ORGANIC EL DEVICE
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United States of America Patent
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Issued Date -
Jul 18, 2013
app pub date -
Sep 13, 2011
filing date -
Sep 21, 2010
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Abstract
An organic EL device with a light diffusing element that includes a matrix containing a resin component and an ultrafine particle component, and a light diffusing fine particle dispersed in the matrix. Refractive indices of the resin component, the ultrafine particle component, and the light diffusing fine particle satisfy the following expression (1). Further, the light diffusing element includes a concentration adjusted area formed outside a vicinity of a surface of the light diffusing fine particle, in which a weight concentration of the resin component decreases and a weight concentration of the ultrafine particle component increases as a distance from the light diffusing fine particle increases.
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