Backlight unit and liquid crystal display device
US8836894B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2012 |
| Grant date | Sep 16, 2014 |
| Priority date | — |
| Expiry date | Mar 14, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133615
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A backlight unit and a liquid crystal display device include a shell assembly having a display window, a liquid crystal panel installed in the shell assembly, and a backlight unit providing a backlight source. The backlight unit includes a light-outgoing top surface just opposite to the liquid crystal panel, a light guide plate adjacent to the incident side of the light-outgoing top surface, an optical diaphragm, a reflecting plate arranged on the bottom of the light guide plate, and a light source. The substrate or cooling plate is bent at its side close to the light-outgoing top surface to form a first bent portion; the first bent portion has a first reflecting surface for reflecting the light, making most of the light emitted by the light source enter the light guide plate, thus greatly improving the utilization ratio and transmittance of the light of the light source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.