Patent ID: 7813712

Claim:
An electronic device minimally comprising an antenna section, an information processing means for processing information that is captured by said antenna section, and a metal outer case, which houses therewithin said antenna section and said information processing means, wherein said metal outer case is configured so that said antenna section can receive magnetic flux from outside via said metal outer case and can resonate, said metal outer case minimally comprising a metal case body member and a metal caseback member, and further wherein a joining and fixing portion formed between said metal case body member and said metal caseback member where both of said members being fixedly joined to each other is not provided at least at a location or in the vicinity of said location within a connecting region in which said metal case body member and said metal caseback member are closely attached to each other, and which is opposite to a substantially center part of said antenna section; said antenna section is disposed in the vicinity of the outer periphery of said metal outer case; said joining and fixing portion is not provided in at least one of: (1) an area within said connecting region in that said metal case body member and said metal caseback member are closely attached to each other, and which is formed between lines joining the ends of said antenna section with the center point of said electronic device; (2) an area within said connecting region in that said metal case body member and said metal caseback member are closely attached to each other, and which is formed between lines joining the ends of an antenna coil section of said antenna section with the center point of said electronic device; and (3) an area within said connecting region in that said metal case body member and said metal caseback member are closely attached to each other, and which is formed between interconnection portions formed between a center axis line of said antenna section, which is substantially straight, and said connecting region, and which is closer to said antenna section.