公开(公告)号：US20240222516A1

公开(公告)日：2024-07-04

申请号：US18473976

申请日：2023-09-25

Applicant: LG DISPLAY CO., LTD.

Inventor： Youngjin YI ,  WonSang RYU ,  SungSoo SHIN

IPC: H01L29/786 ,  G09G3/3266 ,  H01L29/423 ,  H10K59/121

CPC classification number: H01L29/7869 ,  G09G3/3266 ,  H01L29/42384 ,  H01L29/78633 ,  H10K59/1213 ,  G09G2310/0286

Abstract: A thin film transistor substrate can include a first thin film transistor disposed on a substrate, the first thin film transistor including a first source electrode, a first drain electrode, a first active layer and a first gate electrode, in which the first gate electrode is disposed on the first active layer and includes a transparent conductive oxide semiconductor material. Also, the first gate electrode can be transparent and can allow light to be irradiated onto the first active layer to release a buildup of charges from accumulating within the first active layer while the first thin film transistor is in operation in order to maintain a more constant threshold voltage.

公开(公告)号：US20240407205A1

公开(公告)日：2024-12-05

申请号：US18802649

申请日：2024-08-13

Applicant: LG DISPLAY CO., LTD.

Inventor： WonSang RYU ,  SungSoo SHIN ,  Youngjin YI ,  Yubeen LIM ,  SangGul LEE

IPC: H10K59/126 ,  G09G3/3258 ,  H10K59/122

Abstract: A display apparatus includes a first pixel driving circuit, an electric field blocking layer on the first pixel driving circuit, a second pixel driving circuit on the electric field blocking layer, and a first display element and a second display element on the second pixel driving circuit, wherein each of the first pixel driving circuit and the second pixel driving circuit includes at least one thin film transistor, the first pixel driving circuit overlaps the second pixel driving circuit, the first display element is connected with the first pixel driving circuit, and the second display element is connected with the second pixel driving circuit.

公开(公告)号：US20190131376A1

公开(公告)日：2019-05-02

申请号：US16163779

申请日：2018-10-18

Applicant: LG Display Co., Ltd.

Inventor： Yewon HONG ,  SungSoo SHIN ,  Hyelim JI ,  Sohee CHOI

IPC: H01L27/32 ,  G09G3/3266 ,  G09G3/3275

Abstract: A display apparatus includes a plurality of pixels each including an organic light emitting device and a pixel driving circuit. The pixel driving circuit includes a driving transistor controlling a driving current flowing in the organic light emitting device and a first, second, third, fourth, and fifth switching transistor, the third switching transistor selectively connecting a second node which is a drain electrode of the driving transistor to a third node which is a gate electrode of the driving transistor. The third switching transistor differs from a type of each of the driving transistor and the first, second, fourth, and fifth switching transistors. Accordingly, even when the organic light emitting display apparatus is driven at a low frequency, a bezel area is reduced, and a high resolution of a display panel is realized.

公开(公告)号：US20230329047A1

公开(公告)日：2023-10-12

申请号：US18132847

申请日：2023-04-10

Applicant: LG Display Co., Ltd.

Inventor： YounGyoung CHANG ,  WonSang RYU ,  Youngjin YI ,  Hanseok LEE ,  SungSoo SHIN ,  Jungyul YANG ,  JungJune KIM ,  Jihwan JUNG ,  Soyang CHOI ,  Yubeen LIM

IPC: H01L29/12 ,  G09G3/3233

CPC classification number: H10K59/126 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0861 ,  G09G2300/0842

Abstract: A thin film transistor substrate can include a first thin film transistor on a substrate, the first thin film transistor including a first active layer and a first gate electrode; and a second thin film transistor on the substrate, the second thin film transistor including a second active layer and a second gate electrode, each of the second active layer and the second gate electrode being located farther away from the substrate than the first active layer and the first gate electrode. Also, the thin film transistor substrate can include a first insulating layer disposed between the first gate electrode and the second active layer; and a first connection electrode connecting the first gate electrode with the second active layer, in which the first connection electrode extends through a first contact hole in the first insulating layer and contacts both of the first gate electrode and the second active layer.

公开(公告)号：US20220208926A1

公开(公告)日：2022-06-30

申请号：US17560642

申请日：2021-12-23

Applicant: LG DISPLAY CO., LTD.

Inventor： WonSang RYU ,  SungSoo SHIN ,  Youngjin YI ,  Yubeen LIM ,  SangGul LEE

IPC: H01L27/32

Abstract: A display apparatus includes a first pixel driving circuit, an electric field blocking layer on the first pixel driving circuit, a second pixel driving circuit on the electric field blocking layer, and a first display element and a second display element on the second pixel driving circuit, wherein each of the first pixel driving circuit and the second pixel driving circuit includes at least one thin film transistor, the first pixel driving circuit overlaps with the second pixel driving circuit, the first display element is connected with the first pixel driving circuit, and the second display element is connected with the second pixel driving circuit.