公开(公告)号：US20250169305A1

公开(公告)日：2025-05-22

申请号：US18948191

申请日：2024-11-14

Applicant: LG Display Co., Ltd.

Inventor： Choong-Hyo KIM ,  Moon-Soo KIM

IPC: H10K59/131 ,  H10K59/12 ,  H10K59/80 ,  H10K102/00

Abstract: An electroluminescent display device includes a substrate provided with a sub-pixel including an emission area and a contact area; a light-emitting diode in the emission area and including a first electrode, a light-emitting layer, and a second electrode; a first auxiliary electrode in the contact area and connected to the second electrode; and an insulation layer between the first auxiliary electrode and the light-emitting diode and having a contact hole exposing the first auxiliary electrode, wherein the contact hole includes a portion extending in a first direction and a portion extending in a second direction, and an undercut structure where a bottom surface of the insulation layer is exposed is provided at at least one side of the contact hole, and wherein the light-emitting layer is cut off by the undercut structure, and the second electrode is in contact with the first auxiliary electrode under the undercut structure.

公开(公告)号：US20250169329A1

公开(公告)日：2025-05-22

申请号：US18953802

申请日：2024-11-20

Applicant: LG Display Co., Ltd.

Inventor： Choong-Hyo KIM

IPC: H10K59/80 ,  H10K59/124

Abstract: An electroluminescent display device includes a substrate provided with a sub-pixel having an emission area and a contact area; a light-emitting diode provided in the emission area over the substrate and including a first electrode, a light-emitting layer, and a second electrode; a first auxiliary electrode provided in the contact area over the substrate and including a first portion of a first direction and a second portion of a second direction; a plurality of insulation patterns provided over the first auxiliary electrode and spaced apart from each other; and a second auxiliary electrode covering the plurality of insulation patterns and electrically connected to the first auxiliary electrode. The light-emitting layer is separated by the plurality of insulation patterns to thereby expose the second auxiliary electrode, and the second electrode is in contact with the exposed second auxiliary electrode.