公开(公告)号：US20210005693A1

公开(公告)日：2021-01-07

申请号：US16921432

申请日：2020-07-06

Applicant: LG Display Co., Ltd.

Inventor： Seong-Pil CHO ,  Dong-Yup KIM ,  Kyung-Mo SON ,  Sang-Soon NOH ,  Jun-Seuk LEE ,  Yong-Bin KANG ,  Kye-Chul CHOI ,  Sung-Ho MOON ,  Sang-Gul LEE ,  Byeong-Keun KIM ,  Kyoung-Soo LEE ,  Hyun-Gyo JEONG ,  Jin-Kyu ROH ,  Jung-Doo JIN ,  Ki-Hyun KWON ,  Hee-Jin JUNG ,  Jang-Dae KIM ,  Won-Ho SON ,  Chan-Ho KIM

IPC: H01L27/32

Abstract: A display apparatus including a first thin-film transistor, a second thin-film transistor and a third thin-film transistor is provided. The first thin-film transistor includes a first active layer composed of a polysilicon material, a first gate electrode overlapping the first active layer such that a first gate insulating layer is interposed therebetween, a first source electrode and a first drain electrode. The first gate electrode includes n layers. The first source electrode and the first drain electrode are connected to the first active layer. The second thin-film transistor includes a second active layer composed of a polysilicon material, a second gate electrode overlapping the second active layer such that a first gate insulating layer is interposed therebetween, a second source electrode and a second drain electrode. The second gate electrode includes n+1 layers. The second source electrode and the second drain electrode are connected to the second active layer.

公开(公告)号：US20240224665A1

公开(公告)日：2024-07-04

申请号：US18523471

申请日：2023-11-29

Applicant: LG Display Co., Ltd.

Inventor： Jang-Dae KIM

IPC: H10K59/131 ,  H10K59/121

CPC classification number: H10K59/131 ,  H10K59/1213

Abstract: A display device can a display area and a non-display area adjacent to the display area disposed on a substrate, and a first thin film transistor disposed in the display area and including a first semiconductor pattern, a first gate electrode, a first source electrode and a first drain electrode. The display device further includes an emitting element disposed in the display area and connected to the first thin film transistor, and a first lower conductive pattern disposed under the first semiconductor pattern. The first lower conductive pattern can overlap with the first semiconductor pattern and has at least one uneven pattern on a top surface thereof. Further, the first lower conductive pattern is connected to one of the first source electrode and the first drain electrode.

公开(公告)号：US20230389358A1

公开(公告)日：2023-11-30

申请号：US18231546

申请日：2023-08-08

Applicant: LG Display Co., Ltd.

Inventor： Seong-Pil CHO ,  Dong-Yup KIM ,  Kyung-Mo SON ,  Sang-Soon NOH ,  Jun-Seuk LEE ,  Yong-Bin KANG ,  Kye-Chul CHOI ,  Sung-Ho MOON ,  Sang-Gul LEE ,  Byeong-Keun KIM ,  Kyoung-Soo LEE ,  Hyun-Gyo JEONG ,  Jin-Kyu ROH ,  Jung-Doo JIN ,  Ki-Hyun KWON ,  Hee-Jin JUNG ,  Jang-Dae KIM ,  Won-Ho SON ,  Chan-Ho KIM

IPC: H10K59/121 ,  H01L29/786 ,  H01L29/49 ,  H01L27/12

CPC classification number: H10K59/1213 ,  H10K59/1216 ,  H01L29/78675 ,  H01L29/4908 ,  H01L27/1255 ,  H01L27/1225 ,  H01L29/7869

Abstract: A display apparatus can include a first thin-film transistor including a first active layer having a first polysilicon material, a first gate electrode overlapping the first active layer, a first electrode and a second electrode; a second thin-film transistor including a second active layer having an oxide semiconductor, a second gate electrode overlapping the second active layer, a third electrode and a fourth electrode; and a first emitting electrode of a light emitting element electrically connected to the second electrode of the first thin-film transistor. Also, one end of the first active layer having the first polysilicon material is electrically connected to one or the other end of the second active layer having the oxide semiconductor.