PHOTOSEMICONDUCTOR DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a miniaturized and thin formed photosemiconductor device. SOLUTION: The infrared rays emitted from the first semiconductor chip 13 are reflected on a reflecting surface 16 forming a reflecting film 18 thereon on a trench 17 to be emitted from the side of a resin sealed body 15. Besides, the coming rays into the side of the resin sealed body 15 are reflected on the reflecting surface 16 forming the reflecting film 18 thereon to be received by the second semiconductor chip 14.