公开(公告)号：US11081594B2

公开(公告)日：2021-08-03

申请号：US16711049

申请日：2019-12-11

Applicant: LG DISPLAY CO., LTD.

Inventor： Sunyoung Choi ,  Kummi Oh

IPC: H01L29/786 ,  H01L25/075 ,  H01L27/12

Abstract: In a display panel according to the disclosure, the display panel includes a substrate, an active layer having a source region, a drain region and a channel region on the substrate, a source electrode contacted with the source region, a drain electrode contacted with the drain region, an upper gate electrode above the active layer, and a lower gate electrode below the active layer. An edge of the lower gate electrode closest to the drain region overlaps with the channel region, and the source region and the drain region do not overlap with the upper gate electrode. The driving element constituting the display panel can generate a high driving current without deteriorating the characteristics thereof, thereby stably maintaining the luminance of the display panel.

公开(公告)号：US12302706B2

公开(公告)日：2025-05-13

申请号：US18211757

申请日：2023-06-20

Applicant: LG Display Co., Ltd.

Inventor： Moonho Park ,  Sangsoon Noh ,  Dongchae Shin ,  Sunyoung Choi ,  Mijin Jeong

IPC: H10K59/121 ,  G06F3/041 ,  G06F3/044 ,  H10K59/123 ,  H10K59/124 ,  H10K59/126 ,  H10K59/131 ,  H10K59/40 ,  H10K59/80 ,  G09G3/3233

Abstract: A thin film transistor, in one or more examples, includes a semiconductor layer, an upper gate electrode overlapped with the semiconductor layer, an upper insulating layer disposed between the semiconductor layer and the upper gate electrode, a first lower gate electrode overlapped with the semiconductor layer, a second lower gate electrode disposed between the semiconductor layer and the first lower gate electrode, overlapped with the semiconductor layer, and configured to have a width smaller than that of the upper gate electrode, a first lower insulating layer disposed between the first lower gate electrode and the second lower gate electrode, and a second lower insulating layer disposed between the second lower gate electrode and the semiconductor layer. A display apparatus including a thin film transistor is also disclosed.

公开(公告)号：US20240107805A1

公开(公告)日：2024-03-28

申请号：US18213047

申请日：2023-06-22

Applicant: LG Display Co., Ltd.

Inventor： Mijin Jeong ,  Sangsoon Noh ,  Dongchae Shin ,  Sunyoung Choi ,  Moonho Park

IPC: H10K59/121 ,  H01L27/12

CPC classification number: H10K59/1213 ,  H01L27/1222

Abstract: The present disclosure relates to an organic light emitting display device, and more particularly, to a thin film transistor using an oxide semiconductor material for a plurality of thin film transistors constituting a circuit portion of a sub-pixel and a display panel including the thin film transistor. The plurality of thin film transistors includes a plurality of switching transistors and a driving transistor. Each of the plurality of switching transistors has a first dose, and the driving transistor has a second dose different from the first dose.