公开(公告)号：US20210150960A1

公开(公告)日：2021-05-20

申请号：US17038256

申请日：2020-09-30

Applicant: Samsung Display Co., Ltd.

Inventor： Keun Woo KIM ,  Tae Wook KANG ,  Hye Na KWAK ,  Doo Na KIM ,  Han Bit KIM ,  Bum Mo SUNG ,  Do Kyeong LEE ,  Yong Su LEE ,  Jae Hwan CHU

IPC: G09G3/20

Abstract: A display device includes: a pixel unit including a plurality of pixels; a scan driver having a plurality of stages and configured to supply a scan signal to the pixel unit; and a light emission control driver having a plurality of stages and configured to supply a light emission control signal to the pixel unit, wherein a first transistor of a plurality of transistors included in at least one of the stages of the scan driver or the stages of the light emission control driver comprises: an active layer pattern on a base layer, and including a channel region forming a channel, and first and second regions on opposite sides of the channel region; and a gate electrode spaced apart from the active layer pattern with a first insulating film therebetween, and overlapping the channel region.

公开(公告)号：US20210036080A1

公开(公告)日：2021-02-04

申请号：US16856780

申请日：2020-04-23

Applicant: Samsung Display Co., LTD.

Inventor： Keun Woo KIM ,  Hye Na KWAK ,  Doo Na KIM ,  Sang Sub KIM ,  Thanh Tien NGUYEN ,  Yong Su LEE ,  Jae Hwan CHU

IPC: H01L27/32 ,  G09G3/3233

Abstract: A display device includes a pixel disposed in a display region. The pixel includes a light-emitting element connected between a first power source and a second power source; a first transistor connected between the first power source and the light-emitting element to control a driving current flowing in the light-emitting element in response to a voltage of a first node; and at least one switching transistor to transmit a data signal or a voltage of an initialization power source to the first node. The switching transistor includes a first channel region, a first conductive region and a second conductive region which are respectively disposed at opposite sides of the first channel region, and a first wide band-gap region disposed between the first channel region and the second conductive region.

公开(公告)号：US20240169918A1

公开(公告)日：2024-05-23

申请号：US18448817

申请日：2023-08-11

Applicant: Samsung Display Co., LTD.

Inventor： Keun Woo KIM ,  Hye Na KWAK ,  Chan Yeob SEOL ,  Bum Mo SUNG ,  Ji Yeong SHIN

IPC: G09G3/3233 ,  G09G3/3291

CPC classification number: G09G3/3233 ,  G09G3/3291

Abstract: A display device includes: a light emitting element on a substrate; a third-first transistor and a third-second transistor connected in series between a gate electrode of the first transistor and a drain electrode of the first transistor; a first metal layer on the substrate and comprising a gate electrode of the third-first transistor and a gate electrode of the third-second transistor; a hydrogen passivation layer on the first metal layer; a semiconductor region of each of a first transistor, the third-first transistor, and the third-second transistor on the hydrogen passivation layer; a gate electrode on the capping layer; a first bias electrode on a same layer as the gate electrode of the first transistor and overlapping the semiconductor region of the third-first transistor; and a second bias electrode on a same layer as the first bias electrode and overlapping the semiconductor region of the third-second transistor.

公开(公告)号：US20210049958A1

公开(公告)日：2021-02-18

申请号：US16852848

申请日：2020-04-20

Applicant: Samsung Display Co., Ltd.

Inventor： Keun Woo KIM ,  Mee Jae KANG ,  Hye Na KWAK ,  Han Bit KIM ,  Thanh Tien NGUYEN ,  Yong Su LEE ,  Jae Seob LEE

IPC: G09G3/325 ,  G09G3/3283 ,  G09G3/3266

Abstract: A display device includes: a pixel including: a light emitting element connected between a first power source and a second power source; a first transistor connected between the first power source and the light emitting element to control a driving current, and including a first gate electrode connected to a first node and a second gate electrode connected to a bias control line; and a switching transistor connected between a data line and the first node, and including a gate electrode connected to a scan line; and a driving circuit to drive the pixel according to a driving frequency. The driving circuit drives the pixel in a first mode when the driving frequency is in a first range, and sequentially supplies a control signal having a first voltage and a second voltage to the bias control line during a light emission period of the pixel in the first mode.

公开(公告)号：US20250095582A1

公开(公告)日：2025-03-20

申请号：US18966105

申请日：2024-12-02

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Keun Woo KIM ,  Hye Na KWAK ,  Chan Yeob SEOL ,  Bum Mo SUNG ,  Ji Yeong SHIN

IPC: G09G3/3233 ,  G09G3/3291

Abstract: A display device includes: a light emitting element on a substrate; a third-first transistor and a third-second transistor connected in series between a gate electrode of the first transistor and a drain electrode of the first transistor; a first metal layer on the substrate and comprising a gate electrode of the third-first transistor and a gate electrode of the third-second transistor; a hydrogen passivation layer on the first metal layer; a semiconductor region of each of a first transistor, the third-first transistor, and the third-second transistor on the hydrogen passivation layer; a gate electrode on the capping layer; a first bias electrode on a same layer as the gate electrode of the first transistor and overlapping the semiconductor region of the third-first transistor; and a second bias electrode on a same layer as the first bias electrode and overlapping the semiconductor region of the third-second transistor.

公开(公告)号：US20210210014A1

公开(公告)日：2021-07-08

申请号：US17092832

申请日：2020-11-09

Applicant: Samsung Display Co., LTD.

Inventor： Keun Woo KIM ,  Hye Na KWAK ,  Doo Na KIM ,  Han Bit KIM ,  Yong Su LEE

IPC: G09G3/3233 ,  G09G3/20

Abstract: A display device includes a driving circuit that drives a pixel, and a display region including the pixel. The pixel includes a light emitting element electrically connected between a first power source and a second power source, a first transistor electrically connected between the first power source and the light emitting element to control a driving current, the first transistor including a first gate electrode electrically connected to a first node, and a second gate electrode electrically connected to a bias control line, and a switching transistor electrically connected between a data line and the first node, the switching transistor including a gate electrode electrically connected to a scan line. The driving circuit varies a control signal provided to the bias control line in a second period based on a first data signal provided to the data line during a first period.

公开(公告)号：US20240332321A1

公开(公告)日：2024-10-03

申请号：US18607426

申请日：2024-03-16

Applicant: Samsung Display Co., LTD.

Inventor： Keun Woo KIM ,  Hye Na KWAK ,  Doo Na KIM ,  Sang Sub KIM ,  Bum Mo SUNG

IPC: H01L27/12 ,  G09G3/3233 ,  H10K59/121

CPC classification number: H01L27/127 ,  G09G3/3233 ,  H10K59/1213 ,  G09G2300/0819 ,  G09G2300/0852

Abstract: A display device includes a light emitting element disposed on a substrate, a first transistor which controls a driving current flowing in the light emitting element, a second transistor which supplies a data voltage to a gate electrode of the first transistor, a first-third transistor and a second-third transistor connected in series between the gate and drain electrodes of the first transistor, a first charge injection layer adjacent to a drain electrode of the first-third transistor electrically connected to the gate electrode of the first transistor on a semiconductor region of the first-third transistor, and a second charge injection layer adjacent to a source electrode of the second-third transistor integrally formed with the drain electrode of the first transistor on a semiconductor region of the second-third transistor. A charge injection area of the first charge injection layer is greater than a charge injection area of the second charge injection layer.

公开(公告)号：US20230022035A1

公开(公告)日：2023-01-26

申请号：US17683848

申请日：2022-03-01

Applicant: Samsung Display Co., LTD.

Inventor： Myoung Geun CHA ,  Sang Gun CHOI ,  Hye Na KWAK ,  Yun Jung OH ,  Ki Seok CHOI

IPC: H01L27/32 ,  G06F3/044

Abstract: A display device including: a substrate including a main area and a sub-area at a side of the main area; a thin-film transistor on the substrate and positioned in the main area; a first insulating layer on a gate electrode of the thin-film transistor; a light-emitting element on the first insulating layer, positioned in the main area, and electrically connected to the thin-film transistor; a plurality of pads on the first insulating layer and positioned in the sub-area; and a light-blocking layer overlapping the plurality of pads and located between the substrate and the first insulating layer.

公开(公告)号：US20210057502A1

公开(公告)日：2021-02-25

申请号：US16857888

申请日：2020-04-24

Applicant: Samsung Display Co., LTD.

Inventor： Keun Woo KIM ,  Sang Sub KIM ,  Hye Na KWAK ,  Doo Na KIM ,  Thanh Tien NGUYEN ,  Yong Su LEE ,  Jae Hwan CHU

IPC: H01L27/32 ,  G09G3/3233 ,  G09G3/3291 ,  G09G3/3266

Abstract: A display device includes pixels at least one of which includes a light emitting element connected between a first power source and a second power source, a first transistor connected between the first power source and the light emitting element and controlling a driving current flowing through the light emitting element in response to a voltage of a first node, a switching transistor connected to the first node and including and active layer that includes first and second conductive regions spaced apart from each other, first and second channel regions disposed between the first and second conductive regions, and a common conductive region disposed between the first and second channel regions, and a conductive pattern overlapping the active layer to face the common conductive region.