voltage of the grid drive circuit, and the duration time period of the high level of the drive square wave signal is located in a blank interval of each frame of signal to make the grid drive circuit discharge in the blank interval.

Description

technical field [0001] The invention relates to the display field, in particular to a liquid crystal display screen and a display device thereof. Background technique [0002] With the development of technology, the application of liquid crystal displays is becoming more and more extensive, and consumers have higher and higher requirements for liquid crystal displays. In the process of liquid crystals, since the liquid crystals cannot be completely purified, it is inevitable that there will be residues in them. Some mobile ions, when a voltage is applied, these mobile ions will be attracted by the opposite polarity charge on the electrode and move towards the electrode. The average voltage value of the difference is 0, and the movement of the mobile ions to the two electrodes will cancel each other out, and the distance between them will also be 0. If the average value of the two applied voltage differences is not 0, the ions will tend to move to one of the electrodes. Move...

AI Technical Summary

Problems solved by technology

[0002] With the development of technology, the application of liquid crystal displays is becoming more and more extensive, and consumers have higher and higher requirements for liquid crystal displays. In the process of liquid crystals, since the liquid crystals cannot be completely purified, it is inevitable that there will be residues in them. Some mobile ions, when a voltage is applied, these mobile ions will be attracted by the opposite polarity charge on the electrode and move towards the electrode. The average voltage value of the difference is 0, and the movement of the mobile ions to the two electrodes will cancel each other out, and the distance between them will also be 0. If the average value of the two applied voltage differences is not 0, the ions will tend to move to one of the electrodes. Move all the way to the interface between the liquid crystal and the alignment film, and be captured on this interface, these charged ions will form an electric field with the opposite polarity charge on the other electrode, and this internal electric field will affect the alignment and transmittance of the liquid crystal together with the external electric field , so that the transmittance-voltage relationship curve changes, and the arrangement of the liquid crystal will also change due to the internal electric field when the applied voltage difference is 0. In this way, after a long time, it will cause afterimages, which will affect the viewing effect of consumers.

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