公开(公告)号：US20230027405A1

公开(公告)日：2023-01-26

申请号：US17770579

申请日：2019-10-31

Applicant: SHARP KABUSHIKI KAISHA

Inventor： YASUSHI ASAOKA ,  KANAKO NAKATA ,  TATSUYA RYOHWA ,  MAKOTO IZUMI

IPC: H01L33/50 ,  H01L27/15 ,  H01L33/10 ,  H01L33/38 ,  H01L33/00

Abstract: A light-emitting element contains negative ions and positive ions, and includes a solid ionic layer, a layer containing quantum dots, and a cathode electrode and an anode electrode. The ionic layer includes a p-type doped region on the anode electrode side containing the negative ions in a higher quantity than the positive ions, an n-type doped region on the cathode electrode side containing the positive ions in a higher quantity than the negative ions, and a junction region between the p-type doped region and the n-type doped region. The layer containing the quantum dots is adjacent to the junction region. Alternatively, the quantum dots are contained in the junction region. Alternatively, the quantum dots are adjacent to the junction region.

公开(公告)号：US20220344606A1

公开(公告)日：2022-10-27

申请号：US17762851

申请日：2019-10-02

Applicant: SHARP KABUSHIKI KAISHA

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

IPC: H01L51/50 ,  H01L51/56

Abstract: A display device includes: ferritin encaging a first quantum dot and modified with a first peptide bound to a first pixel electrode; and ferritin encaging a second quantum dot and modified with a second peptide bound to a second pixel electrode. A first metal material and a second metal material are of different types.

公开(公告)号：US20220344548A1

公开(公告)日：2022-10-27

申请号：US17762871

申请日：2019-10-01

Applicant: SHARP KABUSHIKI KAISHA

Inventor： KENICHI YOSHIMURA ,  TADASHI KOBASHI ,  TATSUYA RYOHWA ,  MAKOTO IZUMI

IPC: H01L33/50

Abstract: A light-emitting element according to the disclosure includes an anode electrode, a cathode electrode, and a first light-emitting layer that includes a plurality of first quantum dots and emits light of a first color. The first light-emitting layer is provided between the anode electrode and the cathode electrode, and each of the plurality of first quantum dots includes a compound containing each of three elements of Zn, Se, and Te. A combination of an average particle size of the plurality of first quantum dots and a composition ratio of the three elements is selected such that the peak wavelength of a light emission spectrum of the first light-emitting layer is greater than 394 nm and equal to or less than 474 nm.

公开(公告)号：US20220320191A1

公开(公告)日：2022-10-06

申请号：US17641761

申请日：2019-10-02

Applicant: SHARP KABUSHIKI KAISHA

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

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

Abstract: A display device includes a plurality of pixel electrodes, a common electrode common to the plurality of pixel electrodes, and a light-emitting layer sandwiched between the plurality of pixel electrodes and the common electrode. The light-emitting layer includes quantum dots covered by ferritin. Each of the plurality of pixel electrodes and the quantum dots are bonded via a peptide modifying the ferritin.

公开(公告)号：US20220158108A1

公开(公告)日：2022-05-19

申请号：US17434347

申请日：2019-02-27

Applicant: SHARP KABUSHIKI KAISHA

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

IPC: H01L51/50

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 the quantum dots have a number average particle diameter greater than or equal to DLO2 and less than or equal to 100 nm, where DLO2 is a particle diameter of the quantum dots when the quantum dots exhibit an energy gap, between a ground state and a first excited state of a conduction band thereof, that is equivalent to twice an LO phonon energy of a material for the quantum dots.

公开(公告)号：US20210020699A1

公开(公告)日：2021-01-21

申请号：US17040929

申请日：2018-03-28

Applicant: SHARP KABUSHIKI KAISHA

Inventor： KENICHI YOSHIMURA ,  TADASHI KOBASHI ,  MASASHI KAGO ,  TATSUYA RYOHWA ,  MAKOTO IZUMI

IPC: H01L27/32 ,  H01L51/52 ,  H01L51/50 ,  G02F1/1335

Abstract: A light-emitting device includes: an anode electrode; a cathode electrode; a plurality of light-emitting layers sandwiched between the anode electrode and the cathode electrode; and a light absorption layer disposed between the plurality of light-emitting layers and a light extraction surface, wherein the plurality of light-emitting layers include InP based quantum dots and are configured to emit at least green color of light and red color of light, and the light absorption layer selectively absorbs light at 570 to 610 nm.