Organic light-emitting display
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United States of America Patent
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Apr 28, 2009
Grant Date -
Sep 22, 2005
app pub date -
Mar 14, 2005
filing date -
Mar 18, 2004
priority date (Note) -
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Abstract
It is an object of the present invention to provide an organic light-emitting display of high light-emitting efficiency. The organic light-emitting element comprising a board, upper electrode, lower electrode, a plurality of light-emitting units placed between the upper and lower electrodes, and a charge-generating layer placed between a plurality of the light-emitting units, wherein one of the light-emitting units has a layer for emitting monochromatic light and one of the light-emitting units has a layer for emitting polychromatic light, the former unit having an equivalent or lower light-emitting efficiency than the latter unit.
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