Backlight and display device
US12282224B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2024 |
| Grant date | Apr 22, 2025 |
| Priority date | — |
| Expiry date | Aug 7, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133605
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A backlight includes: a light source capable of emitting light spreading in first and second directions perpendicular to each other, from an optical axis; a first cylindrical lens that refracts and brings the light closer along the first direction to the optical axis, the first cylindrical lens overlapping with the light source in a third direction perpendicular to the first and second directions; a second cylindrical lens that refracts and brings the light even closer along the first direction to the optical axis, the second cylindrical lens overlapping with the light source and the first cylindrical lens in the third direction; and a reflector that reflects and brings the light closer along the second direction to the optical axis, the reflector being positioned between the first cylindrical lens and the second cylindrical lens in the third direction, the reflector avoiding overlap with the light source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.