US 6,982,522 B2
LED device including phosphor layers on the reflecting surface
Masatoshi Omoto, Osaka (Japan)
Assigned to Sharp Kabushiki Kaisha, Osaka (Japan)
Filed on Sep. 23, 2003, as Appl. No. 10/667,669.
Claims priority of application No. 2002-293693 (JP), filed on Oct. 07, 2002.
Prior Publication US 2004/0066140 A1, Apr. 08, 2004
Int. Cl. H01L 33/00 (2006.01)
U.S. Cl. 313—502 16 Claims
OG exemplary drawing
 
1. A LED device, comprising:
a base having a recess with the upper surface opened, the inner wall surface of the recess constituting a reflection surface;
a LED chip disposed on the inner bottom of the recess;
a resin filled in the recess, the resin including phosphors which absorb a part of light emitted from the LED chip to convert the wavelength thereof and emit light; and
a phosphor layer formed on the reflection surface, the phosphor layer including the phosphors, wherein the phosphor layer comprises a plurality of phosphor layers each of which is excited to emit a different wavelength of light from each other.