公开(公告)号：US20240055551A1

公开(公告)日：2024-02-15

申请号：US18278480

申请日：2021-04-14

Applicant: Sharp Display Technology Corporation

Inventor： Masayuki KANEHIRO ,  Youhei NAKANISHI ,  Shota OKAMOTO

IPC: H01L33/06 ,  H01L33/62

CPC classification number: H01L33/06 ,  H01L33/62 ,  H01L2933/0016

Abstract: A light-emitting device includes a bank provided with an opening including an opening sidewall that is inclined, a lower layer electrode provided with an inclined face and formed on the bank, closing the opening, a upper layer electrode provided with an inclined face and formed above the second electrode, and an EL layer provided with an inclined face and formed between the lower layer electrode and the upper layer electrode, adjacently to the lower layer electrode and the upper layer electrode. The light-emitting device further includes a first refractive index layer having a refractive index higher than 1.7, and a second refractive index layer having a refractive index lower than the refractive index of the first refractive index layer. The first and second refractive index layers are formed in this order on the upper layer electrode at a through-hole.