Organic light emitting device
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United States of America Patent
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Sep 29, 2015
Grant Date -
Jul 18, 2013
app pub date -
Dec 10, 2012
filing date -
Jan 18, 2012
priority date (Note) -
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Abstract
An organic light emitting device is provided that includes a substrate; an embossing layer provided on the substrate; a planarization layer provided on the embossing layer; a first electrode provided on the planarization layer; an organic light emitting layer provided on the first electrode; and a second electrode provided on the organic light emitting layer. The planarization layer may include a first planarization layer provided on the embossing layer; and a second planarization layer provided on the first planarization layer. The embossing layer may have a refractive index ranging from about 1.3 to about 1.5. The planarization layer may include a first planarization layer having a surface roughness of about 10 nm to about 50 nm and a refractive index that ranges from about 1.8 to about 2.5; and a second planarization layer provided on the first planarization layer and having a surface roughness of less than about 10 nm.
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