公开(公告)号：US11901398B2

公开(公告)日：2024-02-13

申请号：US17136967

申请日：2020-12-29

Applicant: LG Display Co., Ltd.

Inventor： Dong-Il Chu ,  Min-Joo Kim ,  Jae-Won Lee ,  Sang-Hoon Pak ,  Sang-Hyuk Won ,  Seung-Hyun Youk ,  Seon-Hee Lee

IPC: H01L27/15 ,  H01L29/786 ,  H01L33/38 ,  H01L33/62 ,  H01L33/12

CPC classification number: H01L27/156 ,  H01L29/7869 ,  H01L29/78618 ,  H01L33/12 ,  H01L33/38 ,  H01L33/62

Abstract: A display apparatus includes a substrate including a penetrating area including a substrate hole, and a separating area surrounding the penetrating area, a first buffer layer including a first-buffer lower layer on the substrate, and a first-buffer upper layer on the first-buffer lower layer, a first TFT including a first semiconductor pattern on the first-buffer upper layer, and a first gate electrode overlapping with the first semiconductor pattern under conditions that a first gate insulating film is interposed therebetween, and first source/drain electrodes connected to the first semiconductor pattern, a second TFT, a separation structure disposed in the separating area of the substrate while including a first separation layer having the same stacked structure as the first-buffer upper layer, a second separation layer having the same stacked structure as the first gate insulating film, and a third separation layer having the same stacked structure as the first gate electrode.