Display device
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United States of America Patent
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Oct 22, 2013
Grant Date -
Aug 14, 2008
app pub date -
Feb 5, 2008
filing date -
Feb 9, 2007
priority date (Note) -
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Abstract
A display device includes: a first electrode; a second electrode; and an emitting material layer which is interposed between the first electrode and the second electrode, the emitting material layer being doped with an electric charge transport material of which content varies along a thickness direction and comprising a plurality of sub-layers staked in sequence.
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