Patent ID: 9000474
Filing Date: 2015-04-07
Classification: H01L,H05K,Y10T

Abstract:
1. A wiring substrate comprising: a heat sink; a first insulating layer on the heat sink; a plurality of wiring patterns on a first surface of the first insulating layer, wherein the wiring patterns are configured to mount light emitting elements thereon, and each wiring pattern includes; a second insulating layer on the first insulating layer such that the wiring patterns are exposed from the second insulating layer, wherein a surface of the second insulating layer which is opposite to another surface of the second insulating layer with which the first surface of the first insulating layer is in contact is lower than the first surfaces of the wiring patterns, and the second insulating layer covers at least a portion of the side surfaces of the wiring patterns; and a first reflective layer on the second insulating layer, wherein the first reflective layer covers another portion of the side surfaces of the wiring patterns and the surface of the second insulating layer which is opposite to said another surface of the second insulating layer.