Patent ID: 7935972

Claim:
A light emission device, comprising at least two light-emitting semiconductor chips and a substrate, wherein at least one first semiconductor chip ( 12 ) is fitted on the substrate ( 66 ) and a second semiconductor chip ( 14 ) is fitted on the first semiconductor chip ( 12 ), the emission device further including a third semiconductor chip ( 16 ) fitted on the second semiconductor chip ( 14 ), and wherein the second semiconductor chip ( 14 ) leaves free an upwardly facing area of the first semiconductor chip ( 12 ), and wherein at least the left-free area of the first semiconductor chip ( 12 ) and at least one area of the second semiconductor chip ( 14 ) are light-emitting, wherein the semiconductor chips ( 12 , 14 , 16 ) are connected to one another by means of a reflection-free adhesive layer having a thermal conductivity having approximately the same magnitude as the thermal conductivity of the semiconductor chips ( 12 , 14 , 16 ).