公开(公告)号：US20220352471A1

公开(公告)日：2022-11-03

申请号：US17719583

申请日：2022-04-13

Applicant: Samsung Display Co., Ltd.

Inventor： Hyerim KIM ,  Mikyung KIM ,  Yon NAMKOONG ,  Jihyun SEO ,  Hyunsu SHIN ,  Hanbyul JANG

IPC: H01L51/00 ,  C07D409/14 ,  C09K11/06 ,  C07F7/18 ,  C07D491/147 ,  C07C211/54 ,  C07C211/61 ,  C07D333/76

Abstract: Provided are a light-emitting device and an electronic apparatus. The light-emitting device includes a first electrode, a second electrode facing the first electrode, and an interlayer disposed between the first electrode and the second electrode. The interlayer includes an emission layer and an electron blocking layer, the electron blocking layer includes a first electron blocking layer and a second electron blocking layer. The first electron blocking layer includes a first compound, the second electron blocking layer comprises a second compound, and the first compound is different from the second compound.

公开(公告)号：US20210313535A1

公开(公告)日：2021-10-07

申请号：US17156610

申请日：2021-01-24

Applicant: Samsung Display Co., Ltd.

Inventor： Mikyung KIM ,  Jaehyun LEE ,  Jiwon KWAK ,  Hyerim KIM ,  Jihyun SEO ,  Hanbyul JANG

IPC: H01L51/50

Abstract: A light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an interlayer disposed between the first electrode and the second electrode and having an emission layer, wherein the interlayer includes: i) a hole transport region disposed between the first electrode and the emission layer; and ii) an electron transport region disposed between the emission layer and the second electrode; wherein: the emission layer includes three or more hosts; the electron transport region includes a buffer layer; the three or more hosts include a hole transport host, a first electron transport host, and a second electron transport host; the buffer layer includes a third electron transport host; and a lowest unoccupied molecular orbital energy level of the second electron transport host is substantially equal to a lowest unoccupied molecular orbital energy level of the third electron transport host.