Display device and drive method thereof

A method for driving a display apparatus, the display apparatus comprising:

• a pixel array unit including pixels arranged in a matrix and signal lines arranged so that one corresponds to each vertical column of pixels in the matrix of pixels;
• clock generating means for generating a horizontal start pulse for indicating a start of horizontal scanning, first clock pulses being used as a basis for the horizontal scanning, and second clock pulses having n phases and being synchronized with the first clock pulses, where n is an integer equal to or greater than three;
• a shift register including cascaded shift register stages for sequentially transferring the horizontal start pulse in synchronism with the first clock pulses, the shift register being configured to successively output transfer pulses from the shift register stages;
• a group of first switches configured to successively generate sampling pulses by extracting the second clock pulses in response to the transfer pulses successively output from the shift register;
• and
• a group of second switches configured to successively sample input video signals in response to the sampling pulses generated by the group of first switches and to provide the video signals to the signal lines in the pixel array unit,
• wherein the start pulse has a pulse width that includes a plurality of pulse widths of the first clock pulses.