US 12,245,459 B2
Light-emitting device including a light-emitting diode and a protective diode and display device
Yoshihiro Ueta, Sakai (JP)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Appl. No. 17/630,543
Filed by Sharp Kabushiki Kaisha, Sakai (JP)
PCT Filed Aug. 23, 2019, PCT No. PCT/JP2019/033093
§ 371(c)(1), (2) Date Jan. 27, 2022,
PCT Pub. No. WO2021/038635, PCT Pub. Date Mar. 4, 2021.
Prior Publication US 2022/0246693 A1, Aug. 4, 2022
Int. Cl. H10K 59/00 (2023.01); H10K 50/15 (2023.01); H10K 59/122 (2023.01); H10K 71/00 (2023.01)
CPC H10K 59/00 (2023.02) [H10K 50/156 (2023.02); H10K 71/00 (2023.02); H10K 59/122 (2023.02)] 12 Claims
OG exemplary drawing
 
1. A light-emitting device comprising:
a light-emitting diode including a light-emitting layer of quantum dots or an organic light-emitting material; and
a protection diode located adjacent to, and connected in parallel with, the light-emitting diode, wherein
the protection diode is operated in reverse bias to protect the light-emitting diode,
the light-emitting diode includes an electrode and a hole transport layer,
the protection diode includes another hole transport layer containing a same material as at least a portion of the hole transport layer, the portion being provided on the electrode, and
the protection diode further includes an anode electrode in direct contact with a surface of the another hole transport layer, and a cathode electrode in direct contact with another surface of the another hole transport layer.