According to one embodiment, a semiconductor light emitting device includes a semiconductor layer, a first electrode, a second electrode, a first insulating layer, a first interconnect layer, a second interconnect layer, a first metal pillar, a second metal pillar, and a second insulating layer. The allowable temperature difference \u0394Tc not causing dislocation in the seed crystal is determined according to the concentration of the impurities added to the seed crystal and the size of the seed crystal. A plurality of reflection plates are combined with corresponding lamps to constitute independent lamp module cartridges, each of which is removable from one side of the housing. The benchmarking apparatus can be removably coupled to a computer system, for example, through a standard computer interface such as a USB port. A lock bracket on the door with a lock opening to align with a lock opening provided the lever for padlocking the lever closed. The engine restart and vehicle start control apparatus comprises an electromagnetic valve capable of calculating the pump impeller suction torque of the torque converter and setting the oil pressure increase ratio for the oil pressure supplied to the vehicle start clutch.