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:
Dec. 06, 2022
Filed:
Jan. 29, 2019
National Chiao Tung University, Hsinchu, TW;
Hsin-Fei Meng, Hsinchu, TW;
Sheng-Fu Horng, Hsinchu, TW;
Yu-Chiang Chao, Taoyuan, TW;
Chih-Yu Chang, Taipei, TW;
Yu-Fan Chang, Guanxi Township, Hsinchu County, TW;
Mei-Peng Liou, New Taipei, TW;
Qian-Wei Lin, Taipei, TW;
Hsiao-Tso Su, Chiayi, TW;
Chiung-Wen Chang, Chiayi, TW;
NATIONAL CHIAO TUNG UNIVERSITY, Hsinchu, TW;
Abstract
An organic light-emitting device includes a first electrode layer, an emission layer, an electron transporting layer, an electron injection layer, and a second electrode layer sequentially formed from bottom to top. The emission layer includes a guest light-emitting material, a first phenyl phosphine oxide derivative and a hole transporting material. The electron transporting layer includes a second phenyl phosphine oxide derivative and a third phenyl phosphine oxide derivative different from the second phenyl phosphine oxide derivative. One of the second phenyl phosphine oxide derivative and the third phenyl phosphine oxide derivative is identical to the first phenyl phosphine oxide derivative. The electron injection layer includes an alkaline metal compound.