公开(公告)号：US20230380202A1

公开(公告)日：2023-11-23

申请号：US18026539

申请日：2020-09-18

Applicant: SHARP KABUSHIKI KAISHA

Inventor： YOSHIHIRO UETA ,  Keisuke KITANO

IPC: H10K50/115 ,  H10K59/122

CPC classification number: H10K50/115 ,  H10K59/122

Abstract: A light-emitting device includes: a first electrode; a second electrode; a light-emitting layer disposed between the first electrode and the second electrode; and a hole transport layer disposed between the first electrode and the light-emitting layer, wherein the light-emitting layer includes a first quantum dot including a first core with an emission peak in a visible light region, and a second quantum dot including a second core with an emission peak in a near-ultraviolet region or an ultraviolet region.

公开(公告)号：US20230125015A1

公开(公告)日：2023-04-20

申请号：US17911606

申请日：2020-03-25

Applicant: SHARP KABUSHIKI KAISHA

Inventor： YOSHIHIRO UETA ,  HISAYUKI UTSUMI

IPC: G09G3/3225 ,  H10K50/115 ,  H10K50/818

Abstract: A light-emitting device includes a first electrode, a second electrode facing the first electrode, a light-emitting layer provided between the first electrode the second electrode and including a phosphor, a layered body including a metal layer, a first insulating layer provided on a second electrode side of the metal layer, and a second insulating layer provided on a light-emitting layer side of the metal layer, and having a thickness that allows electron injection from the second electrode to the light-emitting layer, a first power supply configured to apply a voltage between the first electrode and the second electrode, and a second power supply configured to apply, between the metal layer and the second electrode, a voltage of which polarity of the second polarity is opposite to a polarity of the second electrode of a voltage applied by the first power supply between the first electrode and the second electrode.

公开(公告)号：US20230011839A1

公开(公告)日：2023-01-12

申请号：US17781882

申请日：2019-12-09

Applicant: SHARP KABUSHIKI KAISHA

Inventor： YOSHIHIRO UETA

IPC: H01L51/50 ,  H01L51/52

Abstract: A light-emitting device includes a light-emitting layer, an electron transport layer provided on the light-emitting layer, and a cathode provided on the electron transport layer. A main component of the cathode is a metal boride. With the above configuration, a work function of the cathode is reduced and electron injection efficiency is improved. As a result, luminous efficiency of the light-emitting device is improved.

公开(公告)号：US20220359844A1

公开(公告)日：2022-11-10

申请号：US17769982

申请日：2019-10-29

Applicant: SHARP KABUSHIKI KAISHA

Inventor： YOSHIHIRO UETA

IPC: H01L51/50 ,  H01L51/56

Abstract: A light-emitting element includes, in order of listing, an anode, an hole transport layer, an emission layer, and a cathode. The light-emitting element includes an reducing material disposed in at least a part between the anode and the hole transport layer, being in contact with the anode and the hole transport layer, and containing a reducing material that reduces a layer having the hole transport layer. The reducing material contains, in a structure of the reducing material, hydrogen either at a concentration ratio of 1 to 1 with resect to a base metal, or at a larger concentration ratio than the base metal.

公开(公告)号：US20220238830A1

公开(公告)日：2022-07-28

申请号：US17614938

申请日：2019-06-04

Applicant: SHARP KABUSHIKI KAISHA

Inventor： YOSHIHIRO UETA

IPC: H01L51/50 ,  H01L51/52

Abstract: A light-emitting element includes: an anode; a cathode; a quantum-dot layer provided between the anode and the cathode, and containing quantum dots; and an electron-transport layer provided between the cathode and the quantum-dot layer, and placed in contact with the quantum-dot layer. In an interface between the quantum-dot layer and the electron-transport layer, the quantum-dot layer is greater in ionization potential than the electron-transport layer, and the quantum-dot layer is greater in bandgap than the electron-transport layer.

公开(公告)号：US20220209166A1

公开(公告)日：2022-06-30

申请号：US17602489

申请日：2019-04-11

Applicant: SHARP KABUSHIKI KAISHA

Inventor： YOSHIHIRO UETA

IPC: H01L51/52

Abstract: A light-emitting element includes a first electrode, a light-emitting layer, a first DLC layer formed from diamond-like carbon, a second electrode, and a second DLC layer formed from DLC, wherein the first electrode, the light-emitting layer, the first DLC layer, the second electrode, and the second DLC layer are layered in this order.

公开(公告)号：US20240224682A1

公开(公告)日：2024-07-04

申请号：US17769582

申请日：2019-11-06

Applicant: SHARP KABUSHIKI KAISHA

Inventor： YOSHIHIRO UETA ,  TAZUKO KITAZAWA

IPC: H10K59/32 ,  H10K59/122 ,  H10K59/35 ,  H10K59/80 ,  H10K71/60 ,  H10K102/00

CPC classification number: H10K59/32 ,  H10K59/122 ,  H10K59/352 ,  H10K59/80515 ,  H10K59/80524 ,  H10K71/60 ,  H10K2102/321

Abstract: A display device includes a blue light-emitting layer, a red light-emitting layer disposed so as to overlap the blue light-emitting layer, and a green light-emitting layer disposed so as to overlap the blue light-emitting layer. A light-emitting area of the blue light-emitting layer is greater than a light-emitting area of the red light-emitting layer, and the light-emitting area of the red light-emitting layer is greater than a light-emitting area of the green light-emitting layer.

公开(公告)号：US20240188317A1

公开(公告)日：2024-06-06

申请号：US18279020

申请日：2021-03-30

Applicant: SHARP KABUSHIKI KAISHA

Inventor： YOSHIHIRO UETA ,  YASUSHI ASAOKA ,  Yuma YAGUCHI

IPC: H10K50/115 ,  H10K59/12 ,  H10K59/122 ,  H10K71/12

CPC classification number: H10K50/115 ,  H10K59/1201 ,  H10K59/122 ,  H10K71/12

Abstract: A light-emitting element includes an anode, a light-emitting layer, and a cathode disposed in this order. The light-emitting layer includes a plurality of quantum dots and an insulating material. An average value of a gap between a quantum dot in an end face portion of the light-emitting layer on the anode side and an end face of the light-emitting layer on the anode side is less than an average value of a gap between a quantum dot in an end face portion of the light-emitting layer on the cathode side and an end face of the light-emitting layer on the cathode side. Further, a display device includes a bank separating the light-emitting elements on a subpixel-by-subpixel basis. The light-emitting layer includes a main light-emitting portion including a light-emitting material, and an outer edge portion disposed at a position surrounding the main light-emitting portion in plan view of a substrate and including a deactivation material in which the light-emitting material is deactivated. The bank includes a forwardly tapered face on a side surface, and is in contact with the outer edge portion at the forwardly tapered face.

公开(公告)号：US20240114710A1

公开(公告)日：2024-04-04

申请号：US18273046

申请日：2021-01-22

Applicant: SHARP KABUSHIKI KAISHA

Inventor： YOSHIHIRO UETA

IPC: H10K50/15 ,  H10K50/16

CPC classification number: H10K50/15 ,  H10K50/16

Abstract: A light-emitting element includes: a first electrode; a first charge transport layer; a silicide layer containing silicide; a light-emitting layer; and a second electrode, all of which are provided in this order. The first charge transport layer and the light-emitting layer are adjacent to each other via the silicide layer.

公开(公告)号：US20240099041A1

公开(公告)日：2024-03-21

申请号：US17769573

申请日：2019-10-29

Applicant: SHARP KABUSHIKI KAISHA

Inventor： YOSHIHIRO UETA

IPC: H10K50/115 ,  H10K50/16 ,  H10K77/10

CPC classification number: H10K50/115 ,  H10K50/16 ,  H10K77/10

Abstract: A light-emitting element includes: an anode, a light-emitting layer, a layer capable of transporting electrons, and a cathode, all of which are provided in a stated order; and an insulator layer provided in contact with, and at least partially between, the layer capable of transporting the electrons and the cathode, the insulator layer having a relative permittivity of 2 or higher and 50 or lower. The insulator layer includes a plurality of insulator layers shaped into islands and spaced apart from one another. The insulator layers are distributed non-uniformly in plan view.