| 摘要 |
PROBLEM TO BE SOLVED: To improve picture quality by preventing ghosts and vertical stripes from occurring by sequentially generating sampling pulses which are not made to overlap switches connected with the same video signal line but are made to overlap adjacent switches. SOLUTION: Switches SW1-SW4 each of a sampling switch group 16 are driven by generating the sampling pulses Vh1-1, Vh1-2, Vh2-1, Vh2-2 which are made not to overlap a switch connected with the same video signal but are made to overlap a switch adjacent to the sampling group 16. In such a manner, since video signals are not interfered with each other between different signal lines, the video signals are settled without occurrence of ghosts, and moreover since the video signals are not influenced by potential fluctuation of the signal lines vertical stripes do not occur.
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