公开(公告)号：US12078888B2

公开(公告)日：2024-09-03

申请号：US17532198

申请日：2021-11-22

Applicant: LG DISPLAY CO., LTD.

Inventor： Kyung Ha Lee ,  Sung Woo Choi ,  Nam Kook Kim

IPC: G02F1/1335 ,  G02F1/13357 ,  H01L25/075 ,  H01L33/62

CPC classification number: G02F1/133612 ,  G02F1/133603 ,  H01L25/0753 ,  H01L33/62

Abstract: A display device including a backlight unit that includes a barrier layer disposed between a light-emitting chip and an electrode pad to reduce the contact area between a solder and the electrode pad due to the barrier layer, so that a portion of the electrode pad overlapping with the barrier layer is left behind without being diffused into the solder, and rework can be performed on a process of mounting the light-emitting chip.

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.

公开(公告)号：US20230217772A1

公开(公告)日：2023-07-06

申请号：US18082026

申请日：2022-12-15

Applicant: LG Display Co., Ltd.

Inventor： Jung Eun Lee ,  Sung Woo Choi

IPC: H10K59/38 ,  H10K59/121

CPC classification number: H01L27/322 ,  H01L27/326 ,  H01L27/1214

Abstract: A display apparatus including color filters is disclosed. The display apparatus may comprise a device substrate including pixel areas. A light-emitting device may be disposed on each pixel area. An encapsulating layer covering the light-emitting devices may be disposed on the device substrate. The color filters may be disposed on the encapsulating layer. For example, separating dams defining openings overlapping with the light-emitting devices may be disposed on the encapsulating layer. The pixel areas disposed in a first direction may display the same color. Some of the separating dams extending in a second direction that is different from the first direction between the pixel areas may have a relatively short length. Thus, in the display apparatus, the volume difference between the color filters may be reduced.