公开(公告)号：US20240347005A1

公开(公告)日：2024-10-17

申请号：US18753689

申请日：2024-06-25

Applicant: Samsung Display Co., Ltd.

Inventor： KEUNWOO KIM

IPC: G09G3/3233 ,  G09G3/32

CPC classification number: G09G3/3233 ,  G09G3/32 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/08 ,  G09G2320/0257 ,  G09G2320/045 ,  G09G2330/021

Abstract: A pixel includes a first switching transistor, a second switching transistor, a driving transistor, and a light emitting element. The first switching transistor includes a first terminal to which a bias power supply voltage is applied, a second terminal connected to a first node, and a gate terminal to which a light emitting element initialization signal is applied. The second switching transistor includes a first terminal connected to the first node, a second terminal connected to a second node, and a gate terminal to which the light emitting element initialization signal is applied. The driving transistor includes a first terminal connected to the second node, a second terminal connected to a third node, and a gate terminal. The light emitting element is connected to the driving transistor. The first node is connected to the third node, and the bias power supply voltage is applied to the second and third nodes.

公开(公告)号：US20230075763A1

公开(公告)日：2023-03-09

申请号：US17900625

申请日：2022-08-31

Applicant: Samsung Display Co., LTD.

Inventor： KEUNWOO KIM ,  TAEWOOK KANG ,  JOON WOO BAE ,  YU-GWANG JEONG ,  SUNGWON CHO ,  JAEHWAN CHU ,  SANGGUN CHOI

IPC: H01L27/32 ,  G09G3/3233 ,  G09G3/20 ,  H01L51/56

Abstract: A display device includes: a substrate; and a plurality of pixel circuits on the substrate comprising: an active layer including a first region and a second region; a gate insulating layer on the active layer, the gate insulating layer including a first insulating layer overlapping the first region and the second region, a second insulating layer on the first insulating layer and overlapping the first region, and a third insulating layer on the second insulating layer and overlapping the first region and the second region; and a first conductive layer on the gate insulating layer, the first conductive layer including a first gate electrode overlapping the first region to form a driving transistor, and a second gate electrode overlapping the second region to form a switching transistor.

公开(公告)号：US20220392986A1

公开(公告)日：2022-12-08

申请号：US17750565

申请日：2022-05-23

Applicant: Samsung Display Co., LTD.

Inventor： KEUNWOO KIM ,  TAEWOOK KANG ,  SANGGUN CHOI ,  SHIN IL CHOI

IPC: H01L27/32

Abstract: A display device includes in order along a thickness direction of the display device an active pattern including a first region, a second region spaced apart from the first region in a first direction, and a third region between the first region and the second region, a first capacitor electrode which overlaps the third region of the active pattern to define portions of a driving transistor, and a second capacitor electrode which overlaps the first capacitor electrode and defines a groove corresponding to a portion of the first capacitor electrode.

公开(公告)号：US20210343821A1

公开(公告)日：2021-11-04

申请号：US17158362

申请日：2021-01-26

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： JAEHWAN CHU ,  KEUNWOO KIM ,  TAEWOOK KANG ,  DOONA KIM ,  SANGSUB KIM ,  BUMMO SUNG ,  DOKYEONG LEE ,  YONGSU LEE

IPC: H01L27/32 ,  G09G3/3233

Abstract: An organic light-emitting display apparatus includes an organic light-emitting diode, a driving transistor configured to control an amount of electric current flowing to the organic light-emitting diode from a power line, a compensation transistor configured to diode-connect the driving transistor in response to a voltage applied to first and second compensation gate electrodes of the compensation transistor, and a gate insulating layer between the compensation gate electrodes and a compensation active region of a compensation transistor. A layer structure of the gate insulating layer between the first compensation gate electrode and the compensation active region is different from a layer structure of the gate insulating layer between the second compensation gate electrode and the compensation active region.

公开(公告)号：US20240266354A1

公开(公告)日：2024-08-08

申请号：US18424907

申请日：2024-01-29

Applicant: Samsung Display Co., Ltd.

Inventor： KEUNWOO KIM ,  DOO-NA KIM ,  SANGSUB KIM ,  BUMMO SUNG ,  SANGGUN CHOI

IPC: H01L27/12

CPC classification number: H01L27/1222 ,  H01L27/124 ,  H01L27/1255

Abstract: A display device includes: a substrate, a first active pattern disposed on the substrate and including a first channel region, a second channel region spaced apart from each other, and a first common conductive region positioned between the first channel region and the second channel region, a second active pattern disposed on the substrate, spaced apart from the first active pattern, and including a third channel region, a fourth channel region spaced apart from each other, and a second common conductive region positioned between the third channel region and the fourth channel region, a first gate layer disposed on the first and second active patterns and including a first electrode overlapping the first active pattern, and a second gate layer disposed on the first gate layer and including a second electrode overlapping the second active pattern.

公开(公告)号：US20240105113A1

公开(公告)日：2024-03-28

申请号：US18526869

申请日：2023-12-01

Applicant: Samsung Display Co., Ltd.

Inventor： KEUNWOO KIM

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/0256 ,  G09G2320/0257 ,  G09G2320/043

Abstract: A pixel circuit includes: a first transistor including a first gate terminal, a first source terminal electrically connected to a first node, a first drain terminal electrically connected to a light emitting diode, and a back-gate terminal, where a first voltage which decreases over time is applied to the back-gate terminal; and a second transistor including a second gate terminal which receives a gate signal, a second source terminal which receives a data voltage, and a second drain terminal electrically connected to the first node.

公开(公告)号：US20240013718A1

公开(公告)日：2024-01-11

申请号：US18311806

申请日：2023-05-03

Applicant: Samsung Display Co., LTD.

Inventor： KEUNWOO KIM

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2310/08 ,  G09G2300/0426 ,  G09G2300/0842 ,  G09G2310/061

Abstract: A pixel according to one or more embodiments of the present disclosure may include a transistor including a gate terminal connected to a first node, a first terminal connected to a first power, and a second terminal connected to a second node having a same potential as the first node, a capacitor including a first capacitor terminal connected to a data power, and a second capacitor terminal connected to the first node, and a light emitting diode including a first diode terminal connected to the second node, and a second diode terminal connected to a second power.

公开(公告)号：US20230337468A1

公开(公告)日：2023-10-19

申请号：US18076743

申请日：2022-12-07

Applicant: Samsung Display Co., Ltd.

Inventor： KEUNWOO KIM

IPC: H01L51/00

CPC classification number: H01L27/3262 ,  H01L27/3265 ,  H01L27/3276

Abstract: A display device includes a light emitting diode, a first transistor which transmits a driving current to the light emitting diode, at least one switching transistor connected to the first transistor and including a first sub-transistor and a second sub-transistor connected to each other through a common node, and a back-gate terminal connected to a first power supply and the common node, and overlapping the second sub-transistor.

公开(公告)号：US20180203537A1

公开(公告)日：2018-07-19

申请号：US15715590

申请日：2017-09-26

Applicant: Samsung Display Co., Ltd.

Inventor： KEUNWOO KIM ,  SOOYOUNG PARK ,  JOONGHYUN PARK

IPC: G06F3/042 ,  G06F3/041

CPC classification number: G06F3/042 ,  G06F3/0412 ,  H01L27/1443

Abstract: A photo sensor pixel includes a pixel circuit including a driving transistor, a switching transistor having a double gate structure and a photo sensing transistor connected in series with the switching transistor. The pixel circuit drives a light emitting element therein based on a data voltage provided thereto through a data line, the switching transistor includes a top gate electrode and a bottom gate electrode, which are connected to different gate lines, respectively, and the photo sensing transistor senses incident light.

公开(公告)号：US20250014516A1

公开(公告)日：2025-01-09

申请号：US18887017

申请日：2024-09-16

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： KEUNWOO KIM

IPC: G09G3/3233

Abstract: A pixel according to one or more embodiments of the present disclosure may include a transistor including a gate terminal connected to a first node, a first terminal connected to a first power, and a second terminal connected to a second node having a same potential as the first node, a capacitor including a first capacitor terminal connected to a data power, and a second capacitor terminal connected to the first node, and a light emitting diode including a first diode terminal connected to the second node, and a second diode terminal connected to a second power.