公开(公告)号：US20220352481A1

公开(公告)日：2022-11-03

申请号：US17763293

申请日：2019-10-08

Applicant: SHARP KABUSHIKI KAISHA

Inventor： TAZUKO KITAZAWA ,  YOSHIHIRO UETA

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

Abstract: A light-emitting device of a transmissive type includes, as subpixels, a red subpixel including a red light-emitting layer, a green subpixel including a green light-emitting layer, and a blue subpixel including a blue light-emitting layer arranged in parallel with one another. The display light-emitting device includes an opaque region that overlaps at least the red subpixel and the green subpixel, each in its entirety, in a plan view and blocks background light, and a transparent region that overlaps at least a portion of the blue subpixel in a plan view and transmits background light.

公开(公告)号：US20220158115A1

公开(公告)日：2022-05-19

申请号：US17434348

申请日：2019-03-04

Applicant: SHARP KABUSHIKI KAISHA

Inventor： TAKAYUKI NAKA ,  YOSHIHIRO UETA ,  NOBORU IWATA

IPC: H01L51/50 ,  H01L27/32 ,  H01L51/00

Abstract: A light-emitting element is provided with an anode, a light-emitting layer including quantum dots, and a cathode. The light-emitting element includes: an electron transport layer provided between the cathode and the light-emitting layer; and a hole tunneling insulating layer provided between the anode and the light-emitting layer and in contact with the anode and the light-emitting layer.

公开(公告)号：US20220115613A1

公开(公告)日：2022-04-14

申请号：US17602996

申请日：2019-04-12

Applicant: SHARP KABUSHIKI KAISHA

Inventor： YOSHIHIRO UETA

IPC: H01L51/50 ,  H01L51/56

Abstract: A technique is provided that improves the efficiency of electron and hole injection in a light-emitting element containing quantum dots in a light-emitting layer thereof and hence improves the luminous efficiency thereof The light-emitting element includes on a substrate: a positive electrode; a negative electrode; a quantum-dot layer between the positive electrode and the negative electrode, the quantum-dot layer including a stack of a plurality of luminous, first quantum dots and a plurality of non-luminous, second quantum dots; a hole transport layer between the positive electrode and the quantum-dot layer; and an electron transport layer between the negative electrode and the quantum-dot layer, the plurality of second quantum dots being more numerous in an electron transport layer side than in a hole transport layer side.

公开(公告)号：US20250151506A1

公开(公告)日：2025-05-08

申请号：US19015667

申请日：2025-01-10

Applicant: SHARP KABUSHIKI KAISHA

Inventor： YUSUKE SAKAKIBARA ,  Masaki YAMAMOTO ,  YOSHIHIRO UETA

IPC: H10K50/115 ,  H10K50/805

Abstract: A light-emitting device includes a first sub-pixel provided with a first light emitter, and a second sub-pixel provided with a second light emitter and constituting, together with the first sub-pixel, one of a plurality of pixels. The first light emitter has a first cathode, a first anode, and a first light-emitting layer containing a first quantum dot and disposed between the first cathode and the first anode. The second light emitter has a second cathode, a second anode, and a second light-emitting layer containing a second quantum dot and disposed between the second cathode and the second anode. The second quantum dot emits light having a longer light-emission wavelength than the first quantum dot. The first light-emitting layer is thicker than the second light-emitting layer.

公开(公告)号：US20240423053A1

公开(公告)日：2024-12-19

申请号：US18741264

申请日：2024-06-12

Applicant: SHARP KABUSHIKI KAISHA

Inventor： YOSHIHIRO UETA

IPC: H10K59/32

Abstract: A display device includes the following: a first light-emitting element having a first emission region; a second light-emitting element adjacent to the first light-emitting element, and having a second emission region; and a third light-emitting element adjacent to both of the first light-emitting element and the second light-emitting element, and having a third emission region. In a plan view, any part of the first emission region, any part of the second emission region, and any part of the third emission region are in positions that are 3-fold rotationally symmetric with each other. Between the first emission region and the second emission region, between the second emission region and the third emission region, and between the third emission region and the first emission region, two sides facing each other in the plan view extend in a direction where the two sides intersect.

公开(公告)号：US20240421142A1

公开(公告)日：2024-12-19

申请号：US18744578

申请日：2024-06-14

Applicant: SHARP KABUSHIKI KAISHA ,  Meijo University

Inventor： YOSHIHIRO UETA ,  Motoaki IWAYA ,  Yoshinobu SUEHIRO ,  Yuta IMAIZUMI ,  Tatsunari SAITO ,  Naoki HASEGAWA ,  Keigo IMURA

IPC: H01L25/18 ,  H01L27/15

Abstract: A light-emitting device in accordance with the present disclosure includes: a first semiconductor layer including a first light-emitting layer, and a second semiconductor layer including a second light-emitting layer, wherein the first semiconductor layer has a first sidewall adjacent to a second sidewall of the second semiconductor layer over a gap, and a normal to the first sidewall is not parallel to a normal to the second sidewall (α≠0°).

公开(公告)号：US20240349571A1

公开(公告)日：2024-10-17

申请号：US18272915

申请日：2021-01-22

Applicant: SHARP KABUSHIKI KAISHA

Inventor： TAZUKO KITAZAWA ,  YOSHIHIRO UETA ,  EIJI SATOH ,  Zenken KIN

IPC: H10K59/50 ,  H10K50/115 ,  H10K59/38

CPC classification number: H10K59/50 ,  H10K50/115 ,  H10K59/38

Abstract: This display device includes a first electrode and a second electrode overlapping each other in a plan view, a light-emitting layer containing quantum dots and overlapping the first electrode and the second electrode in a plan view, a third electrode capable of forming an electrical field between the second electrode and third electrode, and an optical adjustment element overlapping the light-emitting layer in a plan view and having light transmittance that changes in accordance with a potential difference between the second electrode and the third electrode.

公开(公告)号：US20240141227A1

公开(公告)日：2024-05-02

申请号：US18279573

申请日：2021-06-28

Applicant: SHARP KABUSHIKI KAISHA

Inventor： YOSHIHIRO UETA ,  YASUSHI ASAOKA ,  Yuma YAGUCHI

IPC: C09K11/06 ,  H10K50/115 ,  H10K85/30

CPC classification number: C09K11/06 ,  H10K50/115 ,  H10K85/30

Abstract: A light-emitting element includes a light-emitting layer, wherein the light-emitting layer includes a quantum dot, a halogen element, and a coordination compound that can coordinate to the quantum dot, the coordination compound includes a compound having one or more and n or less (where n is a plural number) carbon-hydrogen bonds, or a compound having n chain structures with different elements bonded at any two coordination positions of an element that can substantially have a coordination number of four or greater, and a mass ratio between the coordination compound and the quantum dot is 0.5 or less.

公开(公告)号：US20240103323A1

公开(公告)日：2024-03-28

申请号：US18273129

申请日：2021-01-22

Applicant: SHARP KABUSHIKI KAISHA

Inventor： TAZUKO KITAZAWA ,  YOSHIHIRO UETA ,  EIJI SATOH

IPC: G02F1/1343 ,  G02F1/1335

CPC classification number: G02F1/134381 ,  G02F1/133531

Abstract: A display device includes: a light-emitting element including a first electrode and a second electrode overlapping each other in a plan view, and a light-emitting layer placed between the first electrode and the second electrode; a third electrode capable of forming an electrical field between the second electrode and the third electrode; and an optical adjustment element overlapping the light-emitting layer in a plan view and having light transmittance that changes in accordance with a potential difference between the second electrode and the third electrode.

公开(公告)号：US20240072101A1

公开(公告)日：2024-02-29

申请号：US18230626

申请日：2023-08-05

Applicant: SHARP KABUSHIKI KAISHA ,  Meijo University

Inventor： YOSHIHIRO UETA ,  Motoaki IWAYA ,  Yoshinobu SUEHIRO ,  Yuta IMAIZUMI ,  Tatsunari SAITO

IPC: H01L27/15

CPC classification number: H01L27/156

Abstract: An LED array includes: a substrate having a depressing-projecting structure formed on a surface of the substrate; a planarization layer formed on the depressing-projecting structure; a plurality of micro LED elements each of which is formed on the planarization layer; and a stray light attenuating groove formed between a pair of adjacent micro LED elements among the plurality of micro LED elements, and extending from toward the pair of micro LED elements to toward the depressing-projecting structure at least part way of the planarization layer.