Light source with non-white and phosphor-based white LED devices, and LCD assembly
USRE41685E1 · kind E1 · reissue
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2007 |
| Grant date | Sep 14, 2010 |
| Priority date | — |
| Expiry date | Apr 19, 2027 |
Classification
- Technology area (CPC —)General
Abstract
A light source incorporates phosphor-based white light emitting diodes (LEDs). The LEDs may be raised off the floor of the optical cavity to permit light to be emitted from the base of the LED. Additionally, a reflective protrusion may be placed beneath the raised LED to aid in redirecting light forward. The LEDs may be skewed in relation to adjacent LEDs to reduce interference. Non-white LEDs may be incorporated into the light source to permit for selective color tuning. Fluorescent lamps may also be implemented in combination with the LEDs to form a hybrid light source. The light source may be used as a backlight for a liquid crystal display assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.