Patent ID: 7847307

Claim:
A light-emitting module accommodating a base board with a semiconductor multi-layered film mounted in a package wherein the semiconductor multi-layered film includes a light-emitting layer, the package includes a base and a cap connected to the base, the base is made of a metallic support portion having a concave portion, the metallic support portion has a plurality of through-holes on a side surface of the concave portion, terminal portions are inserted in the through-holes via glass that is an electrically insulating member, the semiconductor multi-layered film is electrically connected to the terminal portions via wires, the base board is supported on a bottom section of the concave portion, a face of the bottom section of the concave portion on a side where the base board is mounted and a face on an opposite side thereof are planes, the cap includes a glass window portion and a frame portion provided on an outer circumference of the glass window portion, the metallic support portion and the frame portion have a thermal expansion coefficient of 5×10 −6 /° C. to 1×10 −5 /° C., a difference in thermal expansion coefficient between the glass window portion and the frame portion is 1×10 −6 ° C. or less, projections to be subjected to seam welding to each other are provided at an outer circumferential portion of an upper part of the concave portion and an outer circumferential portion of the frame portion.