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Light emitting device

  • US 20020047120A1
  • Filed: 04/23/2001
  • Published: 04/25/2002
  • Est. Priority Date: 04/27/2000
  • Status: Active Grant
First Claim
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1. A light emitting device comprising a source signal line driver circuit, a first gate signal line driver circuit, a second gate signal line driver circuit, and a pixel portion;

  • wherein said pixel portion comprises a plurality of pixels;

    wherein each of said plurality of pixels comprises an EL element;

    a first EL driver TFT and a second EL driver TFT for controlling light emitted from said EL element;

    a switching TFT for controlling said first EL driver TFT and said second EL driver TFT; and

    an erasure TFT;

    wherein said first EL driver TFT and said second EL driver TFT are connected in parallel;

    wherein said switching TFT is controlled by said first gate signal line driver circuit;

    wherein said erasure TFT is controlled by said second gate signal line driver circuit; and

    wherein said EL element is controlled by said switching TFT or the erasure TFT.

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