Patent ID: 7449641
Filing Date: 2008-11-11
Classification: H05K

Abstract:
1. A high-speed signal transmission structure for use on a multi-layer circuit board of the type having at least one upper layer and one bottom layer with at least one upper reference plane formed on the internal side of the upper layer, for providing a high-speed signal transmission path through the multi-layer circuit board; the high-speed signal transmission structure comprising: a first electrically-conductive line, which is laid on a first side of the upper reference plane of the multi-layer circuit board, and which has a first end and a second end; a first via, which has an upper end and a bottom end, wherein the upper end thereof is connected to the first end of the first electrically-conductive line over the upper layer of the multi-layer circuit board, while the bottom end thereof extends to the bottom layer of the multi-layer circuit board; a second electrically-conductive line, which is laid on a second side of the upper reference plane of the multi-layer circuit board in opposition to the first electrically conductive line, and which has a first end and a second end; a second via, which has an upper end and a bottom end, wherein the upper end thereof is connected to the second end of the second electrically-conductive line over the upper layer of the multi-layer circuit board, while the bottom end thereof extends to the bottom layer of the multi-layer circuit board; and a bottom-side connecting bridge, which is laid over the bottom layer of the multi-layer circuit board for connecting the bottom end of the first via to the bottom end of the second via.