公开(公告)号：US20240032320A1

公开(公告)日：2024-01-25

申请号：US18265978

申请日：2020-12-22

Applicant: SHARP KABUSHIKI KAISHA

Inventor： YASUSHI ASAOKA ,  JUN SAKUMA ,  Takahiro ADACHI

IPC: H10K50/115 ,  H10K71/60 ,  H10K71/20

CPC classification number: H10K50/115 ,  H10K71/60 ,  H10K71/221

Abstract: A method of manufacturing a display device includes: a) forming a first pixel electrode and a second pixel electrode; b) forming a first light-emitting layer on the first pixel electrode; c) forming a photosensitive resin layer on the second pixel electrode and on the first light-emitting layer; d) forming a photosensitive resin pattern having an opening on the second pixel electrode and including a structural member e) forming a light-emitting material layer on the photosensitive resin pattern and on an opening bottom portion that is at least a part of the second pixel electrode and that is provided below the opening; and f) forming a second light-emitting layer on the second pixel electrode by lifting off a first lift-off portion that is a part of the photosensitive resin pattern and a second lift-off portion that is a part of the light-emitting material layer, with the structural member being left intact.

公开(公告)号：US20230091271A1

公开(公告)日：2023-03-23

申请号：US17798828

申请日：2020-03-02

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Akira OHSHIMA ,  SHIGERU AOMORI ,  JUN SAKUMA ,  YASUSHI ASAOKA

IPC: H01L51/52

Abstract: A display device includes a substrate and a light-emitting element provided on the substrate. The light-emitting element includes a light-emitting portion and a first light-exiting portion. The light-emitting portion includes, in order from the substrate side, a first electrode, a light-emitting layer, a second electrode, and a light absorption layer. The first light-exiting portion includes a first light-reflecting layer provided at an incline on the substrate, and a first opening provided in the light absorption layer.

公开(公告)号：US20230020955A1

公开(公告)日：2023-01-19

申请号：US17787122

申请日：2019-12-23

Applicant: SHARP KABUSHIKI KAISHA

Inventor： JUN SAKUMA ,  YASUSHI ASAOKA

IPC: H01L27/32 ,  H01L23/00

Abstract: A display device with high operation stability is provided. The display device comprises a first substrate, a second substrate, and a conductive fluid. The first substrate has a first insulating plate and a switching element. The switching element is formed on the first insulating plate. The second substrate has a second insulating plate, a first electrode, a light-emitting layer, and a second electrode. The second insulating plate faces the first insulating plate. The first electrode is formed on the second insulating plate. The light-emitting layer is formed on the first electrode. The second electrode is formed on the light-emitting layer. The second electrode faces the switching element. The conductive fluid is disposed between the first substrate and the second substrate. The conductive fluid electrically connects the switching element and the second electrode.

公开(公告)号：US20220344412A1

公开(公告)日：2022-10-27

申请号：US17763910

申请日：2019-10-21

Applicant: SHARP KABUSHIKI KAISHA

Inventor： SHIGERU AOMORI ,  TSUYOSHI KAMADA ,  YASUSHI ASAOKA

IPC: H01L27/32 ,  H01L51/56 ,  H01L51/52

Abstract: A light-emitting device includes a light-emitting layer that includes, in each of a plurality of pixels: a light-emitting region in which a drive current flows between a first electrode and a second electrode; and a non-light-emitting region in which no drive current flows between the first electrode and the second electrode. The light-emitting region is divided into a plurality of subregions by a non-light-emitting region in a plan view.

公开(公告)号：US20210359028A1

公开(公告)日：2021-11-18

申请号：US17272574

申请日：2018-09-07

Applicant: SHARP KABUSHIKI KAISHA

Inventor： YASUSHI ASAOKA ,  SHIGERU AOMORI

IPC: H01L27/32 ,  H01L27/15 ,  H01L51/56

Abstract: A display device according to an aspect of the disclosure includes: a first subpixel including a first pixel electrode, a second subpixel adjacent to the first subpixel and including a second pixel electrode, and a third subpixel adjacent to the first subpixel and including a third pixel electrode, a first light-emitting layer overlapping the entire first pixel electrode, a second light-emitting layer overlapping the entire second pixel electrode, and a third light-emitting layer overlapping the entire third pixel electrode, wherein an entire circumference of a peripheral edge portion of the first pixel electrode overlaps the first light-emitting layer and at least one of the second light-emitting layer and the third light-emitting layer.

公开(公告)号：US20240284698A1

公开(公告)日：2024-08-22

申请号：US18560922

申请日：2021-07-13

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Kota ADACHI ,  YASUSHI ASAOKA

IPC: H10K50/15 ,  H10K50/115 ,  H10K85/10 ,  H10K101/00 ,  H10K101/30

CPC classification number: H10K50/15 ,  H10K50/115 ,  H10K85/111 ,  H10K85/115 ,  H10K85/151 ,  H10K2101/30 ,  H10K2101/80

Abstract: A light-emitting element includes: a first electrode; a second electrode; a light-emitting layer positioned between the first electrode and the second electrode, and containing quantum dots and a first hole transport material; and a hole transport layer positioned between the first electrode and the light emitting layer, and containing a second hole transport material solubility of which to a solvent in which the quantum dots are soluble is lower than solubility of the first hole transport material. A difference in ionization potential between the second hole transport material and the first hole transport material is smaller than a difference in ionization potential between the second hole transport material and the quantum dots.

公开(公告)号：US20240276847A1

公开(公告)日：2024-08-15

申请号：US18566779

申请日：2021-07-13

Applicant: SHARP KABUSHIKI KAISHA

Inventor： YASUSHI ASAOKA ,  JUN SAKUMA

IPC: H10K59/80 ,  H10K71/60

CPC classification number: H10K59/878 ,  H10K59/80518 ,  H10K59/877 ,  H10K59/879 ,  H10K59/8793 ,  H10K71/60

Abstract: A display device includes subpixels including light-emitting elements; reflective portions provided in part of the subpixels and each having a reflective surface inclined with respect to a surface of a substrate; a high refractive index layer provided on a second electrode, and guiding light, to the reflective surface, entering from the second electrode side at an angle equal to or greater than a total reflection critical angle and transmit light entering at an angle less than the total reflection critical angle; a substrate provided to face the surface; and a spacer forming a gap layer having a certain thickness between the substrate and the high refractive index layer provided at least in a region not overlapping the reflective portions in a plan view, and dispose the substrate away from the reflective portions. The refractive index of the high refractive index layer is higher than that of the gap layer.

公开(公告)号：US20240164198A1

公开(公告)日：2024-05-16

申请号：US18283662

申请日：2021-04-20

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Takahiro ADACHI ,  YASUSHI ASAOKA

IPC: H10K71/15 ,  H10K59/12 ,  H10K59/35

CPC classification number: H10K71/15 ,  H10K59/1201 ,  H10K59/35

Abstract: A method for manufacturing a display device includes forming a first light-emitting layer including forming a red light-emitting layer that serves as a first light-emitting layer and that emits light in a first color at least at a red subpixel serving as a first region on a substrate by using a quantum dot resist serving as a first solution, and including a first light-emitting material and a first solvent, and forming a second light-emitting layer including forming a blue light-emitting layer that serves as a second light-emitting layer and that emits light in a second color different from the first color at least at a blue subpixel serving as a second region on the substrate by using a quantum dot colloid that is a second solution including a second light-emitting material and a second solvent in which a solubility of the first light-emitting material is less than a solubility of the first light-emitting material in the first solvent, the forming a second light-emitting layer being performed after the forming a first light-emitting layer and the red light-emitting layer serving as the first light-emitting layer and the blue light-emitting layer serving as the second light-emitting layer emit light in different regions.

公开(公告)号：US20240081086A1

公开(公告)日：2024-03-07

申请号：US18268259

申请日：2020-12-22

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Sentaro KIDA ,  YASUSHI ASAOKA

IPC: H10K50/115 ,  C09K11/02 ,  C09K11/56 ,  C09K11/88

CPC classification number: H10K50/115 ,  C09K11/02 ,  C09K11/565 ,  C09K11/881 ,  C09K11/883 ,  H10K2101/30

Abstract: A light-emitting element according to the present disclosure includes at least one pair of light-emitting layers formed between a cathode and an anode and the at least one pair of light-emitting layers includes, in a stated order from the cathode, a P-type light-emitting layer and an N-type light-emitting layer adjacent to each other.

公开(公告)号：US20230371343A1

公开(公告)日：2023-11-16

申请号：US18029896

申请日：2021-10-05

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Sentaro KIDA ,  YASUSHI ASAOKA ,  TSUYOSHI KAMADA

IPC: H10K59/80 ,  H10K59/12 ,  H10K59/35

CPC classification number: H10K59/80515 ,  H10K59/1201 ,  H10K59/35 ,  H10K50/115

Abstract: A display device includes a substrate, an insulating film formed over the substrate, a first pixel electrode formed over the insulating film, a first light-emitting layer formed over the first pixel electrode and overlapping the first pixel electrode in a plan view, a second light-emitting layer formed in a recess provided in the insulating film, and a second pixel electrode overlapping the recess in a plan view. At least one of the first light-emitting layer and the second light-emitting layer includes a quantum dot as a light-emitting material.