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:
Jun. 23, 2020
Filed:
Dec. 29, 2015
Beijing Visionox Technology Co., Ltd., Shangdi, Haidian District Beijing, CN;
Kunshan New Flat Panel Display Technology Center Co., Ltd., Development Zone KunShan, Jiansu, CN;
Kunshan Go-visionox Opto-electronics Co., Ltd., Development Zone KunShan, Jiansu, CN;
BEIJING VISIONOX TECHNOLOGY CO., LTD., Shanghai, Haidian, CN;
KUNSHAN NEW FLAT PANEL DISPLAY TECHNOLOGY CENTER CO., LTD., Development Zone, CN;
KUNSHAN GO-VISIONOX OPTO-ELECTRONICS CO., LTD., Development Zone, CN;
Abstract
An organic electroluminescence device having RGB pixel areas, wherein optical compensation layers are respectively arranged between the red light emitting layer and the first organic functional layer as well as between the green light emitting layer and the first organic functional layer, the optical compensation layers are made of a first hole transport material and a second hole transport material, the first hole transport material has a triplet-state energy level ≥2.48 eV and a HOMO energy level ≤−5.5 eV, the second hole transport material has a HOMO energy level >−5.5 eV, and the difference between the HOMO energy level of the first hole transport material and the HOMO energy level of the second hole transport material is ≤0.2 eV. Its preparation process is simple, and it can significantly reduce power consumption of the light-emitting device so as to increase light-emitting efficiency.