Optical film and backlight unit including the same
US11550185B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2021 |
| Grant date | Jan 10, 2023 |
| Priority date | — |
| Expiry date | Oct 25, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0065
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A backlight unit according to various embodiments of the disclosure may include a light source, a light guide plate configured to guide light emitted from the light source and disposed to face in a first direction, and an optical film disposed over the light guide plate. The optical film may include a first prism sheet including first prism structures arranged side by side to each other along a second direction perpendicular to the first direction, and a second prism sheet disposed over the first prism sheet and including second prism structures arranged side by side to each other along a third direction forming an acute angle with the second direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.