Backlight module
US11520099B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2021 |
| Grant date | Dec 6, 2022 |
| Priority date | — |
| Expiry date | Oct 15, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0088
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A backlight module including a light source, a light guiding element, a brightness enhancement component, and a reflecting part is provided. A plate body of the light guiding element has an upper surface, a lower surface, and a light incident surface. A plurality of optical microstructures of the light guiding element are formed on the lower surface. The brightness enhancement component is disposed on a side of the upper surface. The brightness enhancement component includes two brightness enhancement films having a plurality of prism structures and disposed perpendicular to each other. The reflecting part is disposed on a side of the lower surface in the light guiding element. Each of the optical microstructures has a light receiving surface and a shady surface, and an angle between the light receiving surface and the lower surface is ranged between 2 degrees and 12 degrees.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.