公开(公告)号：US10263162B2

公开(公告)日：2019-04-16

申请号：US15874019

申请日：2018-01-18

Applicant: Sharp Kabushiki Kaisha

Inventor： Kenichi Yoshimura ,  Tatsuya Ryohwa ,  Makoto Izumi ,  Noriyuki Yamazumi

IPC: H01L33/00 ,  H01L33/50 ,  H01L33/56 ,  F21V8/00 ,  H01L33/48 ,  H01L33/58

Abstract: A light emitting device includes a light emitting element disposed on a substrate which emits blue light, a green phosphor that emits green light upon being excited by the blue light, a red phosphor that emits red light upon being excited by the blue light, and a transparent resin including the green phosphor and the red phosphor dispersed therein. The red phosphor is arranged to be in contact with the light emitting element and the substrate. The transparent resin includes a constitutional unit including an ionic liquid including a polymerizable functional group or a derivative of the ionic liquid.

公开(公告)号：US09812617B2

公开(公告)日：2017-11-07

申请号：US15156431

申请日：2016-05-17

Applicant: Sharp Kabushiki Kaisha

Inventor： Kenichi Yoshimura ,  Tatsuya Ryohwa ,  Makoto Izumi

IPC: H01L33/00 ,  H01L33/50 ,  H01L33/56 ,  H01L33/44

CPC classification number: H01L33/504 ,  H01L33/44 ,  H01L33/501 ,  H01L33/502 ,  H01L33/507 ,  H01L33/56

Abstract: A light-emitting device includes a light-emitting element configured to emit blue light, a first wavelength conversion member containing a Mn4+-activated fluorine complex phosphor, and a second wavelength conversion member containing a quantum-dot phosphor, in which the first wavelength conversion member and the second wavelength conversion member are spatially separated from each other.

公开(公告)号：US09711686B2

公开(公告)日：2017-07-18

申请号：US15076757

申请日：2016-03-22

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Kenichi Yoshimura ,  Kohsei Takahashi ,  Hiroshi Fukunaga

IPC: H01L33/00 ,  H01L21/00 ,  H01L33/26 ,  C09K11/08 ,  C09K11/77 ,  H01L33/50

CPC classification number: H01L33/26 ,  C09K11/0883 ,  C09K11/7734 ,  C09K11/7774 ,  H01L33/501 ,  H01L33/504 ,  H01L2224/48091 ,  H01L2224/73265 ,  H01L2924/181 ,  H01L2924/00012 ,  H01L2924/00014

Abstract: Provided is a light-emitting device that has a high emission efficiency, excellent stability and temperature properties, and that generates light having a high color rendering property sufficient for practical use. This semiconductor light-emitting device comprises a semiconductor light-emitting element that emits blue light, a green phosphor that absorbs the blue light and emits green light, and an orange phosphor that absorbs the blue light and emits orange light, and is characterized in that the orange phosphor is an Eu-activated α-SiAlON phosphor having an emission spectrum peak wavelength within a range of 595 to 620 nm.

公开(公告)号：US20160225963A1

公开(公告)日：2016-08-04

申请号：US15005274

申请日：2016-01-25

Applicant: Sharp Kabushiki Kaisha ,  National Institute for Materials Science

Inventor： Kenichi Yoshimura ,  Makoto Izumi ,  Masamichi Harada ,  Hiroshi Fukunaga ,  Kazunori Annen ,  Naoto Hirosaki ,  Hiroyo Segawa

IPC: H01L33/50 ,  C09K11/77 ,  C03B19/12

CPC classification number: H01L33/504 ,  C03B19/12 ,  C03C14/006 ,  C03C2214/16 ,  C09K11/7734 ,  H01L33/507 ,  H01L2933/0041

Abstract: A wavelength converting member includes silica glass and a plurality of fluorescent material particles including an oxynitride or nitride fluorescent material and dispersed in the silica glass. The plurality of fluorescent material particles include at least two kinds of fluorescent material particles including (i) first fluorescent material particles that emit a fluorescence having a first peak wavelength and (ii) second fluorescent material particles that emit a fluorescence having a second peak wavelength. The wavelength converting member has a density within a range from 0.8 g/cm3 to 1.2 g/cm3.

Abstract translation: 波长转换部件包括二氧化硅玻璃和多个包含氮氧化物或氮化物荧光材料并分散在二氧化硅玻璃中的荧光材料颗粒。 多个荧光材料粒子包括至少两种荧光材料颗粒，其包括（i）发射具有第一峰值波长的荧光的第一荧光材料颗粒和（ii）发射具有第二峰值波长的荧光的第二荧光材料颗粒。 波长转换构件的密度在0.8g / cm 3至1.2g / cm 3的范围内。

公开(公告)号：US11832466B2

公开(公告)日：2023-11-28

申请号：US17265013

申请日：2018-08-03

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Tadashi Kobashi ,  Kenichi Yoshimura ,  Masashi Kago ,  Noboru Iwata

IPC: H01L51/50 ,  H10K50/115 ,  C09K11/08 ,  C09K11/70 ,  C09K11/88 ,  H10K50/15 ,  H10K50/16 ,  H10K50/818 ,  H10K50/828 ,  H10K59/12 ,  B82Y20/00 ,  H10K102/00

CPC classification number: H10K50/115 ,  C09K11/0883 ,  C09K11/70 ,  C09K11/883 ,  H10K50/15 ,  H10K50/16 ,  H10K50/818 ,  H10K50/828 ,  H10K59/12 ,  B82Y20/00 ,  H10K2102/3026 ,  H10K2102/3035 ,  H10K2102/331 ,  H10K2102/351

Abstract: An electroluminescent element according to an aspect of the disclosure includes: a pair of a cathode electrode and an anode electrode; a light-emitting layer provided between the cathode electrode and the anode electrode; an electron transport layer provided between the cathode electrode and the light-emitting layer; and a hole transport layer provided between the anode electrode and the light-emitting layer. The light-emitting layer includes ZnSe-based quantum dots including ZnSe and one of the electron transport layer and the hole transport layer is composed of ZnO particles having an average particle size of 3 nm or greater and 30 nm or less.

公开(公告)号：US11079627B2

公开(公告)日：2021-08-03

申请号：US16284374

申请日：2019-02-25

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Masatsugu Masuda ,  Hideaki Fujii ,  Takeshi Kawahara ,  Toshiyuki Tanaka ,  Kenichi Yoshimura ,  Makoto Yoshimura ,  Masataka Miyata ,  Takehiro Shiomoto

IPC: G02F1/13357 ,  G02F1/1335 ,  G02F1/1343 ,  G02F1/1333 ,  F21V9/30 ,  C09K11/61 ,  G02B5/22 ,  C09B11/04 ,  C09K11/77 ,  H01L33/50 ,  C09K11/08

Abstract: A liquid crystal display device includes: a liquid crystal display panel that includes red color filters, green color filters, and blue color filters; and an illumination device that illuminates the liquid crystal display panel with white light. The illumination device includes light-emitting elements that emit blue light, a green phosphor that absorbs a portion of the blue light emitted from the light-emitting elements and then emits green light, and a red phosphor that absorbs a portion of the blue light emitted from the light-emitting elements and then emits red light. The blue color filters are made of a colored material that contains a dye, and the chromaticity values x and y of the white light emitted from the illumination device satisfy the relationships 0.24

公开(公告)号：US10381528B2

公开(公告)日：2019-08-13

申请号：US15236588

申请日：2016-08-15

Applicant: Sharp Kabushiki Kaisha ,  National Institute for Materials Science

Inventor： Kenichi Yoshimura ,  Shigetoshi Ito ,  Makoto Izumi ,  Masamichi Harada ,  Hiroshi Fukunaga ,  Naoto Hirosaki

IPC: H01L33/50 ,  C09K11/00 ,  C09K11/08 ,  C09K11/57 ,  C09K11/61 ,  G02F1/1335 ,  G02F1/1337

Abstract: The present invention provides a light emitting device that makes it possible to provide an image display apparatus having a wide color reproduction range. The light emitting device includes a light emitting element that emits blue light; a Mn2+-activated γ-AlON phosphor that is a green phosphor; and a Mn4+-activated phosphor that is a red phosphor. The green light emitted by the Mn2+-activated γ-AlON phosphor has an emission-spectrum peak wavelength of not less than 518 nm and not more than 528 nm.

公开(公告)号：US10256377B2

公开(公告)日：2019-04-09

申请号：US15841366

申请日：2017-12-14

Applicant: Sharp Kabushiki Kaisha

Inventor： Noriyuki Yamazumi ,  Tatsuya Ryohwa ,  Kenichi Yoshimura ,  Hiroshi Fukunaga ,  Kanako Nakata ,  Makoto Izumi

IPC: H01L33/50 ,  H01L33/54 ,  H01L33/62 ,  H01L33/56 ,  H01L33/48 ,  F21V8/00 ,  H01L33/44 ,  G02F1/1335 ,  G02F1/1337 ,  G02F1/1343 ,  G02F1/1368

Abstract: A light-emitting device includes a light-emitting element configured to emit excitation light, and a phosphor layer in which phosphor particles are dispersed so as to emit fluorescence in response to the excitation light. The phosphor layer includes a constitutional unit derived from an ionic liquid having a polymerizable functional group. The light-emitting device further includes a protective layer that seals the light-emitting element therein.

公开(公告)号：US09741908B2

公开(公告)日：2017-08-22

申请号：US15005274

申请日：2016-01-25

Applicant: Sharp Kabushiki Kaisha ,  National Institute for Materials Science

Inventor： Kenichi Yoshimura ,  Makoto Izumi ,  Masamichi Harada ,  Hiroshi Fukunaga ,  Kazunori Annen ,  Naoto Hirosaki ,  Hiroyo Segawa

IPC: H01L33/00 ,  H01L33/50 ,  C03B19/12 ,  C09K11/77 ,  C03C14/00

CPC classification number: H01L33/504 ,  C03B19/12 ,  C03C14/006 ,  C03C2214/16 ,  C09K11/7734 ,  H01L33/507 ,  H01L2933/0041

Abstract: A wavelength converting member includes silica glass and a plurality of fluorescent material particles including an oxynitride or nitride fluorescent material and dispersed in the silica glass. The plurality of fluorescent material particles include at least two kinds of fluorescent material particles including (i) first fluorescent material particles that emit a fluorescence having a first peak wavelength and (ii) second fluorescent material particles that emit a fluorescence having a second peak wavelength. The wavelength converting member has a density within a range from 0.8 g/cm3 to 1.2 g/cm3.

公开(公告)号：US10381529B2

公开(公告)日：2019-08-13

申请号：US15447225

申请日：2017-03-02

Applicant: Sharp Kabushiki Kaisha ,  National Institute for Materials Science

Inventor： Kenichi Yoshimura ,  Makoto Izumi ,  Hiroshi Fukunaga ,  Naoto Hirosaki

IPC: H01L33/50 ,  C09K11/08 ,  C09K11/61 ,  C09K11/64 ,  H01L27/15

Abstract: A light-emitting device includes a light-emitting element that emits blue light, a Mn2+-activated γ-AlON green phosphor, and a dispersing material in which the green phosphor is dispersed. The green phosphor has an in-crystal Mn concentration of 2.5 wt % or more. The shortest path of the blue light through the dispersing material is 1 mm long or shorter.