公开(公告)号：US20220059766A1

公开(公告)日：2022-02-24

申请号：US17421370

申请日：2019-01-15

Applicant: SHARP KABUSHIKI KAISHA

Inventor： KANAKO NAKATA ,  TATSUYA RYOHWA ,  MAKOTO IZUMI

IPC: H01L51/00

Abstract: A light-emitting element includes: an anode; a cathode; and a light-emitting layer between the anode and the cathode, wherein the light-emitting layer contains quantum dots and ligands, the ligands are a polymer including at least two repeating units, and each repeating unit includes, at an end of at least one side chain thereof, a modified functional group coordinated to any one of the quantum dots.

公开(公告)号：US20210036254A1

公开(公告)日：2021-02-04

申请号：US16981953

申请日：2018-03-22

Applicant: SHARP KABUSHIKI KAISHA

Inventor： TATSUYA RYOHWA ,  MAKOTO IZUMI

IPC: H01L51/50 ,  H01L27/32 ,  H01L51/52 ,  C09K11/70 ,  C09K11/56 ,  C09K11/54 ,  C01G9/08 ,  C01G15/00

Abstract: A light-emitting element is a light-emitting element provided with a cathode electrode, an anode electrode, and a light-emitting layer formed between the cathode electrode and the anode electrode. The light-emitting layer is formed by a layer including blue quantum dot phosphor particles that emit blue light, green quantum dot phosphor particles that emit green light, and red quantum dot phosphor particles that emit red light.

公开(公告)号：US20210024823A1

公开(公告)日：2021-01-28

申请号：US16981471

申请日：2018-03-26

Applicant: SHARP KABUSHIKI KAISHA

Inventor： KANAKO NAKATA ,  TATSUYA RYOHWA ,  HIROSHI FUKUNAGA ,  MAKOTO IZUMI ,  YOUHEI NAKANISHI ,  HISAYUKI UTSUMI ,  MASAYUKI KANEHIRO

IPC: C09K11/06 ,  H01L51/50 ,  H01L51/00

Abstract: A QD particle dispersion contains a surface modification compound that protects a surface of QD phosphor particles dispersed in a solvent. The surface modification compound includes a heteroatom-containing functional group and a chain-type saturated hydrocarbon group. The QD particle dispersion is configured such that the absolute value of a difference between the surface free energy of an underlayer that provides a foundation for forming a QD layer in the light-emitting element and the surface free energy of the QD layer is 5 mN/m or less.

公开(公告)号：US20230136993A1

公开(公告)日：2023-05-04

申请号：US17793593

申请日：2020-02-04

Applicant: SHARP KABUSHIKI KAISHA

Inventor： HIROFUMI YOSHIKAWA ,  TATSUYA RYOHWA ,  Masaki YAMAMOTO ,  TAKAHIRO DOE

IPC: H10K50/115 ,  H10K71/00 ,  H10K59/35 ,  C09K11/02 ,  C09K11/88

Abstract: A light-emitting element includes a light-emitting layer, and the light-emitting layer includes a plurality of quantum dots covered by shells containing a ferritin protein.

公开(公告)号：US20220037604A1

公开(公告)日：2022-02-03

申请号：US17277269

申请日：2018-09-18

Applicant: SHARP KABUSHIKI KAISHA

Inventor： HISAYUKI UTSUMI ,  YOUHEI NAKANISHI ,  MASAYUKI KANEHIRO ,  SHOTA OKAMOTO ,  HIROKI IMABAYASHI ,  TATSUYA RYOHWA ,  KANAKO NAKATA

IPC: H01L51/50 ,  H01L51/56 ,  H01L51/00

Abstract: A light-emitting element includes an anode, a hole transport layer, a quantum dot light-emitting layer, an electron transport layer, and a cathode, in this order. The electron transport layer includes a particulate metal oxide and a conductive resin that disperses the metal oxide.

公开(公告)号：US20210273189A1

公开(公告)日：2021-09-02

申请号：US17258336

申请日：2018-07-24

Applicant: SHARP KABUSHIKI KAISHA

Inventor： HIROKI IMABAYASHI ,  MASAYUKI KANEHIRO ,  HISAYUKI UTSUMI ,  SHOTA OKAMOTO ,  YOUHEI NAKANISHI ,  TATSUYA RYOHWA ,  KANAKO NAKATA

IPC: H01L51/50 ,  H01L51/00 ,  H01L51/56 ,  C09K11/02

Abstract: Provided is a light-emitting device including a light-emitting element including a first electrode, a second electrode, and a quantum dot layer between the first electrode and the second electrode, wherein, in the quantum dot layer, quantum dots each including a core, a shell covering the core, and a ligand coordinated with a surface of the shell and having defect compensation properties are layered.

公开(公告)号：US20230247848A1

公开(公告)日：2023-08-03

申请号：US17928277

申请日：2020-06-01

Applicant: SHARP KABUSHIKI KAISHA

Inventor： TATSUYA RYOHWA ,  KANAKO NAKATA ,  YUSUKE SAKAKIBARA ,  MAKOTO IZUMI

IPC: H10K50/115 ,  H10K50/16 ,  H10K59/38

CPC classification number: H10K50/115 ,  H10K50/16 ,  H10K59/38

Abstract: A light-emitting layer included in a light-emitting element according to the disclosure contains a plurality of red quantum dots that emit red light, a plurality of green quantum dots that emit green light, and a plurality of blue quantum dots that emit blue light. The surface-to-surface distance between the red quantum dots adjacent to each other is longer than the surface-to-surface distance between the green quantum dots adjacent to each other, and the surface-to-surface distance between the green quantum dots adjacent to each other is longer than the surface-to-surface distance between the blue quantum dots adjacent to each other.

公开(公告)号：US20220165973A1

公开(公告)日：2022-05-26

申请号：US17434867

申请日：2019-03-11

Applicant: SHARP KABUSHIKI KAISHA

Inventor： HIROFUMI YOSHIKAWA ,  TATSUYA RYOHWA ,  Masaki YAMAMOTO ,  TAKAHIRO DOE

IPC: H01L51/50 ,  C09K11/88 ,  C09K11/70 ,  C09K11/08 ,  C09K11/02

Abstract: A light-emitting element includes: an anode electrode configured to supply holes; a cathode electrode configured to supply electrons; and a light-emitting layer disposed between the anode electrode and the cathode electrode. The light-emitting layer includes a plurality of quantum dot phosphors configured to emit light in conjunction with combining of holes supplied from the anode electrode and electrons supplied from the cathode electrode and a p-type dopant.

公开(公告)号：US20220013744A1

公开(公告)日：2022-01-13

申请号：US17289208

申请日：2018-10-30

Applicant: SHARP KABUSHIKI KAISHA

Inventor： YUSUKE SAKAKIBARA ,  TATSUYA RYOHWA

IPC: H01L51/50 ,  H05B33/26 ,  H05B33/10 ,  H01L27/32

Abstract: Provided is a light-emitting element to highly efficiently emit light in different colors. The light-emitting element includes: a cathode; an anode; a light-emitting layer formed between the cathode and the anode, and including a plurality of light-emitting regions respectively emitting light of different wavelengths; and an electron-transport layer formed between the cathode and the light-emitting layer, and including a plurality of regions each corresponding to one of the light-emitting regions. The electron-transport layer includes a Zn1-XMgXO film (where X is 0≤X

公开(公告)号：US20210028385A1

公开(公告)日：2021-01-28

申请号：US17040941

申请日：2018-03-29

Applicant: SHARP KABUSHIKI KAISHA

Inventor： YUSUKE SAKAKIBARA ,  KENJI KIMOTO ,  TATSUYA RYOHWA

IPC: H01L51/50 ,  H01L27/32 ,  H01L51/56

Abstract: For a purpose of simplifying a structure of a light-emitting element while maintaining luminous efficiency of the light-emitting element, the present invention provides a light-emitting element including: a cathode electrode; an anode electrode; a light-emitting layer between the cathode electrode and the anode electrode; an electron transport layer between the light-emitting layer and the cathode electrode; and a hole transport layer between the light-emitting layer and the anode electrode. The light-emitting element further includes a plurality of subpixels for each light emission wavelength of the light-emitting layer, the light-emitting layer and the electron transport layer for each of the plurality of subpixels, and the hole transport layer common to at least the plurality of subpixels.