05813753 is referenced by 550 patents and cites 8 patents.

A light emitting device for use in lighting and/or display applications includes a UV/blue LED located in a depression having reflecting sidewalls, a light transmitting material surrounding the LED and filling the depression, and a phosphor in the form of particles either dispersed in the light transmitting material or adhered to the surface of the LED. The sidewalls reflect UV as well as visible light, thus enhancing the efficiency of the device. Optical filters located on the top of the LED and/or the bottom of a UV absorbing glass plate covering the depression further enhance efficiency and/or spectral characteristics of the emitted light.

Title
UV/blue led-phosphor device with efficient conversion of UV/blues light to visible light
Application Number
8/863987
Publication Number
5813753
Application Date
May 27, 1997
Publication Date
September 29, 1998
Inventor
Cornelis Ronda
Aachen
DE
Gerard Acket
Eindhoven
NL
Leendert Vriens
Eindhoven
NL
Agent
John C Fox
Assignee
Philips Electronics North America Corporation
NY, US
IPC
H01L 33/00
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