Organic light emitting display device for enhancing efficiency
US9853231B2 · kind B2 · utility
2Cited by
3References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 11, 2016 |
| Grant date | Dec 26, 2017 |
| Priority date | — |
| Expiry date | May 11, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/351
Abstract
Disclosed is an organic light emitting display device. The organic light emitting display device includes a first emission part between a first electrode and a second electrode and a second emission part on the first emission part. The first emission part includes a first hole transport layer and a first emission layer, and the second emission part includes a second hole transport layer and a second emission layer. A thickness of the second hole transport layer is greater than a thickness of the first hole transport layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.