公开(公告)号：US09880336B2

公开(公告)日：2018-01-30

申请号：US15215595

申请日：2016-07-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yasuhisa Inada ,  Taku Hirasawa ,  Yoshitaka Nakamura ,  Akira Hashiya ,  Mitsuru Nitta ,  Takeyuki Yamaki

IPC: F21V8/00 ,  F21S2/00 ,  G02B5/18 ,  G02B6/00 ,  H01L33/50 ,  H01L27/15 ,  H01L33/46 ,  H01L33/22

CPC classification number: G02B6/0003 ,  F21S2/00 ,  G02B5/18 ,  G02B6/00 ,  G02B6/0038 ,  G02B6/0055 ,  H01L27/156 ,  H01L33/22 ,  H01L33/46 ,  H01L33/50

Abstract: A light-emitting device includes a photoluminescent layer, a light-transmissive layer located on the photoluminescent layer, and a multilayer mirror layered together with the photoluminescent layer and the light-transmissive layer. At least one of the photoluminescent layer and the light-transmissive layer has a submicron structure. The submicron structure has at least projections or recesses arranged perpendicular to the thickness direction of the photoluminescent layer. The photoluminescent layer emits light including first light having a wavelength λa in air. The distance Dint between adjacent projections or recesses and the refractive index nwav-a of the photoluminescent layer for the first light satisfy λa/nwav-a

公开(公告)号：US09871226B2

公开(公告)日：2018-01-16

申请号：US15036145

申请日：2014-10-09

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Kazuyuki Yamae ,  Yasuhisa Inada ,  Akira Hashiya

IPC: H01L51/52 ,  H01L51/50 ,  H01L51/00

CPC classification number: H01L51/5268 ,  H01L51/0037 ,  H01L51/5056 ,  H01L51/5072 ,  H01L51/5088 ,  H01L51/5092 ,  H01L51/5275 ,  H01L51/5293

Abstract: This organic electroluminescent element includes: a light transmissive substrate; a light emitting stack including a first electrode, a light emitting layer, and a second electrode; and at least one light-outcoupling structure which has an uneven structure. The light emitting layer has a birefringence property with a higher refractive index in a direction parallel to a surface of the light transmissive substrate than a refractive index in a direction perpendicular to the surface of the light transmissive substrate. The uneven structure includes a plurality of protrusions which are individually allocated to some of planar matrix-like sections, and with regard to unit regions consisting of same number of sections of the planar matrix-like sections, a ratio of an area of one or more of the plurality of protrusions in a unit region is substantially constant in each unit region.

公开(公告)号：US09647240B2

公开(公告)日：2017-05-09

申请号：US14891811

申请日：2014-01-17

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Akira Hashiya ,  Yasuhisa Inada ,  Kazuyuki Yamae

IPC: H01L51/52 ,  H01L51/50 ,  G02B3/00 ,  G02B5/02

CPC classification number: H01L51/5275 ,  G02B3/0068 ,  G02B5/0242 ,  G02B5/0278 ,  H01L2251/5315 ,  H01L2251/5361

Abstract: An illuminator includes a light-emitting element and a light extraction sheet which transmits light occurring from the light-emitting element. The light-emitting element includes a first electrode having a light transmitting property, a second electrode, and an emission layer between the first and second electrodes. The light extraction sheet includes a light-transmitting substrate having a first face and a second face, a first light extraction structure on the first face side of the light-transmitting substrate, and a second light extraction structure on the second face side of the light-transmitting substrate. The first light extraction structure includes a low-refractive index layer and a high-refractive index layer having a higher refractive index than the low-refractive index layer. The second light extraction structure is arranged so that light which is transmitted through the light-transmitting substrate and arrives at an incident angle of 60 to 80 degrees has an average transmittance of 20% or more.

公开(公告)号：US09518215B2

公开(公告)日：2016-12-13

申请号：US14618254

申请日：2015-02-10

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Taku Hirasawa ,  Yasuhisa Inada ,  Yoshitaka Nakamura ,  Akira Hashiya ,  Mitsuru Nitta ,  Takeyuki Yamaki

IPC: H01L33/00 ,  C09K11/00 ,  H05B33/14 ,  H01L33/50 ,  C09K11/77

CPC classification number: C09K11/00 ,  C09K11/7721 ,  H01L33/508 ,  H05B33/14

Abstract: A light-emitting device includes a photoluminescent layer that emits light containing first light, a light-transmissive layer located on or near the photoluminescent layer, and one or more reflectors. A submicron structure is defined on at least one of the photoluminescent layer and the light-transmissive layer. The one or more reflector are located outside the submicron structure. The submicron structure includes at least projections or recesses and satisfies the following relationship: λa/nwav-a