US 11,943,947 B2
Light-emitting device and method of manufacturing light-emitting device
Shinichi Handa, Sakai (JP); and Noboru Iwata, Sakai (JP)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Appl. No. 17/280,887
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
PCT Filed Sep. 28, 2018, PCT No. PCT/JP2018/036380
§ 371(c)(1), (2) Date Mar. 27, 2021,
PCT Pub. No. WO2020/065944, PCT Pub. Date Apr. 2, 2020.
Prior Publication US 2022/0006035 A1, Jan. 6, 2022
Int. Cl. H10K 50/15 (2023.01); H10K 50/115 (2023.01); H10K 50/16 (2023.01); H10K 71/00 (2023.01); H10K 102/10 (2023.01)
CPC H10K 50/15 (2023.02) [H10K 50/115 (2023.02); H10K 50/16 (2023.02); H10K 71/00 (2023.02); H10K 2102/102 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A light-emitting device comprising:
an anode;
a cathode;
a light-emitting layer between the anode and the cathode; and
a hole transport layer between the anode and the light-emitting layer, the hole transport layer containing carbon and a metal oxide in a prescribed and adjusted ratio, wherein
the hole transport layer contains carbon in an atomic ratio of 1.5% to 6.0%, both inclusive, relative to metal atoms.