Prism sheet and backlight unit using the same
US7407317B2 · kind B2 · utility
7Cited by
13References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2005 |
| Grant date | Aug 5, 2008 |
| Priority date | — |
| Expiry date | Dec 22, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133607
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A prism sheet capable of achieving an enhancement in light efficiency and viewing angle characteristics and a backlight unit using the prism sheet are disclosed. The prism sheet includes: a condensing film which transmits light incident to the condensing film; a plurality of prism crests on the condensing film having apexes; and a plurality of reflection patterns formed on the condensing film such that each of the reflection patterns faces a boundary of adjacent prism crests associated with the reflection pattern to reflect light incident onto the reflection patterns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.