US Patent No. 10,143,062

ORGANIC ELECTROLUMINESCENCE DEVICE, ILLUMINATION DEVICE, AND DISPLAY DEVICE


Patent No. 10,143,062
Issue Date November 27, 2018
Title Organic Electroluminescence Device, Illumination Device, And Display Device
Inventorship Hideki Uchida, Sakai (JP)
Katsuhiro Kikuchi, Sakai (JP)
Satoshi Inoue, Sakai (JP)
Eiji Koike, Sakai (JP)
Masanori Ohara, Sakai (JP)
Yuto Tsukamoto, Sakai (JP)
Yoshiyuki Isomura, Sakai (JP)
Kazuki Matsunaga, Sakai (JP)
Assignee SHARP KABUSHIKI KAISHA, Sakai, Osaka (JP)

Claim of US Patent No. 10,143,062

1. An organic electroluminescence device comprising:a base material having a top surface on which a recess is provided;
a reflective layer provided along at least a surface of the recess;
a filling layer filled in the recess via the reflective layer, the filling layer having light transmissivity;
a first electrode provided at least on an upper layer side of the filling layer, the first electrode having light transmissivity;
an organic layer provided on an upper layer side of the first electrode, the organic layer comprising at least a light emitting layer;
a second electrode provided on an upper layer side of the organic layer, the second electrode having light transmissivity; and
low refractive index layers whose refractive indexes are lower than that of the second electrode, the low refractive index layers being provided on the second electrode,
wherein the second electrode has a reflectance of 70% or less.