| 摘要 |
A source driver circuit and method for use in a thin film transistor liquid crystal display that can reduce the slew rate of color data includes a data latching unit for receiving and storing color data in response to a main clock signal, and outputting the stored color data in response to a predetermined first control signal; a switching buffering unit for receiving the color data output from the data latching unit, and applying the color data to a panel in response to a predetermined second control signal; and an output controller for generating the first and second control signals in response to the main clock signal, a polarity inversion signal that controls the polarity of voltage of the color data output to the panel, and the first clock signal. According to the source driver circuit and method, the slew rate of the color data, which is to be applied to a panel, can be reduced using the existing signals, without additionally making signals at the outside of a semiconductor chip. Also, in this source driver circuit, a switching current caused by the switching of a shift register and an output buffer at once is reduced, and the size of a driving transistor that is used to reduce the slew rate of color data can be reduced, thereby reducing power consumption and the resulting size of the chip.
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