Au Optronics Corporation

Chung-Shen Cheng

Chao-Ching Hsu

Mu-Lin Tung

A level shift circuit includes a control logic circuit, a plurality of level shift output buffers and a plurality of charge sharing circuits. The control logic circuit receives input clock pulse signals and a charge sharing signal and acquires voltage level information of each received signal. Each output buffer amplifies a corresponding input clock pulse signal and determines whether to output a signal according to the acquired information of the charge sharing signal. Each charge sharing circuit determines whether to be turned on according to the acquired information of a corresponding input clock pulse signal. When a charge sharing circuit is turned on, the output terminal of a corresponding output buffer and a predetermined voltage level are coupled to each other by the charge sharing circuit, so as to perform the charge sharing operation. Furthermore, a corresponding liquid crystal display device and a corresponding charge sharing method are also provided.

Level shift circuit, liquid crystal display device and charge sharing method

A clock generation circuit has two output ends to provide a first clock signal and a second clock signal, in response to first and second input signals, respectively. A charge storage component is used to transfer some charge from the first output end to the charge storage component when the first clock signal is high for a period of time, and to transfer the charge from the charge storage component to the second output end when the second clock signal is low. At a different period of time in the clock cycle, the charge storage component is used to transfer some charge from the second output end to the charge storage component when the second clock signal is high for a period of time, and to transfer the charge from the charge storage component to the first output end when the first clock signal is low.

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Hsin-Chu, Taiwan

Chung-Shen Cheng