Organic light emitting display device for enhancing efficiency
USRE50505E1 · kind E1 · reissue
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57Claims
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Key dates
| Filing date | Dec 12, 2022 |
| Grant date | Jul 22, 2025 |
| Priority date | — |
| Expiry date | Dec 12, 2042 |
Classification
- Technology area (CPC —)General
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.