The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 28, 2024
Filed:
Mar. 30, 2023
Samsung Electronics Co., Ltd., Suwon-si, KR;
Yusaku Konishi, Yokohama, JP;
Takahiro Fujiyama, Yokohama, JP;
Fumiaki Kato, Yokohama, JP;
Keigo Furuta, Yokohama, JP;
Kiyohiko Tsutsumi, Suwon-si, KR;
Masashi Tsuji, Hwaseong-si, KR;
Takao Motoyama, Hwaseong-si, KR;
SAMSUNG ELECTRONICS CO., LTD., Gyeonggi-do, KR;
Abstract
A device having design film thicknesses, to suppress non-uniformity of a light emitting surface, to provide a quantum dot electroluminescence device with good luminous efficiency and light emitting life-span, and to provide an excellent quantum dot electroluminescence device with luminous efficiency and light emitting life-span. A quantum dot electroluminescence device including a hole transport layer, an electron transport layer, and a light emitting layer disposed between the hole transport layer and the electron transport layer, wherein the hole transport layer includes a polymer material and a low molecular material, the light emitting layer includes a quantum dot having a core-shell structure, and a residual film ratio of the hole transport layer is greater than or equal to about 95%.