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:
Sep. 14, 2021
Filed:
Dec. 31, 2019
Yungu (Gu'an) Technology Co., Ltd., Langfang, CN;
Xiaokang Zhou, Langfang, CN;
Mengzhen Li, Langfang, CN;
Lin He, Langfang, CN;
Weiwei Li, Langfang, CN;
Hui Pang, Langfang, CN;
Tiantian Li, Langfang, CN;
Jingwen Tian, Langfang, CN;
Xiaoyu Gao, Langfang, CN;
Xiuqi Huang, Langfang, CN;
YUNGU (GU'AN) TECHNOLOGY CO., LTD., Langfang, CN;
Abstract
The present application discloses an organic electroluminescent device that includes a plurality of kinds of light-emitting units having different light-emitting wavelengths, wherein the light-emitting units are organic light-emitting diodes, the organic light-emitting diodes include a plurality of single-colored organic light-emitting diodes and/or a plurality of white-light organic light-emitting diodes provided with optical filters; at least one kind of the organic light-emitting diodes has a microcavity structure; a microcavity optical length Li of the organic light-emitting diode having the microcavity structure and a light-emitting wavelength λi of the corresponding light-emitting unit meet the following formula: Li=niλi, wherein ni≥2, ni is a positive integer, and the ni corresponding to at least one of the plurality of kinds of light-emitting units having different light-emitting wavelengths λi is larger than or equal to 3; m is the number of the kinds of the light-emitting units, m≥i≥1, i and m are positive integers.