Display device comprising diffraction layer and refraction pattern for controlling viewing angle
US12137577B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2021 |
| Grant date | Nov 5, 2024 |
| Priority date | — |
| Expiry date | Feb 3, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K59/879
Abstract
A display device includes a substrate, a first set of light emitting structures, a second set of light emitting structures, a diffraction layer, and a refraction pattern. The substrate includes a first region and a second region. The first set of light emitting structures overlaps the first region. The second set of light emitting structures overlaps the second region. The diffraction layer overlaps the first region without overlapping the second region. The refraction pattern overlaps the diffraction layer. The diffraction layer includes first-refractive-index members and second-refractive-index members that are alternately disposed. A refractive index of each of the first-refractive-index members is lower than a refractive index of each of the second-refractive-index members.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.