Title:
BLUE ORGANIC ELECTROLUMINESCENT DEVICE, DISPLAY PANEL AND DISPLAY APPARATUS
Document Type and Number:
WIPO Patent Application WO/2022/126499
Kind Code:
A1
Abstract:
A blue organic electroluminescent device, a display panel and a display apparatus. The blue organic electroluminescent device comprises a luminous layer (4), wherein the luminous layer (4) comprises a matrix material and a blue fluorescent doping material doped in the matrix material; and the dipole moments of both the matrix material and the blue fluorescent doping material are 0-1D. A high energy transfer efficiency and charge balance can be ensured, and it is ensured that a luminous spectrum is a narrow spectrum, so that a better color purity and higher external quantum efficiency (EQE) are achieved, thereby obtaining a blue organic electroluminescent device having a high color purity and a high luminous efficiency.
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Inventors:
ZHANG DONGXU (CN)
GAO RONGRONG (CN)
QIU LIXIA (CN)
LIU YANG (CN)
GAO RONGRONG (CN)
QIU LIXIA (CN)
LIU YANG (CN)
Application Number:
PCT/CN2020/137230
Publication Date:
June 23, 2022
Filing Date:
December 17, 2020
Export Citation:
Assignee:
BOE TECHNOLOGY GROUP CO LTD (CN)
International Classes:
H05B33/14; H05B33/10
Foreign References:
| TW201012293A | 2010-03-16 | |||
| CN102214795A | 2011-10-12 | |||
| US20100051998A1 | 2010-03-04 | |||
| US20070124121A1 | 2007-05-31 |
Other References:
LIU WEIQIANG;CUI RONGZHEN;WU RUIXIA;LI YUNHUI;YANG XIUYUN;ZHOU LIANG: "Recent Progress on Blue Delayed Fluorescent Materials and Devices", CHINESE JOURNAL OF APPLIED CHEMISTRY, vol. 36, no. 1, 10 January 2019 (2019-01-10), pages 1 - 9, XP055944154, ISSN: 1000-0518, DOI: 10.11944/j.issn.1000-0518.2019.01.180071
Attorney, Agent or Firm:
BEIJING INTELLEGAL INTELLECTUAL PROPERTY AGENT LTD. (CN)
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