Source driver and display device having the same

A display device comprising:

• a controller generating a vertical start signal, output control signals, and digital image data;
• a display panel having a plurality of source lines and a plurality of gate lines;
• a source driver supplying analog data signals corresponding to the digital image data to the source lines in response to the output control signals and the digital image data;
• and
• a gate driver generating gate line driving signals for sequentially driving the gate lines in response to the vertical start signal,
• wherein the source driver performs a charge sharing operation for the source lines during an odd-numbered active period of a first output control signal among the output control signals, and supplies the analog data signals to the source lines in response to an even-numbered rising edge of the first output control signal.

A method of driving source lines of a display device, comprising:

• receiving and storing digital image data in response to a horizontal start signal that is sequentially shifted in response to a clock signal, and outputting the stored digital image data at a rising edge of a first output control signal;
• receiving the output digital image data, and supplying analog data signals corresponding to the received digital image data to a display panel in response to a polarity control signal and an activated second output control signal;
• and
• connecting output terminals of output buffers buffering the corresponding analog data signals in response to the second output control signal and a third output signal, where the second output control signal is activated at an Nth falling edge of the first output control signal and deactivated at an (N+2)th rising edge of the first output control signal in response to the first output control signal and the polarity signal that controls polarities of the analog data signals supplied to the display panel, the third output control signal is activated at an Nth rising edge of the first output control signal, and N is an odd number,
• wherein the second and third output control signals have a predetermined non-overlapped interval and opposite phases except in the non-overlapped interval.

A method of driving a display device, comprising:

• generating output control signals and digital image data;
• supplying analog data signals corresponding to the digital image data to a plurality of source lines of a display panel in response to the output control signals and the digital image data;
• and
• performing a charge sharing operation for the source lines during an odd-numbered active period of a first output control signal among the output control signals, and supplying the analog data signals to the source lines at an even-numbered rising edge of the first output control signal.