Title:
BLUE LIGHT OLED DEVICE, DISPLAY PANEL, AND DISPLAY APPARATUS
Document Type and Number:
WIPO Patent Application WO/2022/067630
Kind Code:
A1
Abstract:
The present invention provides a blue light OLED device, a display panel, and a display apparatus. The blue light OLED device comprises a blue light-emitting layer, and the blue light-emitting layer comprises a blue light-emitting host (BH) and a blue light dopant (BD), wherein the HOMO energy level difference between the blue light-emitting host and the blue light dopant is less than or equal to 0.9 eV; on the basis of the total mass of the light-emitting layer, the content of the blue light dopant is less than or equal to 6%. Therefore, the HOMO of the blue light dopant is not much different from the HOMO of the blue light-emitting host, the hole mobility of the blue light dopant would not be significantly decreased due to trapping too many holes, and thus the blue light dopant can effectively prolong the life of the blue light OLED device under the condition of the described doping ratio.
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Inventors:
CHEN XUEQIN (CN)
CHEN LEI (CN)
CHEN LEI (CN)
Application Number:
PCT/CN2020/119267
Publication Date:
April 07, 2022
Filing Date:
September 30, 2020
Export Citation:
Assignee:
BOE TECHNOLOGY GROUP CO LTD (CN)
International Classes:
C07F5/02; H01L51/54; C09K11/06; H01L27/32
Foreign References:
| CN102437290A | 2012-05-02 | |||
| CN111440204A | 2020-07-24 | |||
| CN111592464A | 2020-08-28 | |||
| US20090227765A1 | 2009-09-10 | |||
| CN1918261A | 2007-02-21 | |||
| CN101490207A | 2009-07-22 |
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
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