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：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：US20230112253A1

公开(公告)日：2023-04-13

申请号：US18078072

申请日：2022-12-08

Applicant: Samsung Display Co., LTD.

Inventor： Keun Woo KIM ,  Tae Wook KANG ,  Han Bit KIM ,  Bum Mo SUNG ,  Do Kyeong LEE ,  Jae Seob LEE

IPC: H01L27/32

Abstract: A light emitting display device includes: a light emitting element; a second transistor connected to a scan line; a first transistor which applies a current to the light emitting element; a capacitor connected to a gate electrode of the first transistor; and a third transistor connected to an output electrode of the first transistor and the gate electrode of the first transistor. Channels of the second transistor, the first transistor, and the third transistor are disposed in a polycrystalline semiconductor layer, and a width of a channel of the third transistor is in a range of about 1 µm to about 2 µm, and a length of the channel of the third transistor is in a range of about 1 µm to about 2.5 µm.

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.

公开(公告)号：US20240107808A1

公开(公告)日：2024-03-28

申请号：US18525662

申请日：2023-11-30

Applicant: Samsung Display Co., LTD.

Inventor： Keun Woo KIM ,  Tae Wook KANG ,  Han Bit KIM ,  Bum Mo SUNG ,  Do Kyeong LEE ,  Jae Seob LEE

IPC: H10K59/121

CPC classification number: H10K59/1213 ,  H10K59/1216 ,  H01L29/6675

Abstract: A light emitting display device includes: a light emitting element; a second transistor connected to a scan line; a first transistor which applies a current to the light emitting element; a capacitor connected to a gate electrode of the first transistor; and a third transistor connected to an output electrode of the first transistor and the gate electrode of the first transistor. Channels of the second transistor, the first transistor, and the third transistor are disposed in a polycrystalline semiconductor layer, and a width of a channel of the third transistor is in a range of about 1 μm to about 2 μm, and a length of the channel of the third transistor is in a range of about 1 μm to about 2.5 μm.

公开(公告)号：US20210150960A1

公开(公告)日：2021-05-20

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.