Novatek Microelectronics Corp.

Yun-Hsuan Yeh

Ying-Hsiang Wang

Yao-Hung Kuo

Tai-Yin Wu

The present invention provides a driving circuit for a gamma voltage generator of a source driver. The gamma voltage generator includes a resistor string having a plurality of tap nodes, among which a plurality of first tap nodes are respectively connected to a plurality of first buffers. The driving circuit includes a second buffer, a digital-to-analog converter (DAC) and a control circuit. The second buffer is connected to a second tap node other than the plurality of first tap nodes among the plurality of tap nodes. The DAC is coupled to the second buffer. The control circuit, coupled to the DAC, is configured to receive a plurality of first control signals for the plurality of first buffers and calculate a second control signal for the DAC according to the plurality of first control signals.

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Tainan, Taiwan

Yun-Hsuan Yeh