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High-color-temperature tandem white OLED

  • US 7,977,872 B2
  • Filed: 09/16/2008
  • Issued: 07/12/2011
  • Est. Priority Date: 09/16/2008
  • Status: Active Grant
First Claim
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1. An OLED device having two spaced electrodes comprising:

  • a. first, second, and third light-emitting units disposed between the electrodes, the first light-emitting unit produces light that has multiple peaks at wavelengths longer than 500 nm and substantially no emission at wavelengths shorter than 480 nm, and the second and third light-emitting units produce light that has substantial emission at wavelengths shorter than 500 nm;

    b. intermediate connectors respectively disposed between the first and second light-emitting units, and between the second and third light-emitting units; and

    c. wherein the OLED device emits light with a color temperature greater than 7,000K.

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