Display control circuit and its operation method

Abstract

The present invention discloses a display control circuit including a charging unit, a writing unit, a display unit, a sustaining unit, a first control unit, a second control unit, a first capacitor and a second capacitor, and a method of operating the same. The write unit is used to receive the data signal. The display unit is electrically coupled to the charging unit and the common voltage terminal for displaying the image. The sustaining unit is electrically coupled to the writing unit, the display unit and the second capacitor. The first capacitor is electrically coupled to the first control unit and the writing unit. The second control unit is electrically coupled to the charging unit and the reference level.

Description

technical field [0001] The present invention relates to a display control circuit and its operation method, especially to a liquid crystal display control circuit and its operation method. Background technique [0002] In the field of liquid crystal display, in a display control circuit (such as a pixel control circuit of a liquid crystal display), a driving transistor as a source follower can control whether a data voltage is written into a liquid crystal capacitor. However, the driving transistor is prone to aging with long-term use, which affects the gray scale accuracy of the liquid crystal display. [0003] Currently, a six-transistor-two-capacitor (also known as 6T2C) structure display control circuit is available in the field, which can detect and compensate the threshold voltage drift of the transistor of the source follower, thereby alleviating the influence of transistor aging. The display control circuit of the 6T2C structure includes at least six transistors and...

AI Technical Summary

Problems solved by technology

The above-mentioned 6T2C structure and 6T3C structure display control circuits are relatively complex in structure, and the number of components and signal lines is too large, resulting in a low aperture ratio and poor light transmission effect.

Therefore, better solutions are still needed in the liquid crystal display field to increase the aperture ratio, simplify the circuit structure, reduce the number of components and signal lines, and avoid poor gray scale accuracy caused by transistor aging.

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