Headlamp

Details Headlamp Headlamp

H - Electricity

01

L

H01L 33/02 (2010.01) H01L 33/10 (2010.01) B60Q 1/04 (2006.01) F21S 8/10 (2006.01)

Patent

CA 2525813

An automotive headlamp is equipped with a light source containing one or more light-emitting devices (LEDs) and a base member (a pedestal and rear case) for securing the light source to the automobile. The LED includes: a GaN substrate 1; a n-type Al x Ga1-x N layer 3 on a first main surface side of the GaN substrate 1; a p-type Al x Ga1-x N layer 5 positioned further away from the GaN substrate 1 compared to the n-type Al x Ga1-x N layer 3; and a multi-quantum well 4 positioned between the n-type Al x Ga1-x N layer 3 and the p-type Al x Ga1- x N layer 5. In this LED, the specific resistance of the GaN substrate 1 is no more than 0.5 .OMEGA. cm, the p-type Al x Ga1-x N layer 5 side is down- mounted, and light is discharged from a second main surface 1a, which is the main surface of the GaN substrate 1 opposite from the first main surface.

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