Substrate of emitting device and emitting device using the same

Details Substrate of emitting device and emitting device using the same Substrate of emitting device and emitting device using the same

2008-05-20

2009-12-29

Dickey, Thomas L (Department: 2826)

Active solid-state devices (e.g., transistors, solid-state diode

Organic semiconductor material

Reexamination Certificate

active

07638797

ABSTRACT:
Provided is a substrate for a light-emitting device having good light emitting efficiency and light-emitting device using the substrate. A light transparent substrate10is layered with a first layer30having a refractive index higher than that of the light transparent substrate10and a second layer40having a refractive index lower than that of the first layer. The refractive index of the first layer30is set to be 1.35 times as high as that of the second layer40. With this layer structure, in an emitting layer of the light-emitting device, a wave front of a spherical wave form exited from a point light source in the front direction is converted into that of a plane wave form, and exited outside the substrate at a high efficiency.

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