Backlight unit and display device including the same
US11143912B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2020 |
| Grant date | Oct 12, 2021 |
| Priority date | — |
| Expiry date | Jul 27, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133614
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Embodiments of the present disclosure provide a backlight unit comprising at least one light emitting unit emitting light in a first wavelength band, a phosphor film exciting the light in the first wavelength band emitted from the light emitting unit to emit the light in the first to a third wavelength bands, a first reflective film disposed in a position corresponding to a rim of the phosphor film and causing to reflect the light in the first wavelength band, a second reflective film disposed adjacent to the first reflective film and causing to reflect the light in the second and third wavelength bands, and a dam disposed around the light emitting unit. A display device using the backlight unit is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.