公开(公告)号：US20230145433A1

公开(公告)日：2023-05-11

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 ,  B41J2/175 ,  B41J2/14

CPC classification number: B41J2/04593 ,  B41J2/11 ,  B41J2/17596 ,  B41J2/14 ,  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：US20230006103A1

公开(公告)日：2023-01-05

申请号：US17784455

申请日：2020-11-13

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jin Oh KWAG ,  Seung Lyong BOK

IPC: H01L33/38 ,  G09F9/302 ,  G06F3/14 ,  G09F9/33 ,  H01L33/62 ,  H01Q1/24

Abstract: A display device includes a pixel circuit layer including a plurality of transistors, a first electrode and a second electrode disposed on a same layer on the pixel circuit layer, a light emitting element disposed between the first electrode and the second electrode, and an antenna pattern disposed on the light emitting element.

公开(公告)号：US20220093828A1

公开(公告)日：2022-03-24

申请号：US17297950

申请日：2019-08-23

Applicant: Samsung Display Co., Ltd.

Inventor： Jin Oh KWAG ,  Hyun Deok IM ,  Keun Kyu SONG ,  Sung Chan JO ,  Hyun Min CHO

IPC: H01L33/38 ,  H01L27/15

Abstract: A display device is provided. The display device comprises: a first electrode and a second electrode spaced apart from and arranged to face the first electrode; a first insulating layer arranged to cover at least a partial region of the first and second electrodes; a shielding electrode layer which is arranged on the first insulating layer and which does not overlap at least a portion of the first and second electrodes; and at least one light-emitting element arranged between the first and second electrodes so as to be spaced apart from the shielding electrode layer, wherein the at least one light-emitting element can be arranged in a region in which the shielding electrode layer does not overlap the first and second electrodes.

公开(公告)号：US20220037568A1

公开(公告)日：2022-02-03

申请号：US17297326

申请日：2019-08-23

Applicant: Samsung Display Co., LTD.

Inventor： Jin Oh KWAG ,  Dae Hyun KIM ,  Keun Kyu SONG ,  Sung Chan JO ,  Hyun Min CHO

IPC: H01L33/58 ,  H01L33/38 ,  H01L27/15 ,  H01L33/50

Abstract: A display device includes a first electrode and a second electrode that are spaced apart from and facing each other; a light-blocking layer disposed above the first electrode and the second electrode; and at least one light-emitting element disposed between the first electrode and the second electrode. The light-blocking layer includes a light-blocking portion absorbing light and an opening pattern. The light-blocking portion includes an area partially overlapping the first electrode and the second electrode. The at least one opening pattern exposes portions of the first and second electrodes facing each other and at least a portion of an area between the first and second electrodes facing each other. The at least one light-emitting element overlaps the at least one opening pattern.

公开(公告)号：US20210351171A1

公开(公告)日：2021-11-11

申请号：US17278114

申请日：2019-03-21

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Je Won YOO ,  Dae Hyun KIM ,  Bek Hyun LIM ,  Myeong Hee KIM ,  Chang Il TAE ,  Hyun Min CHO ,  Keun Kyu SONG ,  Jin Oh KWAG

IPC: H01L25/16 ,  H01L33/54 ,  H01L33/44 ,  H01L23/00

Abstract: A display device may include: a substrate including a display area and a non-display area; and pixels disposed on the display area, and each including sub-pixels, each sub-pixel including a pixel circuit layer, and a display element layer including a light emitting element. The display element layer includes first and second electrodes spaced apart from each other; a first insulating layer disposed between the pixel circuit layer and the light emitting element; and a second insulating layer disposed on the light emitting element and filling spaces between the first insulating layer and ends of the light emitting element. The light emitting element includes a first conductive semiconductor layer, an active layer enclosing at least one side of the first conductive semiconductor layer, a second conductive semiconductor layer enclosing the active layer, an electrode layer enclosing the second conductive semiconductor layer, and an insulating film covering the electrode layer.

公开(公告)号：US20210336142A1

公开(公告)日：2021-10-28

申请号：US17278126

申请日：2019-04-08

Applicant: Samsung Display Co., LTD.

Inventor： Heung Cheol JEONG ,  Byung Chul LEE ,  Myung Soo HUH ,  Jin Oh KWAG ,  Do Hun LEE

IPC: H01L51/00

Abstract: An inkjet printing apparatus, a dipole alignment method, and a display device manufacturing method are provided. The inkjet printing apparatus includes a stage, a print head part disposed above the stage, and an electric field generating part that provides an electric field to a space between the stage and the print head part. The dipole alignment method includes providing an electric field at an area above a target substrate, spraying ink including a dipole onto the target substrate through the area, and landing the dipole on the target substrate. The display device manufacturing method includes preparing a base layer on which first and second electrodes are disposed, spraying ink including a light emitting element onto the base layer through the area, landing the light emitting element between the first and second electrodes.

公开(公告)号：US20210327954A1

公开(公告)日：2021-10-21

申请号：US16338449

申请日：2018-09-21

Applicant: Samsung Display Co., Ltd.

Inventor： Hyun Min CHO ,  Dae Hyun KIM ,  Jin Oh KWAG ,  Dong Hyun KIM ,  Keun Kyu SONG ,  Hyun Deok IM ,  Sung Chan JO

IPC: H01L27/15 ,  H01L33/38 ,  H01L33/62

Abstract: A display device comprises a first electrode, a second electrode disposed to be spaced apart from the first electrode and face the first electrode, a first insulating layer disposed to cover the first electrode and the second electrode, a second insulating layer disposed on at least a part of the first insulating layer and exposing at a part of a region where the first electrode and the second electrode overlaps the first insulating layer and at least one light emitting element on the exposed first insulating layer between the first electrode and the second electrode, wherein the second insulating layer includes at least one opening exposing the first insulating layer and disposed to be spaced apart from each other on a region where the first electrode and the second electrode face each other, and a bridge portion between the openings, and the light emitting element is disposed on the opening.

公开(公告)号：US20210320089A1

公开(公告)日：2021-10-14

申请号：US17276776

申请日：2019-03-21

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jong Hyuk KANG ,  Hae Yun CHOI ,  Han Su KIM ,  Eun A YANG ,  Hyun Min CHO ,  Keun Kyu SONG ,  Jin Oh KWAG

IPC: H01L25/075 ,  H01L33/00

Abstract: An apparatus for manufacturing a light emitting display device includes a substrate transfer stage including a plurality of support plates arranged at an interval in a first direction, each of the plurality of support plates extending in a second direction; and at least one electric-field application module disposed on at least one side of the substrate transfer stage. The at least one electric-field application module includes a probe head including at least one probe pin; and a driver connected to the probe head to move the probe head at least up and down.

公开(公告)号：US20210200366A1

公开(公告)日：2021-07-01

申请号：US17138090

申请日：2020-12-30

Applicant: Samsung Display Co., LTD.

Inventor： Seung Lyong BOK ,  Jong In BAEK ,  Young Seok SEO ,  Sun Mi YU ,  Jong Hyun LEE ,  Jin Oh KWAG

IPC: G06F3/041 ,  G06K9/00 ,  G06F3/044 ,  G06F3/046 ,  H01L31/12 ,  H01L27/12 ,  H01L31/105 ,  H01L27/32 ,  H01L51/52

Abstract: A display device includes a thin-film transistor layer disposed on a substrate and including thin-film transistors; and an emission material layer disposed on the thin-film transistor layer. The emission material layer includes light-emitting elements each including a first light-emitting electrode, an emissive layer and a second light-emitting electrode, light-receiving elements each including a first light-receiving electrode, a light-receiving semiconductor layer and a second light-receiving electrode, and a first bank disposed on the first light-emitting electrode and defining an emission area of each of the light-emitting elements. The light-receiving elements are disposed on the first bank.

公开(公告)号：US20210120324A1

公开(公告)日：2021-04-22

申请号：US17070527

申请日：2020-10-14

Applicant: Samsung Display Co., LTD.

Inventor： Young Seok SEO ,  Jung Hun NOH ,  Seung Lyong BOK ,  Yi Joon AHN ,  Sun Mi YU ,  Jin Oh KWAG

IPC: H04R1/02 ,  G06F3/041 ,  G06F3/044 ,  H04R3/00 ,  H01L27/32 ,  H01L51/52

Abstract: A display device includes a display panel including a display layer including light-emitting elements disposed on a substrate, and a sensor electrode layer disposed on the display layer. The sensor electrode layer includes a first sound electrode and a second sound electrode; a vibration layer electrically contacting the first sound electrode and the second sound electrode and being deformed in response to a first sound driving voltage applied to the first sound electrode and a second sound driving voltage applied to the second sound electrode; and sensor electrodes disposed on the vibration layer. The sensor electrodes sense an input.