Patent ID: 9693456
Date: 2017-06-27
CPC Classifications: H05K

Claim:
1. A substrate comprising: an insulating substrate including a first surface and a second surface; and a metal layer that is adhered to the first surface and made of a metal plate, wherein the insulating substrate includes a through hole, the metal layer includes a bent portion, which is inserted into the through hole and protrudes in a direction extending from the first surface to the second surface, and a periphery portion, which is located around the bent portion and adhered to the first surface, the bent portion includes a first end and a second end that are located on opposite sides, the bent portion is bent from the periphery portion at the first end and the second end, the periphery portion is divided into a first periphery portion, which is continuous with the first end of the bent portion, and a second periphery portion, which is continuous with the second end of the bent portion the first periphery portion includes a first side portion that is continuous with the first end of the bent portion, the second periphery portion includes a second side portion that is continuous with the second end of the bent portion, the first and second side portions are located on opposite sides of the bent portion, the first periphery portion and the second periphery portion each include an extension portion that extends continuously from a corresponding one of the side portions, and the extension portions extend toward each other, the metal layer further includes a cut arranged between the bent portion and the extension portion, and a gap that separates the first periphery portion from the second periphery portion is formed between a distal end portion of the extension portion in the first periphery portion and a distal end portion of the extension portion in the second periphery portion.