Patent ID: 8004002
Filing Date: 2011-08-23
Classification: H01L

Abstract:
1. A thin-type light emitting diode lamp comprising: a lamp body including an end surface formed with a groove-shaped recess having a thin elongated rectangular opening; a blue light emitting diode chip disposed at a substantial center of an inner bottom surface of the recess of the lamp body; a red light conversion layer covering the blue light emitting diode chip and made of a light-transmitting synthetic resin containing powder of a red fluorescent material which emits red light when excited by blue light emitted from the blue light emitting diode chip; and a green light conversion layer made of a light-transmitting synthetic resin containing powder of a green fluorescent material which emits green light when excited by the blue light; wherein the light emitting diode lamp further comprises a light transmitting layer intervening between the red light conversion layer and the green light conversion layer, the light transmitting layer containing neither the red fluorescent material nor the green fluorescent material or contains the red fluorescent material or the green fluorescent material by an amount smaller than that contained in the red light conversion layer or the green light conversion layer, wherein the red light conversion layer is thicker at portions directly contacting two side surfaces of the blue light emitting diode chip which extend perpendicularly to a longitudinal direction of the recess than at portions directly contacting other two side surfaces of the blue light emitting diode chip which extend in the longitudinal direction of the recess.