Backlight module having two optical sheets
US7740394B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2007 |
| Grant date | Jun 22, 2010 |
| Priority date | — |
| Expiry date | Jul 30, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133608
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A backlight includes a case, pluralities of light sources, pluralities of needles, pluralities of supporting portions, a first optical sheet, a second optical sheet, and pluralities of first microstructures. The light sources are disposed inside the case, the needles are disposed on the bottom surface of the case, and the supporting portions are disposed on the needles. The first optical sheet is supported on the top of the needles. The second optical sheet placed under the first optical sheet has pluralities of holes, and the needles penetrate the holes. The second optical sheet is supported on the supporting portions. The first microstructures are disposed on the first optical sheet or on the second optical sheet to provide a light condensing function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.