06504301 is referenced by 290 patents and cites 10 patents.

An LED package and a method of fabricating the LED package utilize a prefabricated fluorescent member that contains a fluorescent material that can be separately tested for optical properties before assembly to ensure the proper performance of the LED package with respect to the color of the output light. The LED package includes one or more LED dies that operate as the light source of the package. Preferably, the fluorescent material included in the prefabricated fluorescent member and the LED dies of the LED package are selectively chosen, so that output light generated by the LED package duplicates natural white light. In a first embodiment of the invention, the prefabricated fluorescent member is a substantially planar plate having a disk-like shape. In a second embodiment, the prefabricated fluorescent member is a non-planar disk that conforms to and is attached to the inner surface of a concave lens. In this embodiment, the optical properties of the fluorescent member are tested by examining an integrated unit formed by the concave lens and the attached fluorescent member. In both embodiments, the LED package includes a layer of encapsulant material that is deposited between the LED dies and the fluorescent member. In a preferred embodiment, the encapsulant material is an optical grade silicone gel, which has a high thermal stability and a desired refractive index for an efficient light extraction.

Title
Non-incandescent lightbulb package using light emitting diodes
Application Number
9/390006
Publication Number
6504301 (B1)
Application Date
September 3, 1999
Publication Date
January 7, 2003
Inventor
Christopher H Lowery
Fremont
CA, US
Agent
Skjerven Morrill MacPherson
US
Agent
Rachel V Leiterman
US
Brian D Ogonowsky
US
Assignee
LumiLeds Lighting U S
CA, US
IPC
H01J 63/04
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