公开(公告)号：US20200342815A1

公开(公告)日：2020-10-29

申请号：US16811514

申请日：2020-03-06

Applicant: Samsung Display Co., LTD.

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

IPC: G09G3/3266 ,  G09G3/3291

Abstract: A display device including pixels is provided. Each of the pixels includes a first transistor having a gate electrode connected to a first node, a first electrode connected to a second node, and a second electrode connected to a third node, a second transistor having a gate electrode connected to a first scan line, a first electrode connected to a data line, and a second electrode connected to the second node, and a third transistor having a first gate electrode connected to the first scan line, a second gate electrode, a first electrode connected to the first node, and a second electrode connected to the third node. The second gate electrode may be in a floating state, and the third transistor may be aged to alleviate a leakage current in order to improve image generation.

公开(公告)号：US20240381719A1

公开(公告)日：2024-11-14

申请号：US18389638

申请日：2023-12-19

Applicant: Samsung Display Co., LTD.

Inventor： Keun Woo KIM

IPC: H10K59/131 ,  H10K59/121

Abstract: A light emitting display device includes a driving transistor including a first driving gate electrode, a second driving gate electrode, a first electrode, and a second electrode, a second transistor including a gate electrode, a first electrode connected to a data line, and a second electrode connected to the second driving gate electrode, a light emitting diode including an anode directly connected to the second electrode of the driving transistor, a storage capacitor including a first storage electrode connected to the anode of the light emitting diode and a second storage electrode connected to the second driving gate electrode, a driving voltage line directly connected to the first electrode of the driving transistor, and a light emitting control line directly connected to the first driving gate electrode.

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：US20230317008A1

公开(公告)日：2023-10-05

申请号：US18152719

申请日：2023-01-10

Applicant: Samsung Display Co., LTD.

Inventor： Keun Woo KIM

IPC: G09G3/3233 ,  G09G3/3266

CPC classification number: G09G3/3233 ,  G09G3/3266 ,  G09G2330/021 ,  G09G2320/0233 ,  G09G2320/0247 ,  G09G2300/0426

Abstract: A display device includes: a sub-pixel connected to a k-th scan line and a j-th data line crossing the k-th scan line, wherein the sub-pixel includes: a light emitting element; a driving transistor configured to provide a driving current to the light emitting element according to a data voltage applied to a gate electrode thereof and including a first lower line; a first sub-transistor and a second sub-transistor connected to the gate electrode of the driving transistor and connected to each other in series; and a first node connecting the first sub-transistor and the second sub-transistor to each other, and the first node is connected to the first lower line.

公开(公告)号：US20230267884A1

公开(公告)日：2023-08-24

申请号：US18082515

申请日：2022-12-15

Applicant: Samsung Display Co., LTD.

Inventor： Keun Woo KIM

IPC: G09G3/3233 ,  H10K59/123 ,  H10K59/12 ,  H01L27/12

CPC classification number: G09G3/3233 ,  H10K59/123 ,  H10K59/1201 ,  H01L27/127 ,  H01L27/1222 ,  G09G2300/0408 ,  G09G2310/0202 ,  G09G2300/0819 ,  G09G2310/08 ,  G09G2300/0426 ,  G09G2320/0247

Abstract: A display device includes a substrate, a first active layer including a driving active pattern of a driving transistor disposed on the substrate and a first active pattern of a first transistor disposed on the substrate, a second active layer including a driving sub-active pattern disposed on the driving active pattern of the first active layer, a first insulating film disposed on the first active layer and the second active layer, a driving gate electrode disposed on the first insulating film and overlapping the driving sub-active pattern, and a first gate electrode disposed on the first insulating film and overlapping the first active pattern, where a thickness of the driving active pattern is greater than a thickness of the driving sub-active pattern.

公开(公告)号：US20220271112A1

公开(公告)日：2022-08-25

申请号：US17483846

申请日：2021-09-24

Applicant: Samsung Display Co., Ltd.

Inventor： Keun Woo KIM

IPC: H01L27/32 ,  H01L29/786

Abstract: A display device is provided. The display device includes substrate, a lower conductive layer disposed on the substrate, and including a first lower conductive pattern and a second lower conductive pattern electrically isolated from each other, a first semiconductor layer including a first channel region, and a first source disposed on one side of the first channel region and a first drain region disposed on the other side of the first channel region. The first lower conductive pattern overlaps the first channel region and the first source region, and the second lower conductive pattern overlaps the first channel region and the first drain region in a plan view, and different voltages are applied to the first lower conductive pattern and the second lower conductive pattern.

公开(公告)号：US20210358967A1

公开(公告)日：2021-11-18

申请号：US17229647

申请日：2021-04-13

Applicant: Samsung Display Co., Ltd.

Inventor： Keun Woo KIM

IPC: H01L27/12 ,  G09F9/30 ,  H01L51/00

Abstract: A flexible display device includes: a flexible substrate; a semiconductor layer on the flexible substrate, the semiconductor layer including a polycrystalline semiconductor; a gate insulation layer on the semiconductor layer; and a gate electrode on the gate insulation layer, the gate electrode overlapping a channel region of the semiconductor layer in a plan view, wherein the semiconductor layer includes a source region and a drain region that are at opposite sides of the channel region, wherein the channel region includes a first region contacting the source region and a second region contacting the drain region, and wherein a channel width of the first region is greater than a channel width of the second region.

公开(公告)号：US20210074785A1

公开(公告)日：2021-03-11

申请号：US16871523

申请日：2020-05-11

Applicant: Samsung Display Co., Ltd.

Inventor： Doo Na KIM ,  Keun Woo KIM ,  Tae Wook KANG ,  Do Kyeong LEE ,  Yong Su LEE ,  Jae Hwan CHU ,  Kwang Hyun KIM ,  Yeoung Keol WOO ,  Yung Bin CHUNG

IPC: H01L27/32

Abstract: A display device includes: a first semiconductor layer on a first buffer layer, and including a first active layer; a first gate insulating layer on the first semiconductor layer, and covering the first active layer; a first conductive layer on the first gate insulating layer, and including a first gate electrode; a second conductive layer on the first conductive layer, and including a first source/drain electrode; a first interlayer insulating layer on the first conductive layer; a second semiconductor layer on the first interlayer insulating layer, and including a second active layer; a second gate insulating layer on the second semiconductor layer, and covering the second active layer; and a third conductive layer on the second gate insulating layer, and including a second gate electrode and a second source/drain electrode. The first gate insulating layer and the second gate insulating layer include different insulating materials from each other.

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：US20210036079A1

公开(公告)日：2021-02-04

申请号：US16838931

申请日：2020-04-02

Applicant: Samsung Display Co., Ltd.

Inventor： Keun Woo KIM ,  Yong Su LEE ,  Myoung Geun CHA ,  Doo Na KIM ,  Sang Sub KIM ,  Jae Hwan CHU ,  Sang Gun CHOI

IPC: H01L27/32

Abstract: A display device includes: a pixel at a display region. The pixel includes: a light-emitting element connected between a first power source and a second power source; and a first transistor connected between the first power source and the light-emitting element, the first transistor to control a driving current of the light-emitting element in response to a voltage of a first node. The first transistor includes a first driving transistor and a second driving transistor that are connected in series with each other between the first power source and the light-emitting element, and the first driving transistor and the second driving transistor have structures that are asymmetric with each other in a cross-sectional view.