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Active matrix light-emitting device with overlapping electroluminescent layers

  • US 9,450,030 B2
  • Filed: 07/07/2014
  • Issued: 09/20/2016
  • Est. Priority Date: 12/28/2001
  • Status: Expired due to Term
First Claim
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1. An active matrix display device comprising:

  • a substrate;

    a first interlayer insulating film over the substrate, the first interlayer insulating film being formed from an inorganic insulating material;

    a second interlayer insulating film over the first interlayer insulating film, the second interlayer insulating film being made from an organic insulating material;

    a first transistor and a second transistor in a pixel portion, between the substrate and the first interlayer insulating film;

    one of a first source electrode and a first drain electrode of the first transistor between the first interlayer insulating film and the second interlayer insulating film, and in a first contact hole formed in the first interlayer insulating film;

    a first pixel electrode on the second interlayer insulating film and in a first contact hole formed in the second interlayer insulating film, and in electrical contact with the one of the first source electrode and the first drain electrode;

    one of a second source electrode and a second drain electrode of the second transistor between the first interlayer insulating film and the second interlayer insulating film, and in a second contact hole formed in the first interlayer insulating film;

    a second pixel electrode on the second interlayer insulating film and in a second contact hole formed in the second interlayer insulating film, and in electrical contact with the one of the second source electrode and the second drain electrode;

    a bank made from an organic resin covering an edge of the first pixel electrode, an edge of the second pixel electrode, and the first contact hole formed in the second interlayer insulating film;

    a first EL layer on the first pixel electrode and the bank;

    a second EL layer on the second pixel electrode and the bank;

    a laminate portion formed by an overlap of the first EL layer with the second EL layer;

    a third electrode on the first EL layer and on the second EL layer;

    a first insulating film over the third electrode; and

    a sealing substrate over the first insulating film.

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