公开(公告)号：US20210391401A1

公开(公告)日：2021-12-16

申请号：US17244013

申请日：2021-04-29

Applicant: Samsung Display Co., Ltd.

Inventor： KEUNWOO KIM ,  DOO-NA KIM ,  MEEJAE KANG ,  THANH TIEN NGUYEN

IPC: H01L27/32 ,  G09G3/3266 ,  G09G3/3258

Abstract: A display device includes a pixel including a pixel driving transistor and a pixel switching transistor, the pixel driving transistor including a first active layer including a first channel area having a first length, a first gate insulating layer on the first active layer, a first gate electrode on the first gate insulating layer, a first source electrode and a first drain electrode above the first gate electrode, the pixel switching transistor including a second active layer including a second channel area having a second length that is shorter than the first length, a second gate insulating layer on the second active layer, a second gate electrode on the second gate insulating layer, a second source and a second drain electrode above the second gate electrode, and wherein the pixel driving transistor and the pixel switching transistor each include a P-MOS transistor.

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：US20220415255A1

公开(公告)日：2022-12-29

申请号：US17684227

申请日：2022-03-01

Applicant: Samsung Display Co., Ltd.

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

IPC: G09G3/3233

Abstract: A pixel includes a first capacitor connected between a first electrode and a second electrode connected to a first node, a first transistor including a gate electrode connected to the first node, a first electrode connected to a second node, and a second electrode connected to a third node, a second transistor including a gate electrode that receives a data write gate signal, a first electrode that receives a data voltage, and a second electrode connected to the second node, a third transistor connected between the first node and the third node, a fourth transistor connected between the first node and an initialization voltage input terminal to which an initialization voltage is applied, an eighth transistor t connected to the third transistor and the fourth transistor, and an organic light emitting diode including an anode and a cathode receiving a second power supply voltage.

公开(公告)号：US20220246087A1

公开(公告)日：2022-08-04

申请号：US17536560

申请日：2021-11-29

Applicant: Samsung Display Co., Ltd.

Inventor： KEUNWOO KIM ,  MEEJAE KANG ,  HANBIT KIM ,  DO KYEONG LEE ,  JAEHWAN CHU

IPC: G09G3/32 ,  H01L27/32

Abstract: A pixel includes a light emitting element, a driving switching element and a first compensation switching element and a second compensation switching element. The driving switching element is which applies a driving current to the light emitting element. The first compensation switching element and the second compensation switching element are connected between a control electrode of the driving switching element and an output electrode of the driving switching element. The first compensation switching element and the second compensation switching element are connected to each other in series. The driving switching element is a P-type transistor. The first compensation switching element is an N-type transistor. The second compensation switching element is a P-type transistor.