Backlight module and display apparatus
US11391987B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2020 |
| Grant date | Jul 19, 2022 |
| Priority date | — |
| Expiry date | Dec 3, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133607
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A backlight module including a light guide plate, a light source, a prism sheet and a light absorbing sheet is provided. The light guide plate has a light incident surface, a light emitting surface connected to the light incident surface and a bottom surface opposite to the light emitting surface. At least one of the light emitting surface and the bottom surface of the light guide plate is disposed with a plurality of micro lens structures. The light source is disposed on a side of the light incident surface of the light guide plate. The prism sheet is overlapped with the light emitting surface of the light guide plate and has a plurality of prism structures facing the light emitting surface with an extending direction parallel to the light incident surface. The light absorbing sheet is disposed on a side of the bottom surface of the light guide plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.