Back light unit for backlit displays
US11181776B2 · kind B2 · utility
5Cited by
3References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2020 |
| Grant date | Nov 23, 2021 |
| Priority date | — |
| Expiry date | Sep 9, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133614
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A back light unit includes an array of light emitting diodes, at least two optical films positioned above the array of light emitting diodes, and a pair of brightness enhancement films positioned above the at least two optical films. A majority of the optical films are light splitting optical films having a plurality of light splitting microstructures on at least one surface thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.