Organic EL display device
US10056574B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2016 |
| Grant date | Aug 21, 2018 |
| Priority date | — |
| Expiry date | Feb 12, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K71/851
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An organic EL display 1 includes a sealing film 2 provided on a plastic substrate 10 to cover an organic EL element 4. The sealing film 2 includes a first sealing layer 25 on a surface of the plastic substrate 10, three stress relief layers 26, 27, and 28 on a surface of the first sealing layer 25, and a second sealing layer 29 on a surface of the stress relief layer 28. The stress relief layers 26, 27, and 28 each have a higher coefficient of thermal expansion than the first and second sealing layers 25 and 29. The stress relief layer 27 interposed between the stress relief layers 26 and 28 has a higher coefficient of thermal expansion than the stress relief layers 26 and 28.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.