Color organic OLED device
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United States of America Patent
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May 5, 2009
Grant Date -
Aug 17, 2006
app pub date -
Apr 10, 2006
filing date -
Feb 6, 2004
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Abstract
An OLED device comprising an anode and a cathode spaced from the anode, two EL units disposed between the anode and cathode, such EL units being in contact with each other and each having at least one light emitting layer; and each EL unit further includes a p-type doped organic hole transporting layer disposed between the light emitting layer and the anode, and an n-type doped organic electron transporting layer disposed between the light emitting layer and the cathode.
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