Display apparatus
US11217777B2 · kind B2 · utility
3Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2019 |
| Grant date | Jan 4, 2022 |
| Priority date | — |
| Expiry date | Jan 29, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K59/8731
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A display apparatus includes: a display element configured to emit light; a first refractive layer on the display element and having an opening corresponding to the display element; a light extraction pattern located inside the opening of the first refractive layer; and a second refractive layer on the first refractive layer, the second refractive layer covering the first refractive layer and the light extraction pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.