Directional backlight unit, three-dimensional (3D) image display apparatus, and 3D image displaying method
US10627642B2 · kind B2 · utility
2Cited by
4References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 1, 2018 |
| Grant date | Apr 21, 2020 |
| Priority date | — |
| Expiry date | Oct 1, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/356
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A directional backlight unit, a three-dimensional (3D) image display apparatus, and a 3D image displaying method are provided. The directional backlight unit includes a light guide plate having an emission surface on which a plurality of grating elements including first and second groups of grating elements are provided. The plurality of grating elements are arranged such that light beams emitted from the first and second groups of grating elements commonly propagate through a plurality of pixel points and respectively form first and second groups of view points of which corresponding regions do not overlap with each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.