公开(公告)号：US20240054961A1

公开(公告)日：2024-02-15

申请号：US18362493

申请日：2023-07-31

Applicant: LG Display Co., Ltd.

Inventor： SungSoo Shin ,  Jungyul Yang ,  Hanseok Lee ,  HyeJI Jeon ,  YounGyoung Chang ,  WonSang Ryu

IPC: G09G3/3266 ,  H01L27/12 ,  H01L29/786 ,  G09G3/36

CPC classification number: G09G3/3266 ,  H01L27/124 ,  H01L27/1255 ,  H01L29/78633 ,  G09G3/3677 ,  G09G2300/0408 ,  G09G2310/0286 ,  G09G2300/0426

Abstract: Disclosed is a thin film transistor substrate comprising a substrate; a first thin film transistor on the substrate, the first thin film transistor including a first active layer and a first gate electrode; a second thin film transistor on the substrate, the second thin film transistor including a second active layer and a second gate electrode above the first active layer and the first gate electrode; a first insulating layer between the first gate electrode and the second active layer; and; and a first connection electrode connecting together the first active layer and the second active layer, the first connection electrode extending through a first contact hole in the first insulating layer and is in contact with each of the first active layer and the second active layer and a display apparatus including the same.

公开(公告)号：US12089453B2

公开(公告)日：2024-09-10

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

CPC classification number: H10K59/126 ,  H10K59/122 ,  G09G3/3258 ,  G09G2330/04

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.

公开(公告)号：US10937852B2

公开(公告)日：2021-03-02

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 ,  G09G3/3275 ,  G09G3/3266 ,  G09G3/3233 ,  G09G3/3291

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.