Electronic device and method for manufacturing same

An electronic device in which an electronic component is mounted through a conductive bonding layer, the electronic device comprising:

• a support member that includes
• a metallic placement surface joined to the conductive bonding layer, and
• a metallic sealing surface provided on an outer side of the placement surface in an in-plane direction of the placement surface to adjoin the placement surface and to surround the placement surface;
• and
• a resin member, which is a synthetic resin molded article, joined to the metallic sealing surface and covering the electronic component, wherein:
• the metallic sealing surface includes a rough surface having a plurality of laser irradiation marks having a substantially circular shape;
• and
• a boundary area, which is a portion of the placement surface adjoining the metallic sealing surface in the in-plane direction, has a surface which is ablated by post-processing laser irradiation, the surface of the boundary area has greater flatness than a surface of the metallic sealing surface which is not ablated by post-processing laser irradiation, such that the boundary area has an improved wettability for a material providing the conductive bonding layer than the rough surface of the metallic sealing surface, and
• the boundary area which is adjacent to the laser irradiation marks is less flat than an other portion of the placement surface, such that the boundary area has an improved adhesion for the material providing the conductive bonding layer other than the other portion of the placement surface.