Abstract: A method for manufacturing a semiconductor device having a edge termination region comprises a stacking process, an ion implantation process, and a heat treatment process. In the stacking process, a p-type semiconductor layer containing a p-type impurity is stacked on an n-type semiconductor layer containing an n-type impurity. In the ion implantation process, at least one of the n-type impurity and the p-type impurity is ion-implanted into the p-type semiconductor layer located in the edge termination region. The ion implantation process and the heat treatment process are performed such that the p-type impurity of the p-type semiconductor layer is diffused into the n-type semiconductor layer to form a p-type impurity containing region in at least part of the n-type semiconductor layer and below a region of the p-type semiconductor layer into which the ion implantation has been performed.

Abstract: The degree of freedom in design is increased while maintaining strength by enabling a decorative member to be disposed without thinning a wheel main body. A wheel is made up of a wheel main body 1 which is made up of a rim portion 10 and a disc portion 11 and which has a vent hole 141 in the disc portion 11 and a decorative member 2 made from a resin which is held in at least the disc portion 11 and is observed from the vent hole 141. Since the decorative member 2 is observed in the vent hole 141, the wheel main body 1 including spoke portions 14 does not have to be thinned. In addition, since the design of the decorative member is observed in cooperation with the design of the disc portion 11, the degree of freedom in design is increased.

Abstract: The present invention intends to provide an air bag door construction in which the air bag develops smoothly and securely, the skin can be easily produced with small man-hour, and which is excellent in the surface appearance. The skin 50 is formed by a mold 5 including an endless and annular wall 50 provided at a part of a molding surface to be inclined relative to the molding surface. A groove portion 35 of the skin 3 formed by the wall 50 is cut at a bottom portion thereof to separate the skin 3 into a general portion 30 and a door portion 31. The general portion 30 and the door portion 31 are relatively shifted to make both surfaces thereof flush with each other. When the surfaces of the general portion 30 and the door portion 31 are flush by the relative shift, gap between the general portion 30 and the door portion 31 can be narrowed, and gap appeared on the surface can also be narrowed.

Abstract: A steering wheel having an impact energy absorbing member capable of absorbing a predetermined amount of impact energy while being attached in a predetermined position to the steering wheel through its upper portion. The steering wheel includes a boss assembly provided at the center of the steering wheel and including a metallic core. The impact energy absorbing member which is disposed above the metallic core and which is capable of deforming by being reduced in size generally in the axial direction of a steering shaft when it receives an impact force applied in the axial direction, and a pad disposed over the impact energy absorbing member to cover the same. The impact energy absorbing member has attachment extensions projecting outward from its upper peripheral portion generally parallel to its central portion. An attachment hole is formed in each attachment extension to enable the impact energy absorbing member to be fixed to the steering wheel with a screw.