US 12,376,439 B2
Back-light unit having light-emitting chips and display apparatus having the same
Nam Kook Kim, Paju-si (KR); Sung Woo Choi, Paju-si (KR); and Seon Hui Hwang, Paju-si (KR)
Assigned to LG Display Co., Ltd, Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Dec. 29, 2022, as Appl. No. 18/091,356.
Claims priority of application No. 10-2022-0000003 (KR), filed on Jan. 1, 2022; application No. 10-2022-0000004 (KR), filed on Jan. 1, 2022; and application No. 10-2022-0080655 (KR), filed on Jun. 30, 2022.
Prior Publication US 2023/0216012 A1, Jul. 6, 2023
Int. Cl. H10H 20/00 (2025.01); G02F 1/13357 (2006.01); H01L 25/075 (2006.01); H10H 20/857 (2025.01)
CPC H10H 20/857 (2025.01) [G02F 1/133603 (2013.01); G02F 1/133605 (2013.01); G02F 1/133606 (2013.01); H01L 25/0753 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A back-light unit comprising:
a ground voltage line on a light-source substrate;
a lower insulating layer on the light-source substrate, the lower insulating layer on the ground voltage line;
a plurality of light-emitting chips on the lower insulating layer, the plurality of light-emitting chips spaced apart the ground voltage line;
a plurality of emission connecting lines on the lower insulating layer, the plurality of emission connecting lines electrically connecting together the plurality of light-emitting chips;
a ground dummy pattern between the plurality of light-emitting chips and the plurality of emission connecting lines, the ground dummy pattern overlapping the ground voltage line and electrically connected to the ground voltage line,
an upper insulating layer on the plurality of emission connecting lines and the ground dummy pattern, the upper insulating layer surrounding the plurality of light-emitting chips; and
a reflective plate on the upper insulating layer, the reflective plate including penetrating holes into which the plurality of light-emitting chips are inserted.