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：US20240121984A1

公开(公告)日：2024-04-11

申请号：US18455832

申请日：2023-08-25

Applicant: Samsung Display Co., LTD.

Inventor： Han Bit KIM ,  Keun Woo KIM ,  Doo Na KIM ,  Sang Sub KIM ,  Chan Yeob SEOL ,  Jae Hwan CHU ,  Sang Gun CHOI

IPC: H10K59/121 ,  H10K59/131

CPC classification number: H10K59/1213 ,  H10K59/131

Abstract: A display device including a pixel electrode, and a pixel circuit electrically connected to the pixel electrode. The pixel circuit includes a first transistor including sub-transistors electrically connected to each other through a first common node, a second transistor including sub-transistors electrically connected to each other through a second common node, a first electrode electrically connecting the first common node with the second common node, and a second electrode disposed to overlap the first electrode and electrically connected to a direct current power source.

公开(公告)号：US20230317701A1

公开(公告)日：2023-10-05

申请号：US18130612

申请日：2023-04-04

Applicant: Samsung Display Co., Ltd.

Inventor： Keun Woo KIM

IPC: H01L25/16 ,  H01L25/075 ,  H01L33/62 ,  H01L27/12

CPC classification number: H01L25/167 ,  H01L25/0753 ,  H01L33/62 ,  H01L27/124

Abstract: A light emitting display device includes: a first pixel which displays a first color, and includes a first light emitting diode and a first pixel circuit portion connected to the first light emitting diode; and a second pixel which displays a second color, and includes a second light emitting diode and a second pixel circuit portion connected to the second light emitting diode. The first pixel circuit portion includes an initialization transistor which transmits an initialization voltage to the first light emitting diode, and the initialization transistor of the first pixel circuit portion includes a first gate electrode and a second gate electrode which receive a gate-on voltage. The second pixel circuit portion includes an initialization transistor which transmits the initialization voltage to the second light emitting diode, and the initialization transistor of the second pixel circuit portion includes a first gate electrode which receives the gate-on voltage.

公开(公告)号：US20230206841A1

公开(公告)日：2023-06-29

申请号：US17974589

申请日：2022-10-27

Applicant: Samsung Display Co., Ltd.

Inventor： Keun Woo KIM

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

CPC classification number: G09G3/3233 ,  H01L27/3276 ,  H01L51/56 ,  H01L2227/323 ,  G09G2300/0842 ,  G09G2300/0819 ,  G09G2310/08 ,  G09G2320/0247

Abstract: An embodiment provides a display device including: a substrate; a plurality of transistors disposed on the substrate, each of the plurality of transistors including a semiconductor layer disposed on the substrate, and a gate electrode disposed on the semiconductor layer; and a light emitting element positioned on the data conductor layer, wherein the plurality of transistors include a driving transistor that transmits a driving voltage to the light emitting element and a compensation transistor that is turned on in response to a scan signal, the semiconductor layer includes a first portion having a first thickness and a second portion having a second thickness thinner than the first thickness, and the driving transistor is disposed in the first portion of the semiconductor layer.

公开(公告)号：US20230063106A1

公开(公告)日：2023-03-02

申请号：US17721525

申请日：2022-04-15

Applicant: Samsung Display Co., Ltd.

Inventor： Keun Woo KIM ,  Tae Wook KANG ,  Jae Seob LEE

IPC: H01L27/32

Abstract: The present disclosure relates to a display device which includes: a substrate; a semiconductor layer disposed on the substrate and including a driving transistor and a second transistor each of which including a channel, a first region, and a second region; a first gate insulating layer disposed on the semiconductor layer, a gate electrode of the second transistor disposed on the first gate insulating layer and overlapping the channel of the second transistor; a second gate insulating layer disposed on the gate electrode of the gate electrode of the second transistor; and a gate electrode of the first driving transistor disposed on the second gate insulating layer and overlapping the channel of the driving transistor.

公开(公告)号：US20220165830A1

公开(公告)日：2022-05-26

申请号：US17377278

申请日：2021-07-15

Applicant: Samsung Display Co., Ltd.

Inventor： Keun Woo KIM

IPC: H01L27/32 ,  H01L51/00

Abstract: An embodiment of a display device includes a display panel having a flexible characteristic and a rear passivation layer disposed on a rear surface of the display panel and including an opening, wherein a pixel is formed in an area of the display panel corresponding to the opening. The display panel includes: a flexible substrate including a polyimide layer and a barrier layer disposed on the polyimide layer; a driving transistor and a fifth transistor disposed on the substrate and including a polycrystalline semiconductor layer; a light emitting diode receiving an output current of the driving transistor; and a bottom metal layer disposed between the polyimide layer and the polycrystalline semiconductor layer in a cross-sectional view and disposed around a channel of the driving transistor in a plan view.

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：US20210057458A1

公开(公告)日：2021-02-25

申请号：US16849882

申请日：2020-04-15

Applicant: Samsung Display Co., Ltd.

Inventor： Keun Woo KIM ,  Mee Jae KANG ,  Doo Na KIM ,  Yun Jung OH ,  Yong Su LEE ,  Jae Hwan CHU

IPC: H01L27/12 ,  G09G3/20

Abstract: A display device includes: a plurality of pixels connected to gate lines and data lines; a gate driver to supply a gate signal to the gate lines; and a data driver to supply a data signal to the data lines. The gate driver includes: a first transistor including a first active layer at a first layer; and a second transistor including a second active layer at a second layer on the first layer.

公开(公告)号：US20250107329A1

公开(公告)日：2025-03-27

申请号：US18663815

申请日：2024-05-14

Applicant: Samsung Display Co., LTD.

Inventor： Keun Woo KIM

IPC: H10K59/121 ,  G09G3/3233 ,  H10K59/131

Abstract: A display device includes a light-emitting element disposed on a substrate, a first transistor configured to control a driving current flowing in the light-emitting element, a second transistor configured to apply a data voltage to a source electrode of the first transistor, a third-first transistor connected to a gate electrode of the first transistor, and a third-second transistor connected between a source electrode of the third-first transistor and a drain electrode of the first transistor. One side of a semiconductor region of the third-second transistor adjacent to a source electrode of the third-second transistor has a first width, and another side of the semiconductor region of the third-second transistor adjacent to a drain electrode of the third-second transistor has a second width smaller than the first width.

公开(公告)号：US20240355828A1

公开(公告)日：2024-10-24

申请号：US18601840

申请日：2024-03-11

Applicant: Samsung Display Co., Ltd.

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

IPC: H01L27/12 ,  H10K59/121 ,  H10K59/131

CPC classification number: H01L27/1225 ,  H10K59/1213 ,  H10K59/131

Abstract: The disclosure relates to a display device, and more particularly, to a display device capable of reducing a dead space area while improving current driving capability of pull-up and pull-down transistors. According to an embodiment of the disclosure, a substrate having a display area and a non-display area; pixels arranged in the display area of the substrate; and a gate driving circuit disposed in the non-display area of the substrate and connected to a transistor of the pixel. The gate driving circuit includes a pull-up transistor and a pull-down transistor. At least one of the pull-up and pull-down transistors includes a plurality of sub-transistors including a plurality of gate electrodes, and wherein the sub-transistors shares at least one of the gate electrodes.