Light guide plate with vfariable angled minute reflection projection, backlight module having the same, and display device having the same
US9703033B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 9, 2014 |
| Grant date | Jul 11, 2017 |
| Priority date | — |
| Expiry date | Sep 6, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0068
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light guide plate includes a light exit surface, a reflection surface opposite to the light exit surface, and at least one light incidence surface connecting to the light exit surface and the reflection surface. The reflection surface includes a plurality of minute projection structures projecting toward interior of the light guide plate. Each of the minute projection structures includes at least two side faces coated with a high reflectivity material. The at least two high reflectivity material coated side faces form at least one included angle pointing toward the at least one light incidence surface. With the distance of the minute projection structure from the closest light source getting shorter, the at least one included angle formed thereby is getting smaller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.