公开(公告)号：US12302717B2

公开(公告)日：2025-05-13

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: H10K59/131 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3291

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.

公开(公告)号：US12256571B2

公开(公告)日：2025-03-18

申请号：US18405283

申请日：2024-01-05

Applicant: Samsung Display Co., LTD.

Inventor： Han Bit Kim ,  Mee Jae Kang ,  Keun Woo Kim ,  Doo-Na Kim ,  Sang Sub Kim ,  Do Kyeong Lee ,  Jae Hwan Chu

IPC: H01L27/12 ,  H01L27/15 ,  H10D86/40 ,  H10D86/60 ,  H10H29/14 ,  H10K59/121

Abstract: A display device includes a substrate, a semiconductor layer disposed on the substrate, and including a first channel portion, a second channel portion, a connecting portion disposed between the first channel portion and the second channel portion, and electrode regions, a first insulating layer disposed on the semiconductor layer, a gate conductor disposed on the first insulating layer and including a first gate electrode overlapping the first channel portion and a second gate electrode overlapping the second channel portion, signal lines disposed on the substrate, a first electrode electrically connected to at least one of electrode regions of the semiconductor layer, an emission layer disposed on the first electrode, and a second electrode disposed on the emission layer, and the first channel portion and the second channel portion of the semiconductor layer each have a first width greater than a second width of the connecting portion.

公开(公告)号：US11793039B2

公开(公告)日：2023-10-17

申请号：US17377278

申请日：2021-07-15

Applicant: Samsung Display Co., Ltd.

Inventor： Keun Woo Kim

IPC: H01L27/32 ,  H10K59/126 ,  H10K59/65 ,  H10K59/121 ,  H10K77/10 ,  H01L29/786 ,  H01L27/12 ,  H10K102/00

CPC classification number: H10K59/126 ,  H10K59/1213 ,  H10K59/65 ,  H10K77/111 ,  H01L27/1222 ,  H01L29/78633 ,  H01L29/78675 ,  H10K2102/311

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：US11615744B2

公开(公告)日：2023-03-28

申请号：US17141808

申请日：2021-01-05

Applicant: Samsung Display Co., Ltd.

Inventor： Keun Woo Kim ,  Tae Wook Kang ,  Doo Na Kim ,  Han Bit Kim ,  Jae Seob Lee ,  Jae Hwan Chu

IPC: G09G3/3233 ,  H01L27/32 ,  H01L29/786

Abstract: Provided is a display device. The display device comprises a substrate, and a plurality of sub-pixels disposed on the substrate and including alight emitting element and a sub-pixel circuit driving the light emitting element. The sub-pixel circuit comprises a driving transistor controlling a driving current flowing through the light emitting element, a first transistor and a second transistor connected in series between a first node, which is a drain electrode of the driving transistor, and a second node, which is a gate electrode of the driving transistor, to receive the same scan signal, and a gate auxiliary electrode disposed on a gate electrode of the first transistor or the second transistor. The gate auxiliary electrode is connected to the gate electrode of the first transistor or the second transistor.

公开(公告)号：US11450722B2

公开(公告)日：2022-09-20

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: H01L27/14 ,  H01L27/32 ,  H01L29/786 ,  H01L27/12 ,  H01L29/423 ,  H01L29/49 ,  H01L29/51

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：US11309373B2

公开(公告)日：2022-04-19

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 ,  H01L27/12

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.

公开(公告)号：US11195444B2

公开(公告)日：2021-12-07

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：US11164526B2

公开(公告)日：2021-11-02

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.