公开(公告)号：US12224306B2

公开(公告)日：2025-02-11

申请号：US17395804

申请日：2021-08-06

Applicant: Samsung Display Co., LTD.

Inventor： Eun A Cho ,  Jong Hyuk Kang ,  Won Ho Lee

IPC: H01L27/15 ,  H01L29/786 ,  H01L33/24 ,  H01L33/38

Abstract: A pixel includes a light emitting area including a central portion and an outer portion, a non-light emitting area surrounding the light emitting area, a first electrode and a second electrode that are spaced apart from each other in the light emitting area, and a first light emitting element disposed between the first electrode and the second electrode. The first electrode and the second electrode are spaced apart from each other at a first interval in the central portion, and are spaced apart from each other at a second interval in the outer portion. The second interval is larger than the first interval. An interval between the first electrode and the second electrode gradually increases from the central portion to the outer portion.

公开(公告)号：US12100784B2

公开(公告)日：2024-09-24

申请号：US17610062

申请日：2020-03-04

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hae Yun Choi ,  Jong Hyuk Kang ,  Hyun Deok Im ,  Jae Hoon Jung ,  Han Su Kim ,  Eun A Yang ,  Hyun Min Cho

IPC: H01L33/38 ,  H01L25/075 ,  H01L33/00 ,  H01L33/50 ,  H01L33/62

CPC classification number: H01L33/382 ,  H01L25/0753 ,  H01L33/005 ,  H01L33/505 ,  H01L33/62 ,  H01L2933/0016

Abstract: A pixel includes a first bank pattern and a second bank pattern disposed on a base layer; a first electrode and a second electrode disposed on the first bank pattern and the second bank pattern, and spaced apart from each other; a light emitting element disposed between the first electrode and the second electrode, and including a first end electrically connected to the first electrode, and a second end electrically connected to the second electrode; and at least one insulating layer overlapping the light emitting element and at least one of the first electrode and the second electrode. The at least one insulating layer includes at least one of a first opening adjacent to the first end of the light emitting element and a second opening adjacent to the second end of the light emitting element.

公开(公告)号：US12094857B2

公开(公告)日：2024-09-17

申请号：US17290095

申请日：2019-05-31

Applicant: Samsung Display Co., LTD.

Inventor： Jae Hoon Jung ,  Jong Hyuk Kang ,  Sung Chan Jo

IPC: H01L25/075 ,  C09D11/037 ,  C09D11/322 ,  C09D11/38 ,  C09D11/50 ,  H01L25/16 ,  H01L33/44

CPC classification number: H01L25/0753 ,  C09D11/037 ,  C09D11/322 ,  C09D11/38 ,  C09D11/50 ,  H01L25/167 ,  H01L33/44

Abstract: The invention relates to a light-emitting element dispersing agent; a light-emitting element ink comprising the same; and a method for producing a display device. This method for producing a display device may comprise spraying an ink including a solvent, light emitting elements, and a light emitting element dispersant onto a target substrate provided with a first electrode and a second electrode, applying a voltage to the first electrode and the second electrode to generate an electric field on the target substrate, irradiating the ink sprayed on the target substrate with light to form a dispersant fragment in which the light emitting element dispersant is decomposed, and removing the solvent and the dispersant fragment of the ink.

公开(公告)号：US12074171B2

公开(公告)日：2024-08-27

申请号：US17422426

申请日：2019-07-09

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Won Sik Oh ,  Yo Han Lee ,  Hyun Min Cho ,  Jong Hyuk Kang ,  Dae Hyun Kim

IPC: H01L27/12 ,  H01L25/16 ,  H01L23/00 ,  H01L33/62

CPC classification number: H01L27/124 ,  H01L25/167 ,  H01L24/24 ,  H01L24/95 ,  H01L33/62 ,  H01L2224/24147 ,  H01L2224/95145 ,  H01L2924/12041

Abstract: A display device may include a pixel disposed in a display area. The pixel may include: a first electrode extending in a first direction; a second electrode including a first electrode part spaced apart from the first electrode in a direction intersecting with the first direction and extending in the first direction, a second electrode part extending from the first electrode part in a second direction, and a third electrode part extending form the second electrode part in the first direction; a third electrode including at least one area spaced apart from the third electrode part in the direction intersecting with the first direction and extending in the first direction; a first light emitting element connected between the first electrode and the second electrode; and a second light emitting element connected between the second electrode and the third electrode.

公开(公告)号：US12033988B2

公开(公告)日：2024-07-09

申请号：US17382825

申请日：2021-07-22

Applicant: Samsung Display Co., LTD.

Inventor： In Hyuk Kim ,  Dong Gyun Kim ,  Jae Hoon Jung ,  Jin Oh Kwag ,  Hee Yeon Yoo ,  Sung Chan Jo ,  Jeong In Choi ,  Hye Jung Hong ,  Jong Hyuk Kang ,  Dong Eon Lee ,  Hyun Min Cho

IPC: H01L25/075 ,  H01L21/68 ,  H01L21/78 ,  H01L33/00

CPC classification number: H01L25/0753 ,  H01L21/68 ,  H01L21/7806 ,  H01L33/005

Abstract: An apparatus includes a base including a receiving portion that receives a substrate on which semiconductor elements are disposed; and at least one ultrasonic generator that generates and applies ultrasonic waves to the substrate placed in the base.

公开(公告)号：US12017453B2

公开(公告)日：2024-06-25

申请号：US17802897

申请日：2020-06-08

Applicant: Samsung Display Co., LTD.

Inventor： Jong Hyuk Kang ,  Jin Oh Kwag ,  Won Hee Nam ,  Suk Beom You ,  Hyun Min Cho

IPC: B41J2/045 ,  B41J2/11 ,  B41J2/14 ,  B41J2/175

CPC classification number: B41J2/04593 ,  B41J2/11 ,  B41J2/14 ,  B41J2/17596 ,  B41J2002/14491

Abstract: Provided are an inkjet printing device, a method for printing bipolar elements, and a method for manufacturing a display device. The inkjet printing device includes an inkjet head disposed above a stage and including a plurality of nozzles through which ink including bipolar elements each having areas doped with partially different polarities is discharged; an actuator disposed in the inkjet head and adjusting an amount of droplet of the ink discharged through the plurality of nozzles; and at least one sensing part disposed in the inkjet head and measuring a number of bipolar elements discharged through the plurality of nozzles.

公开(公告)号：US11983350B2

公开(公告)日：2024-05-14

申请号：US17255987

申请日：2018-09-21

Applicant: Samsung Display Co., LTD.

Inventor： Jong Hyuk Kang ,  Hyun Min Cho ,  Dae Hyun Kim ,  Hyun Deok Im

IPC: H01L25/075 ,  G06F3/01 ,  G06F3/041 ,  G06F3/04883 ,  H01L27/12 ,  H01L33/50 ,  H01L33/58 ,  H01L33/62 ,  B82Y20/00

CPC classification number: G06F3/0414 ,  G06F3/016 ,  G06F3/0412 ,  G06F3/04883 ,  H01L25/0753 ,  H01L27/1214 ,  H01L33/502 ,  H01L33/505 ,  H01L33/58 ,  H01L33/62 ,  B82Y20/00 ,  G06F2203/014 ,  H01L2933/0066

Abstract: A display device comprises first and second pixels, a light-emitting layer, color conversion layers, and color filter layers, the light-emitting layer comprising first and second light-emitting elements in the first and second pixels, wherein the color conversion layers comprise first and second color conversion layers in the first and second pixels, the color filter layers comprise first and second color filter layers in the first and second pixels, the first and second light-emitting elements emit first light having a central wavelength range of a first wavelength, the first and second color conversion layers contain color conversion particles converting the first light into second light having a central wavelength range of a second wavelength longer than the first wavelength, the first color filter layer transmits the first light and blocks the second light, and the second color filter layer transmits the second light and blocks transmission of the first light.

公开(公告)号：US11811012B2

公开(公告)日：2023-11-07

申请号：US17843314

申请日：2022-06-17

Applicant: Samsung Display Co., Ltd.

Inventor： Dae Hyun Kim ,  Hyun Min Cho ,  Hyun Deok Im ,  Jong Hyuk Kang ,  Keun Kyu Song ,  Joo Yeol Lee ,  Bek Hyun Lim ,  Sung-Chan Jo

IPC: H01L33/62 ,  H01L25/075 ,  H01L25/16 ,  H01L27/12 ,  H01L33/38 ,  H01L33/24 ,  H01L33/60

CPC classification number: H01L33/62 ,  H01L25/0753 ,  H01L25/167 ,  H01L27/1259 ,  H01L33/38 ,  H01L33/24 ,  H01L33/60 ,  H01L2933/0016 ,  H01L2933/0066

Abstract: A light emitting device may include: a substrate including a plurality of unit light emitting regions; and first to fourth insulating layers sequentially on the substrate. Each of the unit light emitting regions may include: at least one light emitting element on the first insulating layer, the at least one light emitting element having a first end portion and a second end portion in a length direction thereof; first and second partition walls on the substrate, and the first and second partition walls being spaced apart from each other; a first reflective electrode on the first partition wall and a second reflective electrode on the second partition wall; a first contact electrode on the first reflective electrode, the first contact electrode connecting the first reflective electrode and the first end portion of the light emitting element; a second contact electrode on the second reflective electrode, the second contact electrode connecting the second reflective electrode and the second end portion of the light emitting element; and a conductive pattern provided between the first insulating layer and the first contact electrode, the conductive pattern surrounding the first and second reflective electrodes when viewed on a plane.

公开(公告)号：US20230187474A1

公开(公告)日：2023-06-15

申请号：US18166985

申请日：2023-02-09

Applicant: Samsung Display Co., LTD.

Inventor： Dae Hyun Kim ,  Jong Hyuk Kang ,  Joo Yeol Lee ,  Hyun Deok Im ,  Hyun Min Cho

IPC: H01L27/15 ,  H01L33/44 ,  H01L33/20 ,  H01L27/12 ,  H01L33/38 ,  H01L29/786 ,  H01L25/075 ,  H01L25/16 ,  H01L33/60

CPC classification number: H01L27/156 ,  H01L33/44 ,  H01L33/20 ,  H01L27/124 ,  H01L33/387 ,  H01L29/78633 ,  H01L25/0753 ,  H01L25/167 ,  H01L27/1255 ,  H01L33/385 ,  H01L33/60 ,  H01L33/405

Abstract: A light emitting device, includes: a substrate; a light emitting element on the substrate, the light emitting element having a first end portion and a second end portion arranged in a longitudinal direction; one or more partition walls disposed on the substrate, the one or more partition walls being spaced apart from the light emitting element; a first reflection electrode adjacent the first end portion of the light emitting element; a second reflection electrode adjacent the second end portion of the light emitting element; a first contact electrode connected to the first reflection electrode and the first end portion of the light emitting element; an insulating layer on the first contact electrode, the insulating layer having an opening exposing the second end portion of the light emitting element and the second reflection electrode to the outside; and a second contact electrode on the insulating layer.

公开(公告)号：US11127914B2

公开(公告)日：2021-09-21

申请号：US16903278

申请日：2020-06-16

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyun Deok Im ,  Jong Hyuk Kang ,  Dae Hyun Kim ,  Joo Yeol Lee ,  Chi O Cho ,  Hyun Min Cho

IPC: H01L51/50 ,  H01L25/075 ,  H01L51/05 ,  H01L51/52 ,  H01L27/32 ,  H01L33/62 ,  F21Y107/00

Abstract: A light emitting device includes a plurality of unit light emitting regions on a substrate. At least one of the unit light emitting regions includes at least one pair of first and second electrodes that are spaced apart, at least one first bar-type LED in a first layer on the substrate, and at least one second bar-type LED in a second layer on the substrate. At least one of the first bar-type LED or the second bar-type LED is electrically connected between the first electrode and the second electrode.