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Display device

  • US 7,330,168 B2
  • Filed: 04/30/2003
  • Issued: 02/12/2008
  • Est. Priority Date: 04/30/2002
  • Status: Active Grant
First Claim
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1. An electroluminescent display device having a plurality of pixel portions, each of the pixel portions comprising:

  • an electroluminescent element;

    a driving transistor driving the electroluminescent element;

    a drain signal line;

    a pixel selecting transistor supplying a signal from the drain signal line to a gate of the driving transistor; and

    a storage capacitance element holding the signal supplied to the gate of the driving transistor, the storage capacitance element including an extension of a source of the pixel selecting transistor as a first capacitance electrode layer, a second capacitance electrode layer disposed above the extension of the source, an insulating film disposed on the second capacitance electrode layer and a third capacitance electrode layer connected to the source and disposed on the insulating layer,wherein the drain signal line and the third capacitance electrode layer lie in the same plane as a top plane of the insulating film.

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