公开(公告)号：US20250056919A1

公开(公告)日：2025-02-13

申请号：US18733703

申请日：2024-06-04

Applicant: Samsung Display Co., LTD.

Inventor： KWIHYUN KIM ,  DONGWOO KIM ,  YEONKYUNG KIM ,  WONJUN LEE

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

Abstract: A display device includes: a substrate including a first pixel area and a second pixel area adjacent to each other along a first direction; a first pixel in the first pixel area on the substrate and including a first pixel electrode; a second pixel in the second pixel area on the substrate and including a second pixel electrode; and a repair pattern on the first pixel electrode and the second pixel electrode, contacting with the first pixel electrode and the second pixel electrode, and electrically connecting the first pixel and the second pixel.

公开(公告)号：US20250078734A1

公开(公告)日：2025-03-06

申请号：US18744099

申请日：2024-06-14

Applicant: Samsung Display Co., LTD.

Inventor： KWIHYUN KIM ,  YEONKYUNG KIM ,  SEHYUN LEE ,  HAKSUN CHANG

IPC: G09G3/32

Abstract: A pixel circuit includes a first transistor including a control electrode electrically connected to a first node, a first electrode electrically connected to a second node and a second electrode electrically connected to a third node, a second transistor configured to apply a first data voltage to the first transistor, a third transistor electrically connected to the first node and the third node, a fourth transistor including a control electrode electrically connected to a fourth node, a first electrode electrically connected to a fifth node and a second electrode electrically connected to a sixth node, a fifth transistor configured to apply a second data voltage to the fourth transistor, a sixth transistor electrically connected to the fourth node and the sixth node and a light emitting element that emits light based on the first data voltage and the second data voltage.

公开(公告)号：US20240346972A1

公开(公告)日：2024-10-17

申请号：US18439773

申请日：2024-02-13

Applicant: Samsung Display Co., Ltd.

Inventor： DONGWOO KIM ,  KWIHYUN KIM ,  YEONKYUNG KIM

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2300/0452 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/08

Abstract: A display panel is disclosed that includes a first pixel, a second pixel and an initialization transistor. The first pixel includes a first light emitting element configured to emit light based on a data writing gate signal, an initialization gate signal, a compensation gate signal, an emission signal and a first data voltage. The second pixel includes a second light emitting element configured to emit light based on the data writing gate signal, the initialization gate signal, the compensation gate signal, the emission signal and a second data voltage. The initialization transistor is commonly connected to the first pixel and the second pixel. The initialization transistor is configured to output an initialization voltage to the first pixel and the second pixel in response to the initialization gate signal.

公开(公告)号：US20240290250A1

公开(公告)日：2024-08-29

申请号：US18401714

申请日：2024-01-02

Applicant: Samsung Display Co., Ltd.

Inventor： SEHYUN LEE ,  KWIHYUN KIM ,  YEONKYUNG KIM ,  JINJOO HA

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/0216 ,  G09G2310/0267 ,  G09G2310/0275 ,  G09G2310/0278 ,  G09G2310/08 ,  G09G2320/0233

Abstract: A pixel circuit includes a light emitting element, a first transistor that provides a driving current to the light emitting element, a first capacitor including a first electrode connected to a control electrode of the first transistor and a second electrode connected to a first electrode of the first transistor, a second capacitor including a first electrode directly connected to the control electrode of the first transistor and a second electrode, and a second transistor that provides a data voltage to the control electrode of the first transistor in response to a write gate signal.

公开(公告)号：US20240212584A1

公开(公告)日：2024-06-27

申请号：US18503186

申请日：2023-11-07

Applicant: Samsung Display Co., Ltd.

Inventor： YEONKYUNG KIM ,  KWIHYUN KIM ,  DONGWOO KIM

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0426 ,  G09G2300/0852 ,  G09G2300/0861

Abstract: A pixel circuit includes a light emitting element, a first transistor that applies a driving current to the light emitting element, a second transistor that writes a data voltage in response to a write gate signal, a first capacitor connected to a control electrode of the first transistor, a second capacitor including a first electrode connected to the second transistor and a second electrode connected to the control electrode of the first transistor, a third transistor that diode-connects the first transistor in response to a compensation gate signal, a fourth transistor that applies an initialization voltage to the control electrode of the first transistor in response to a first initialization gate signal, and a fifth transistor that transmits the driving current to the light emitting element in response to an emission signal.

公开(公告)号：US20250104614A1

公开(公告)日：2025-03-27

申请号：US18887386

申请日：2024-09-17

Applicant: Samsung Display Co., LTD.

Inventor： KWIHYUN KIM ,  SANG YONG NO

IPC: G09G3/32 ,  G09G3/3233

Abstract: A pixel includes a light emitting element including a first electrode, and a second electrode connected to a third power line which transmits a third power voltage, a pulse width modulator which controls an emission time duration of the light emitting element in a frame period based on a data voltage, and a constant current generator which provides a driving current having a constant level to the light emitting element based on a constant current generation voltage applied thereto, where the constant current generator includes a second driving transistor including a gate electrode connected to a third node, a first electrode connected to a second power line which transmits a second power voltage, and a second electrode connected to the first electrode of the light emitting element.

公开(公告)号：US20240331602A1

公开(公告)日：2024-10-03

申请号：US18616442

申请日：2024-03-26

Applicant: Samsung Display Co., LTD.

Inventor： YEONKYUNG KIM ,  KWIHYUN KIM ,  DONGWOO KIM

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/0275 ,  G09G2310/0297 ,  G09G2310/08

Abstract: A pixel circuit includes a first transistor connected to a gate node, receiving a first power voltage, and connected to a second node, a second transistor receiving a data writing gate signal, receiving a data voltage, and connected to a first node, a third transistor receiving a compensation gate signal, connected to the gate node, and connected to the second node, a fourth transistor receiving an initialization gate signal, receiving an initialization voltage, and connected to the gate node, a fifth transistor receiving the initialization gate signal, connected to the first node, and connected to an anode node, a sixth transistor receiving an emission signal, connected to the second node, and connected to the anode node, and a light emitting element connected to the anode node and receiving a second power voltage.

公开(公告)号：US20240242671A1

公开(公告)日：2024-07-18

申请号：US18501031

申请日：2023-11-03

Applicant: Samsung Display Co., Ltd.

Inventor： YEONKYUNG KIM ,  KWIHYUN KIM ,  DONGWOO KIM

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/08 ,  G09G2320/045 ,  G09G2330/021

Abstract: A pixel circuit is disclosed that includes first through sixth transistors, first and second capacitors, and a light emitting element. A gate electrode of the second transistor receives a first gate signal. A gate electrode of the third transistor receive a second gate signal. Gate electrodes of each of the fourth and fifth transistors receive a third gate signal. A gate electrode of the sixth transistor receives an emission signal. First electrodes of the first transistor and the first capacitor each receive a first power supply voltage. A cathode electrode of the light emitting element receives a second power supply voltage. A first electrode of the fourth transistor receives an initialization voltage.

公开(公告)号：US20250095574A1

公开(公告)日：2025-03-20

申请号：US18822222

申请日：2024-09-01

Applicant: Samsung Display Co., LTD.

Inventor： YEONKYUNG KIM ,  DONGWOO KIM ,  KWIHYUN KIM

IPC: G09G3/3233

Abstract: A display device includes a plurality of pixels. Each of the plurality of pixels includes a light emitting element, a PWM circuit that controls an emission time of the light emitting element based on a PWM data voltage, a sweep voltage, and a reference voltage, a CCG circuit that provides a constant driving current to the light emitting element based on a constant current data voltage and a power supply voltage, and a connection switch that connects the PWM circuit to the CCG circuit. The light emitting elements substantially simultaneously start emitting light at a start time point of an emission period. In each pixel, the PWM circuit transfers the reference voltage to the CCG circuit through the connection switch at a time point corresponding to a voltage level of the PWM data voltage, and the CCG circuit causes the light emitting element to stop emitting light.

公开(公告)号：US20250061853A1

公开(公告)日：2025-02-20

申请号：US18676614

申请日：2024-05-29

Applicant: Samsung Display Co., LTD.

Inventor： JINJOO HA ,  SEHYUN LEE ,  KWIHYUN KIM

IPC: G09G3/3233

Abstract: A pixel circuit comprises a light-emitting element, a first transistor which provides a driving current to the light-emitting element, a first capacitor including a first terminal connected to a first terminal of the first transistor and a second terminal connected to a gate terminal of the first transistor, a second capacitor including a first terminal connected to the gate terminal of the first transistor and a second terminal connected to a second terminal of the first transistor, a second transistor which provides a data voltage to the gate terminal of the first transistor in response to a write gate signal, and a third transistor which connects the second terminal of the first transistor and an anode terminal of the light-emitting element in response to a first emission signal.