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LIGHT EMITTING ELEMENT AND LIGHT EMITTING DEVICE USING THE SAME

  • US 20110101380A1
  • Filed: 01/10/2011
  • Published: 05/05/2011
  • Est. Priority Date: 07/23/2004
  • Status: Active Grant
First Claim
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1. A light emitting device comprising:

  • a first electrode;

    a first layer over the first electrode, the first layer comprising a first substance with a hole transporting property and a second substance with an electron accepting property with respect to the first substance;

    a second layer over the first layer, the second layer comprising a third substance with an electron transporting property and a fourth substance with an electron donating property with respect to the third substance;

    a third layer over the second layer, the third layer comprising a light emitting substance; and

    a second electrode over the third layer.

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