Backlight module
US11187845B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2020 |
| Grant date | Nov 30, 2021 |
| Priority date | — |
| Expiry date | Aug 7, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133607
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A backlight module includes a light guide plate, a light source, a prism sheet, and a reflective film. The light source is disposed on a light-incident surface of the light guide plate. The prism sheet is disposed on a light exit surface of the light guide plate, and includes a plurality of first prism structures that protrude toward the light exit surface of the light guide plate. The reflective film is disposed on a reflection surface of the light guide plate, and includes a film body, a plurality of second prism structures that are disposed on the film body and that protrude from the film body toward the reflection surface, and a light absorbing layer that is disposed on the film body opposite to the second prism structures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.