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OLED DEVICE HAVING IMPROVED LIGHT OUTPUT

  • US 20080012471A1
  • Filed: 06/29/2006
  • Published: 01/17/2008
  • Est. Priority Date: 06/29/2006
  • Status: Abandoned Application
First Claim
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1. An organic light-emitting diode (OLED) device, comprising:

  • a transparent substrate;

    one-or-more transparent thin-film transistors located over the substrate;

    one or more light-emitting elements formed over the transparent thin-film transistors, wherein each light-emitting element comprises;

    a first transparent extensive electrode formed at least partially over at least a portion of the one-or-more transparent thin-film transistors;

    at least one layer of light-emitting organic material formed over the first transparent extensive electrode; and

    a second reflective electrode formed over the at least one layer of light-emitting organic material;

    a low-index layer formed between the first transparent extensive electrode and the one-or-more thin-film transistors, the low-index layer having a lower optical index than that of the layer of light-emitting organic material, the transparent thin-film transistors, and the transparent substrate; and

    a light-scattering layer formed between the low-index layer and the second reflective electrode, or formed as part of the second reflective electrode.

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