| 摘要 |
A source driver output circuit of a thin film transistor (TFT) liquid crystal display (LCD) includes first through n-th voltage generators, first through n-th switching portions, first through n-th sub switching portion, and a voltage-generating portion. The first through n-th (where n is even integer) voltage generators receive first through n-th corresponding input voltages and generate first through n-th sub input voltages. The first through n-th switching portions generate the first through n-th sub input voltages as first through n-th corresponding output voltages when activated or cut off the first through n-th sub input voltages when deactivated. The first through n-th sub switching portions connect predetermined share lines to the first through n-th output voltages when activated or cut off the predetermined share lines when deactivated. The voltage-generating portion receives predetermined first and second voltages and applies predetermined precharge voltages to the share lines. The slew rate of a signal that is input to the panel from the source driver can be improved through the use of the first and second voltages or first and second external voltages, and current consumption in the source driver can be reduced.
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