公开(公告)号：US20220123271A1

公开(公告)日：2022-04-21

申请号：US17431666

申请日：2019-02-20

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Masumi KUBO

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

Abstract: A light-emitting device (1) is provided with, on a substrate (3), light-emitting elements (2R, 2G, 2B) each including a first electrode (4), a second electrode (12), and a quantum dot layer (8) interposed between the first electrode and the second electrode. The quantum dot layer is provided with quantum dots (20R, 20G, 20B) including cores (22R, 22G, 22B) and shells (24R, 24G, 24B) with which the cores are coated, and ligands (18R, 18G, 18B) to coordinate with the quantum dots. A step of forming the quantum dot layer includes a step of light irradiation configured to form an exposure region where, by the light irradiation using a photomask, the ligand melts and a solvent of a solution in which the ligand is dispersed vaporizes, and a non-exposure region at a position different from a position on which the light irradiation is performed.

公开(公告)号：US20130114029A1

公开(公告)日：2013-05-09

申请号：US13692011

申请日：2012-12-03

Applicant: Sharp Kabushiki Kaisha

Inventor： Akihiro SHORAKU ,  Toshihide TSUBATA ,  Koichi MIYACHI ,  lichiro INOUE ,  Akihiro YAMAMOTO ,  Yoshito HASHIMOTO ,  Masumi KUBO ,  Akihito JINDA

IPC: G02F1/1337

CPC classification number: G02F1/1337 ,  G02F1/133512 ,  G02F1/133753 ,  G02F1/1393 ,  G02F2001/133757

Abstract: A liquid crystal display device includes a vertical alignment liquid crystal layer, first and second substrates, first and second electrodes, and a pixel region which includes first, second, third and fourth liquid crystal domains in which liquid crystal molecules are tilted in first, second, third and fourth directions, respectively. The first liquid crystal domain is located close to at least a part of an edge of the first electrode, the second liquid crystal domain is located close to at least a part of another edge of the first electrode, the third liquid crystal domain is located close to at least a part of still another edge of the first electrode, and the fourth liquid crystal domain is located close to at least a part of yet another edge of the first electrode.

Abstract translation: 液晶显示装置包括垂直取向液晶层，第一和第二基板，第一和第二电极以及包括第一，第二，第三和第四液晶畴的像素区域，其中液晶分子在第一，第二 ，第三和第四个方向。 第一液晶畴位于第一电极的边缘的至少一部分附近，第二液晶畴位于第一电极的另一边缘的至少一部分附近，第三液晶畴位于 到第一电极的另一边缘的至少一部分，并且第四液晶畴位于第一电极的另一边缘的至少一部分附近。

公开(公告)号：US20240301280A1

公开(公告)日：2024-09-12

申请号：US18034339

申请日：2020-11-20

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Masumi KUBO

IPC: C09K11/06

CPC classification number: C09K11/06 ,  C09K2211/18

Abstract: A quantum dot production method for producing quantum dots made of core particles and shells formed on outer surfaces of the core particles, the quantum dot production method includes: a preparing step of mixing a solution and a shell precursor together, in order to prepare a reaction solution, the solution containing a solvent and the core particles: a heating step of irradiating the core particles with light either in the solution or the reaction solution and generating heat, in order to heat surroundings of the core particles; and a shell forming step of causing reaction of the shell precursor on the outer surfaces of the core particles in the reaction solution, in order to form the shells on the outer surfaces of the core particles.

公开(公告)号：US20230090605A1

公开(公告)日：2023-03-23

申请号：US17795086

申请日：2020-02-06

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Masumi KUBO

IPC: H01L33/04

Abstract: A method for manufacturing a light-emitting device includes performing application, performing temperature raising, and performing first light irradiation. In the performing application, a solution including quantum dots, a ligand, an inorganic precursor, and a solvent is applied on a position overlapping with the substrate. The quantum dots each includes a core and a first shell coating the core. In the performing temperature raising, a temperature is raised until the ligand melts and the solvent vaporizes after the performing application. In the performing first light irradiation, light irradiation is performed after the performing temperature raising. In the performing first light irradiation, the inorganic precursor is epitaxially grown around the first shell to form a second shell coating the first shell, and an inorganic film in which the inorganic precursor is epitaxially grown at an interface between the quantum dot layer and the first charge transport layer is formed.

公开(公告)号：US20230089691A1

公开(公告)日：2023-03-23

申请号：US17795083

申请日：2020-02-06

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Masumi KUBO

IPC: H01L33/26 ,  H05B33/14 ,  H01L33/04

Abstract: A method for manufacturing a light-emitting device includes forming the quantum dot layer, wherein the forming the quantum dot layer includes performing first application of applying, on a position overlapping with the substrate, a first solution including quantum dots, a ligand, a first inorganic precursor, and a first solvent, the quantum dots each including a core and a first shell coating the core, the ligand coordinating with each of the quantum dots, performing temperature raising of raising a temperature until the ligand melts and the first solvent vaporizes after the performing first application, performing first temperature lowering of lowering a temperature to a melting point of the ligand or lower after the performing temperature raising, and performing first light irradiation of epitaxially growing the first inorganic precursor around the first shell by first light irradiation after the performing first temperature lowering to form a second shell coating the first shell.

公开(公告)号：US20230284473A1

公开(公告)日：2023-09-07

申请号：US18016766

申请日：2020-07-29

Applicant: SHARP KABUSHIKI KAISHA

Inventor： HIROHISA YAMADA ,  YOSHIHIRO UETA ,  Masumi KUBO ,  Masaki YAMAMOTO

IPC: H10K50/824 ,  H05B33/26 ,  H05B33/14 ,  H10K50/16 ,  H10K50/19

CPC classification number: H10K50/824 ,  H05B33/26 ,  H05B33/145 ,  H10K50/16 ,  H10K50/19

Abstract: In a light-emitting device, a first electrode, a light-emitting layer, and a second electrode are disposed in the order recited. Moreover, a charge transport layer is disposed between the first electrode and the light-emitting layer and/or between the second electrode and the light-emitting layer. A third electrode at least partly overlaps the light-emitting layer. Moreover, the third electrode is disposed between the charge transport layer and the light-emitting layer.

公开(公告)号：US20230058785A1

公开(公告)日：2023-02-23

申请号：US17793643

申请日：2020-02-06

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Masumi KUBO

IPC: H01L33/00

Abstract: A method for manufacturing a quantum dot layer includes: performing first application of applying, to a position overlapping with a substrate, a first solution including a plurality of particles including a core and a first ligand, a first inorganic precursor, and a first solvent; performing first heating of heating first solution to a first temperature or higher after the performing first application, the first temperature being a higher temperature of a melting point of the first ligand and a boiling point of the first solvent; and performing second heating of heating the first inorganic precursor to a second temperature after the performing first heating, the second temperature being higher than the first temperature and being a temperature, at which the first inorganic precursor epitaxially grows around the core and at which a first shell configured to coat the core is formed to form a plurality of first quantum dots.

公开(公告)号：US20220149338A1

公开(公告)日：2022-05-12

申请号：US17430489

申请日：2019-02-20

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Masumi KUBO

IPC: H01L51/56 ,  H01L51/50

Abstract: A method for manufacturing a light-emitting device that is provided with, on a substrate, a light-emitting element including a first electrode, a second electrode, and a quantum dot layer, the method including: forming the quantum dot layer, the forming the quantum dot layer including performing first application that involves applying a first solution, performing first heating that involves raising an atmospheric temperature around the substrate to a temperature equal to or higher than a first temperature, and performing second heating that involves raising the atmospheric temperature to a second temperature, wherein the first solution contains a first solvent, quantum dots, a ligand, the quantum dot includes a core and a first shell, the second temperature is a temperature to form a second shell, and at least one set of the quantum dots adjacent to each other is connected to each other via the second shell.

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：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.