公开(公告)号：US12022691B2

公开(公告)日：2024-06-25

申请号：US17360081

申请日：2021-06-28

Applicant: Samsung Display Co., Ltd.

Inventor： Seunghyun Lee ,  Sungho Kim ,  Seokje Seong ,  Jinsung An ,  Minwoo Woo ,  Wangwoo Lee ,  Hyung Joo Jun

IPC: H10K59/121 ,  H01L27/12 ,  H10K59/126 ,  H10K59/131

CPC classification number: H10K59/1213 ,  H10K59/126 ,  H10K59/131 ,  H01L27/1225 ,  H01L27/1251

Abstract: An organic light emitting display device includes a first transistor including a first active region and a first gate electrode disposed on the first active region, a third transistor including a third lower gate electrode disposed on the first gate electrode, a third active region disposed on the third lower gate electrode, and a third upper gate electrode disposed on the third active region, and a fourth transistor including a fourth active region disposed in the same layer as the first active region and a fourth gate electrode disposed on the fourth active region. The first transistor is a first-type transistor, and the fourth transistor is a second-type transistor different from the first-type transistor.