LIGHT-EMITTING DEVICE

WIPO Patent Application WO/2015/097971

A1

This light-emitting device has a light-emitting element and a light-extracting layer that transmits light produced by said light-emitting element. The light-emitting element has a light-transmitting first electrode layer on the side facing the light-extracting layer, a second electrode layer on the side facing away from the light-extracting layer, a light-emitting layer between the first and second electrode layers, and a power-feeding unit that is positioned near the first and second electrode layers and the light-emitting layer and applies a voltage between the first and second electrode layers. The light-extracting layer has a structure in which a low-refractive-index layer having a relatively low refractive index and a high-refractive-index layer having a refractive index that is higher than that of the low-refractive-index layer are laminated together. The interface between the low-refractive-index layer and the high-refractive-index layer is textured. The light-extracting layer has a first region and a second region that is farther from the power-feeding unit than the first region is, and the texture at the aforementioned interface is designed such that the second region exhibits a higher light-extraction efficiency than the first region.

NAKAMURA YOSHITAKA
INADA YASUHISA
HASHIYA AKIRA
HIRASAWA TAKU

PCT/JP2014/005725

July 02, 2015

November 14, 2014

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PANASONIC IP MAN CO LTD (JP)

H05B33/02; G09F9/30; H01L27/32; H01L51/50

WO2011132773A1

2011-10-27

JP2007184543A	2007-07-19
JP2012503300A	2012-02-02
JP2009272059A	2009-11-19

OKUDA, SEIJI (JP)
Seiji Okuda (JP)

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