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Organic light emitting diode display for suppressing reflection of external light

  • US 8,198,802 B2
  • Filed: 07/23/2009
  • Issued: 06/12/2012
  • Est. Priority Date: 07/25/2008
  • Status: Active Grant
First Claim
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1. An organic light emitting diode (OLED) display comprising:

  • an OLED comprising i) a first electrode, ii) an organic emission layer formed on the first electrode, and iii) a second electrode formed on the organic emission layer;

    a dual brightness enhancement film (DBEF) formed over the second electrode of the OLED;

    a first polarizing plate directly contacting the DBEF;

    a cholesteric liquid crystal (CLC) layer directly contacting the first polarizing plate, wherein the first polarizing plate is interposed between and contacts the CLC layer and the DBEF;

    a phase delay plate formed on the CLC layer, wherein the phase delay plate is a ¼

    wavelength plate; and

    a second polarizing plate formed on the phase delay plate.

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