Patent ID: 8581110
Filing Date: 2013-11-12
Classification: H01L,H05K

Abstract:
1. A printed circuit board having a mounting region on which an electronic component is to be mounted, comprising: an insulating layer; a conductive trace formed on a first major surface of said insulating layer for transmitting electrical signals, the conductive trace being electrically connected to said electronic component; and a metal layer formed on and facing an oppositely facing second major surface of said insulating layer and having first and second openings, wherein said first and second openings are formed such that a region of said metal layer that coincides with said mounting region is sandwiched between said first and second openings, and formed such that said metal layer is not divided, said mounting region has first and second sides that are parallel to each other, said first opening is arranged on a side of said first side of said mounting region and has a length longer than said first side in a direction parallel to said first side, and said second opening is arranged on a side of said second side of said mounting region and has a length longer than said second side in a direction parallel to said second side.