公开(公告)号：US20230209850A1

公开(公告)日：2023-06-29

申请号：US18086643

申请日：2022-12-22

Applicant: Japan Display Inc.

Inventor： Nobuto MANAGAKI ,  Takuya NAKAGAWA ,  Ryosuke MURATA ,  Masakazu GUNJI ,  Takahiro USHIKUBO ,  Masashi TSUBUKU

IPC: H10K50/11

CPC classification number: H01L51/5004 ,  H01L2251/558

Abstract: According to one embodiment, a display device includes an anode, an organic EL element layer including a hole injection layer, a hole transport layer, an electron blocking layer, a light-emitting layer, a hole blocking layer, an electron transport layer and an electron injection layer, and a cathode, wherein ΔE2_LUMO is defined as a potential barrier between the electron transport layer and the hole blocking layer, and the light-emitting layer, ΔE2_HOMO is defined as a potential barrier between the hole transport layer and the electron blocking layer, and the light-emitting layer, and each of ΔE2_LUMO and ΔE2_HOMO is 0.1 eV or higher and 0.5 eV or less.

公开(公告)号：US20230189624A1

公开(公告)日：2023-06-15

申请号：US18079016

申请日：2022-12-12

Applicant: Japan Display Inc.

Inventor： Ryosuke MURATA

IPC: H10K71/00 ,  H10K59/122 ,  H10K71/20

CPC classification number: H01L51/56 ,  H01L27/3246 ,  H01L51/0017 ,  H01L2227/323

Abstract: According to one embodiment, a method of manufacturing a display device, a substrate including a pair of partitions and a lower electrode disposed between the pair of partitions is formed. Then, an organic EL layer including a first portion including a pair of end surfaces which cover the lower electrode and are in contact with side surfaces of the pair of partitions, and a second portion located on each of the pair of partitions and spaced apart from the first portion, is formed. Thereafter, the second portion is removed by etching. Further, an upper electrode which covers the first portion is formed.