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Semiconductor display device and method of driving the same

  • US 20010052898A1
  • Filed: 01/30/2001
  • Published: 12/20/2001
  • Est. Priority Date: 02/01/2000
  • Status: Active Grant
First Claim
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1. A semiconductor display device comprising:

  • a source signal line drive circuit unit constituted by plural thin-film transistors;

    a gate signal line drive circuit unit constituted by plural thin-film transistors; and

    a pixel unit in which plural pixel thin-film transistors are arranged like a matrix;

    wherein, the gate signal line drive circuit has at least one tristate buffer per a gate signal line;

    the tristate buffer has;

    a first circuit that includes a pair of n-channel thin-film transistor and p-channel thin-film transistor; and

    a second circuit that includes a pair of n-channel thin-film transistor and p-channel thin-film transistor;

    the source region of the n-channel thin-film transistor in the first circuit is electrically connected, at a first connection point, to the source region of the p-channel thin-film transistor of the second circuit;

    a first power source is electrically connected to the source region of the p-channel thin-film transistor of the first circuit;

    a second power source having a potential lower than that of the first power source is electrically connected to the first connection point;

    a third power source having a potential lower than the second power source is electrically connected to the source region of the n-channel thin-film transistor of the second circuit; and

    an output signal line of the first circuit and an output signal line of the second circuit are both electrically connected to the gate signal line at a second connection point.

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