Temperature compensating circuit and method and liquid crystal display

Abstract

The invention discloses a temperature compensating circuit and method and a liquid crystal display. The temperature compensating circuit and method and the liquid crystal display are applied to a display panel. The temperature compensating circuit comprises a temperature detecting unit, a temperature converting unit and a compensating signal generating unit, wherein the temperature detecting unit is used for detecting a temperature variation, the temperature converting unit is used for converting the detected temperature variation into a voltage compensation variation, and the compensating signal generating unit is used for processing the voltage compensation variation so as to generate a compensating signal used for temperature compensation of the public electrode voltage of the display panel. According to the temperature compensating circuit and method, the public electrode voltage of the display panel can be adjusted in real time when the temperature changes, the public electrode voltage is made to be on the midpoint between positive gray scale change and negative gray scale change, in this way, the number of flickers generated when the polarity of the display panel is reversed is kept the smallest, an image can be displayed more stably, and the visual experience of a viewer is improved.

Description

Technical field [0001] The present disclosure relates to the field of liquid crystal display, and in particular to a temperature compensation circuit for a liquid crystal display panel, a temperature compensation method, and a liquid crystal display including the temperature compensation circuit. Background technique [0002] In current liquid crystal display panels, a polarity inversion method is usually used to drive liquid crystal molecules. There are various polarity inversion methods, such as frame inversion, column inversion, row inversion, and dot inversion. However, when the polarity is inverted, the screen displayed on the panel may flicker, which is most likely to occur in frame inversion. See figure 1 When the frame is inverted, the entire picture is of the same polarity. Because the positive and negative pictures alternately appear, the two frames before and after are reversed, and the actual voltage on the pixel is the difference between the voltage on the pixel ele...

AI Technical Summary

Problems solved by technology

[0003] Therefore, when the temperature of the liquid crystal display panel changes, the voltage of its common electrode will usually shift, which will cause flickering in the picture displayed on the liquid crystal display panel.

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