Organic light emitting display device
US9978945B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | Aug 24, 2015 |
| Grant date | May 22, 2018 |
| Priority date | — |
| Expiry date | Sep 14, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K85/6576
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An organic light emitting display device is disclosed. The organic light emitting display device comprises at least two light emitting parts between an anode and a cathode, each of the light emitting parts having a light emitting layer and an electron transport layer, charge generation layers between the at least two light emitting parts, wherein at least one among the electron transport layers in the at least two light emitting parts includes a pyrimidine derivative at both sides of the core so as to reduce a driving voltage and increase an efficiency of the organic light emitting display device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.