公开(公告)号：US20230395030A1

公开(公告)日：2023-12-07

申请号：US18305156

申请日：2023-04-21

Applicant: Samsung Display Co., LTD.

Inventor： KEUNWOO KIM ,  TAEWOOK KANG

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0842 ,  G09G2300/0819 ,  G09G2310/08 ,  G09G2310/0262 ,  G09G2300/0426 ,  G09G2320/0233 ,  G09G2320/0247

Abstract: A display apparatus includes: a light emitting element; a driving switching element to apply a driving current to the light emitting element; and a first compensation switching element and a second compensation switching element connected in series to each other between a control electrode of the driving switching element and an output electrode of the driving switching element. A control electrode of the first compensation switching element and a control electrode of the second compensation switching element are to receive a compensation gate signal, and a falling waveform of the compensation gate signal and a rising waveform of the compensation gate signal are asymmetrical to each other.

公开(公告)号：US20220344424A1

公开(公告)日：2022-10-27

申请号：US17568242

申请日：2022-01-04

Applicant: Samsung Display Co., Ltd.

Inventor： KEUNWOO KIM ,  TAEWOOK KANG

IPC: H01L27/32 ,  H01L51/56

Abstract: A display device includes a substrate including a sub-pixel area, an active layer disposed in the sub-pixel area and including first to third regions, a first channel region between the first and second regions, and a second channel region between the second and third regions, a first gate electrode disposed in the first and second channel regions, and constituting a dual gate transistor together with the first and second regions, the first channel region, the second and third regions, and the second channel region, a first gate insulating layer disposed between the active layer and the first gate electrode, and defining an opening exposing the second region, an insulating pattern in the opening, a gate electrode pattern contacting a top surface of the insulating pattern, and is spaced apart from the first gate electrode, and a light emitting structure on the dual gate transistor and the gate electrode pattern.

公开(公告)号：US20220310733A1

公开(公告)日：2022-09-29

申请号：US17536481

申请日：2021-11-29

Applicant: Samsung Display Co., Ltd.

Inventor： KEUNWOO KIM

IPC: H01L27/32

Abstract: A display device includes a plurality of pixels each including: a first driving transistor including a first electrode connected to a first node; a second electrode connected to a second node, and a gate electrode connected to a third node, a second driving transistor including a first electrode connected to a fourth node, a second electrode connected to the first node, a gate electrode connected to the third node, and a lower gate electrode which receives an emission control signal; a second transistor including a first electrode which receives a data voltage, a second electrode connected to the first node, and a gate electrode which receives a write gate signal; and a third transistor including a first electrode connected to the second node, a second electrode connected to the third node, and a gate electrode which receives the write gate signal or a compensation gate signal.

公开(公告)号：US20220181420A1

公开(公告)日：2022-06-09

申请号：US17471849

申请日：2021-09-10

Applicant: Samsung Display Co., Ltd.

Inventor： KEUNWOO KIM ,  MEEJAE KANG ,  THANH TIEN NGUYEN ,  HYENA KWAK ,  JAEHWAN CHU

IPC: H01L27/32

Abstract: A display device may include a substrate, a first transistor disposed on the substrate and including a first gate electrode, a first conductive pattern disposed on the first gate electrode such that the first conductive pattern and the first gate electrode constitute a first capacitor, a second conductive pattern disposed on the first capacitor, a third conductive pattern disposed on the second conductive pattern such that the third conductive pattern and the second conductive pattern constitute a second capacitor, and a light emitting structure disposed on the second capacitor.

公开(公告)号：US20220180811A1

公开(公告)日：2022-06-09

申请号：US17489399

申请日：2021-09-29

Applicant: Samsung Display Co., Ltd.

Inventor： HANBIT KIM ,  MEEJAE KANG ,  KEUNWOO KIM ,  DOO-NA KIM ,  SANGSUB KIM ,  DO KYEONG LEE ,  JAEHWAN CHU

IPC: G09G3/3258 ,  G09G3/3266

Abstract: A pixel includes: a capacitor connected between a first voltage line and a first node; a light emitting diode including a first electrode connected to a second node, and a second electrode connected to a second voltage line; a first transistor; a second transistor; a third transistor including a first electrode connected to the first node, a second electrode connected to the second node, and a gate electrode to receive a first scan signal; a fourth transistor including a first electrode connected to the first node, a second electrode connected to a third voltage line to receive a third voltage, and a gate electrode to receive a second scan signal; and a compensation transistor including a first electrode connected to the first node, a second electrode connected to a fourth voltage line to receive a compensation voltage, and a gate electrode to receive a compensation control voltage.

公开(公告)号：US20210335242A1

公开(公告)日：2021-10-28

申请号：US17084142

申请日：2020-10-29

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： KEUNWOO KIM ,  DOONA KIM ,  SANGSUB KIM ,  DOKYEONG LEE ,  JAEHWAN CHU

IPC: G09G3/3233

Abstract: A display apparatus includes a first thin-film transistor including a semiconductor layer arranged on a substrate, a driving gate electrode arranged on the semiconductor layer, and a first electrode arranged between the substrate and the semiconductor layer, a second thin-film transistor transmitting a data signal received through a data line to the first thin-film transistor according to a first scan signal received through a first scan line, and a third thin-film transistor transmitting a first voltage to the first electrode according to a second scan signal received through a second scan line.

公开(公告)号：US20240363070A1

公开(公告)日：2024-10-31

申请号：US18766546

申请日：2024-07-08

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： KEUNWOO KIM ,  TAEWOOK KANG

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0262 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0247

Abstract: A display apparatus includes: a light emitting element; a driving switching element to apply a driving current to the light emitting element; and a first compensation switching element and a second compensation switching element connected in series to each other between a control electrode of the driving switching element and an output electrode of the driving switching element. A control electrode of the first compensation switching element and a control electrode of the second compensation switching element are to receive a compensation gate signal, and a falling waveform of the compensation gate signal and a rising waveform of the compensation gate signal are asymmetrical to each other.

公开(公告)号：US20240304134A1

公开(公告)日：2024-09-12

申请号：US18505137

申请日：2023-11-09

Applicant: Samsung Display Co., Ltd.

Inventor： KEUNWOO KIM

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/08 ,  G09G2320/02 ,  G09G2320/045

Abstract: A pixel is disclosed that includes a first transistor, a second transistor, a third transistor, a light emitting diode, a first capacitor, and a second capacitor. The first transistor includes a first gate electrode connected to a first node, a second gate electrode which receives a write gate signal or an emission control signal, a first electrode which receives a first power voltage, and a second electrode connected to a second node.

公开(公告)号：US20230395615A1

公开(公告)日：2023-12-07

申请号：US18310393

申请日：2023-05-01

Applicant: Samsung Display Co., LTD.

Inventor： KEUNWOO KIM

IPC: H01L27/12 ,  G09G3/3233

CPC classification number: H01L27/1255 ,  G09G3/3233 ,  H01L27/1222 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2310/08 ,  G09G2300/0426 ,  G09G2320/0247 ,  H01L27/1251

Abstract: A display device includes: a light emitting element; a driving transistor configured to transmit a driving current to the light emitting element; a first dual transistor comprising a first sub transistor connected to a gate electrode of the driving transistor, and a second sub transistor configured to connect an input electrode of the first sub transistor and an output electrode of the driving transistor; an active layer comprising a first common area defining the input electrode of the first sub transistor and an output electrode of the second sub transistor; a first compensation electrode overlapping at least a portion of the first common area to define the first compensation capacitor; and a first compensation voltage line configured to provide a first compensation voltage to the first compensation electrode.

公开(公告)号：US20230386409A1

公开(公告)日：2023-11-30

申请号：US18234089

申请日：2023-08-15

Applicant: Samsung Display Co., Ltd.

Inventor： KEUNWOO KIM

IPC: G09G3/3233

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

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.