公开(公告)号：US20230216012A1

公开(公告)日：2023-07-06

申请号：US18091356

申请日：2022-12-29

Applicant: LG Display Co., Ltd.

Inventor： Nam Kook Kim ,  Sung Woo Choi ,  Seon Hui Hwang

IPC: H01L33/62 ,  H01L25/075 ,  G02F1/13357

CPC classification number: H01L33/62 ,  H01L25/0753 ,  G02F1/133603 ,  G02F1/133605 ,  G02F1/133606

Abstract: A back-light unit including light-emitting chips and a display apparatus are disclosed. The back-light unit includes a driving voltage line on a substrate, and a ground voltage line spaced apart from the driving voltage line. The light-emitting chips are on a lower insulating layer covering the driving voltage line and the ground voltage line. A driving chip electrically connected to the ground voltage line may be on the substrate. Each of the light-emitting chips may be electrically connected between the driving voltage line and the driving chip by emission connecting lines. A driving dummy pattern and/or a ground dummy pattern is between the light-emitting chips and the emission connecting lines. The driving dummy pattern is electrically connected to the driving voltage line, and the ground dummy pattern is electrically connected to the ground voltage line. Thus, a luminance difference of the light-emitting chips may be prevented or at least reduced.