Chunghwa Picture Tubes, Ltd.

National Yang Ming Chiao Tung University

Han-Lung Liu

Wen-Chuan Wang

Wei-Lien Sung

Po-Tsun Liu

Shih-Chieh Lin

Guang-Ting Zheng

Shao-Lun Chang

Yuan-Hao Chang

Wen-Che Wang

Chi-Liang Kuo

Yu-Fan Tu

Shao-Huan Hung

A gate driving circuit is provided. The gate driving circuit includes multistage driving modules, where an Nstage driving module includes a setting circuit, a first driving circuit, an isolating switch circuit, a second driving circuit and an anti-noise circuit. The setting circuit generates a first precharge signal according to a gate driving signal of an (N&#x2212;2)scan line or a start signal. The isolating switch circuit coupled between the first driving circuit and the second driving circuit provides a second precharge signal, so as to effectively avoid a flickering problem of a display image caused by a surge of the gate driving signal due to a coupling effect of a parasitic capacitance of the transistor and a bootstrap capacitor, and meanwhile the bootstrap capacitor is not used, so as to effectively reduce a bezel area.

Gate driving circuit with isolating switch for display device using the same

A driving circuit in this disclosure includes plural stages of shift register circuits. Every stage in the shift register circuits includes an enabling control circuit, a first output circuit, a second output circuit and a disabling control circuit. The enabling circuit is configured to control the voltage of the first operation node according to enabling signal. The first output unit is configured to generate the first driving signal according to the voltage of the first operation node and the first clock signal. The second output unit is configured to generate the second driving signal according to the voltage of the first operation node and the second clock signal. The disabling control unit is used to pull low the voltage of the first operation node and output terminal of the first and second output unit to the reference voltage according to the first, third, and fourth clock signals.

Driving circuit and driving method

A display panel includes a substrate, and a pixel array and a gate driving circuit. The gate driving circuit provides gate driving signals to the pixel array, and includes shift registers, wherein each shift register includes a voltage providing unit, a first driving transistor, a voltage transmitting unit and a second driving transistor. The voltage providing unit receives a setting signal and a system high voltage to provide a first terminal voltage. The first driving transistor receives a first clock signal and the first terminal voltage to provide a first gate driving signal. The voltage transmitting unit receives the first gate driving signal to provide a second terminal voltage. The second driving transistor receives a second clock signal and the second terminal voltage to provide a second gate driving signal. Therefore, the influence caused by large difference of driving capabilities of the first and the second driving transistor is avoided.

Display panel

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Taichung, Taiwan

Han-Lung Liu