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.