Light guide plate structure and light-guide-plate manufacturing method thereof
US9182533B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 29, 2013 |
| Grant date | Nov 10, 2015 |
| Priority date | — |
| Expiry date | Mar 11, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2229/012
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light guide plate structure includes a light guide plate, a first medium layer, a micro structure, a second medium layer, and a reflection layer. The light guide plate has a light exit surface and a bottom surface opposite to the light exit surface. The first medium layer is formed on the light exit surface. The micro structure is formed on the bottom surface for redirecting light inside the light guide plate to emit from the light exit surface. The second medium layer is formed on the micro structure. The refractive index of the first medium layer and the refractive index of the second medium layer are less than the refractive index of the light guide plate but greater than the refractive index of air. The reflection layer is formed on the second medium layer for reflecting light inside the light guide plate to emit from the light exit surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.