Organic electroluminescent device
US11121344B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2019 |
| Grant date | Sep 14, 2021 |
| Priority date | — |
| Expiry date | May 31, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/351
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.