Directional backlight unit and 3D image display device having the same
US10379280B2 · kind B2 · utility
2Cited by
3References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 24, 2017 |
| Grant date | Aug 13, 2019 |
| Priority date | — |
| Expiry date | May 4, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/1006
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A directional backlight unit and a three-dimensional (3D) image display device including the directional backlight unit are provided. The directional backlight unit includes: a light guide plate, a light source configured to irradiate an incident surface of the light guide plate with a plurality of color lights, and a grating that includes a sub-grating configured to react to all of the plurality of color lights. The directional backlight unit may further include a color filter that corresponds to a plurality of color lights emitted from each sub-grating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.