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.

公开(公告)号：US20220139966A1

公开(公告)日：2022-05-05

申请号：US17386854

申请日：2021-07-28

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

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：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：US20230025912A1

公开(公告)日：2023-01-26

申请号：US17870796

申请日：2022-07-21

Applicant: Samsung Display Co., LTD.

Inventor： Joon Woo BAE ,  Keun Woo Kim ,  Jae Hwan CHU ,  Sang Gun CHOI

IPC: H01L27/32

Abstract: A display device including: a display area including a plurality of pixels; and a peripheral area disposed around the display area to include a driving signal transmission line, each of the pixels may include a transistor, a driving voltage line connected to the transistor and the driving signal transmission line, and a light emitting unit connected to the transistor, the pixels may include a first pixel and a second pixel spaced apart from the driving signal transmission line to have different distances from each other, and a concentration of impurities doped in a semiconductor layer of the transistor of the first pixel may be different from a concentration of impurities doped in a semiconductor layer of the transistor of the second pixel.

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：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.

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：US20230065849A1

公开(公告)日：2023-03-02

申请号：US17702670

申请日：2022-03-23

Applicant: Samsung Display Co., Ltd.

Inventor： Sung Won CHO ,  Yun Jong YEO ,  Yu Gwang JEONG ,  Jae Hwan CHU

IPC: H01L29/786 ,  H01L27/32 ,  H01L29/66

Abstract: A display device is disclosed that includes a substrate, a semiconductor layer, a first conductive layer, and a first gate insulating layer. The semiconductor layer is disposed on the substrate and includes a first area and a second area. The first conductive layer is disposed on the semiconductor layer and includes a first gate pattern overlapping the first area and a second gate pattern overlapping the second area. The first gate insulating layer is disposed between the semiconductor layer and the first conductive layer and includes a first insulating layer overlapping the first area and the second area, a second insulating layer overlapping the first area and the second area, and a third insulating layer not overlapping the first area but overlapping the second area. The second insulating layer is disposed between the first insulating layer and the third insulating layer, and has a dielectric constant greater than that of the third insulating layer.

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：US20240145483A1

公开(公告)日：2024-05-02

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

CPC classification number: H01L27/1222 ,  H01L27/124 ,  H01L27/156

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.