Organic light emitting device
US10020349B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 2016 |
| Grant date | Jul 10, 2018 |
| Priority date | — |
| Expiry date | May 26, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2101/40
Abstract
Provided is an organic light emitting device. The organic light emitting device includes a plurality of light emitting units laminated between a first electrode and a second electrode and each including an organic emitting layer, and a charge generation layer between the light emitting units. Further, the charge generation layer includes an N-type charge generation layer disposed to be in direct contact with an organic emitting layer of the adjacent light emitting unit and HOMO levels of the N-type charge generation layer and the organic emitting layer are regulated. Thus, a color change rate based on a viewing angle can be improved, and efficiency and a lifetime of the organic light emitting device can be improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.