| 摘要 |
An object of the present invention is to suppress a picture defect such as a vertical streak, a ghost or the like on an active matrix display apparatus of a divided sample and hold type. A horizontal driving circuit ( 17 ) sequentially generates sampling pulses of which sampling pulses supplied to sampling switches ( 23 ) connected to an identical video line ( 25 ) do not overlap each other and sampling pulses supplied to adjacent sampling switches ( 23 ) overlap each other, and drives the switches, whereby a video signal is sequentially written to pixels ( 11 ). A clock generating circuit ( 18 ) generates a clock signal HCK serving as a basis for operation of the horizontal driving circuit ( 17 ), and a clock signal 2 HCK having twice a cycle of the clock signal HCK and twice a pulse width of the clock signal HCK. The horizontal driving circuit ( 17 ) includes: a shift register ( 21 ) for performing shift operation in synchronism with the clock signal HCK and sequentially outputting shift pulses; and an extracting switch group ( 22 ) for extracting the clock signal 2 HCK in response to the shift pulses, and sequentially generating the sampling pulses.
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