First, a router (400) is rotated about a shaft (406) to cause a tip end (402) of the router (400) to move in a vertical direction with respect to a conductive layer (130) while being in contact with the conductive layer (130). In this way, the router (400) is inserted into the conductive layer (130) to form an opening in the conductive layer (130). Next, the router (400) is rotated about the shaft (406) to cause a side surface (404) of the router (400) to move in a horizontal direction with respect to the conductive layer (130) while being contact with the conductive layer (130). In this way, the conductive layer (130) is formed into a conductive pattern (132).

The present invention provides a high speed signal fan-out method for BGA and a PCB using the same. The method comprises: providing a printed circuit board (PCB), providing a plurality of vias and signal traces of the vias on the PCB; and providing back-drilled holes for routing of other signal traces at positions corresponding to the vias. The vias are arranged into a plurality of straight lines from an edge to the center of the PCB. The plurality of straight lines each is horizontal or vertical. The signal traces of the vias in a straight line are arranged from high to low or from low to high with respect to routing positions of the vias, and the back-drilled holes of the plurality of vias are arranged in descending or ascending order corresponding to the depths of the back-drilled holes.

Disclosed is a clinch mechanism for assembling a printed circuit board with electronic components that includes a drive shaft configured to move along a vertical axis, a stationary anvil configured to remain stationary during movement of the drive shaft, a cutter having a cutting tip, and a toggle configured to rotate about a toggle rotation axis that includes an involute gear shaped tooth configured to roll across an involute trapezoidal slot of the cutter in order to impart movement on the cutter relative to the stationary anvil. Movement of the drive shaft along the linear axis is configured to move the cutter relative to the stationary anvil, and to move the cutting tip across the stationary anvil to cut an electronic lead located between the cutting tip and the stationary anvil, and to rotate the toggle about the axis.

The present disclosure describes expansion card interfaces for a printed circuit board and methods of making the same. The methods include forming electrical pads of the expansion card interface on a substrate, and dividing at least one electrical pad into a first portion and a second portion. The resulting expansion card interfaces have the first portion conductively coupled to a circuit on the printed circuit board, and the second portion conductively isolated from the first portion.

A method for milling flex foil includes providing a web of flex foil including a substrate; a first conductive layer arranged on one surface of the substrate; a second conductive layer arranged on an opposite surface of the substrate; a first insulating layer arranged adjacent to the first conductive layer; and a second insulating layer arranged adjacent to the second conductive layer. The method includes dry milling one side of the web using a first clich pattern including raised portions and non-raised portions to selectively remove at least one of the first conductive layer and the first insulating layer. The method includes dry milling an opposite side of the web using a second clich pattern including upper raised portions, lower raised portions and non-raised portions to selectively remove the second insulating layer.

A board element for board-to-board interconnect formation is provided. An embodiment includes embedding a signal via element in the board element and cutting through respective sections of the board element and the signal via element to expose a new board element edge and an outwardly facing surface of the signal via element.

A method for milling flex foil includes providing a web of flex foil including a substrate; a first conductive layer arranged on one surface of the substrate; a second conductive layer arranged on an opposite surface of the substrate; a first insulating layer arranged adjacent to the first conductive layer; and a second insulating layer arranged adjacent to the second conductive layer. The method includes dry milling one side of the web using a first clich pattern including raised portions and non-raised portions to selectively remove at least one of the first conductive layer and the first insulating layer. The method includes dry milling an opposite side of the web using a second clich pattern including upper raised portions, lower raised portions and non-raised portions to selectively remove the second insulating layer.

A method for printing electrically conductive traces on a non-conductive material includes: printing a conductive material onto a non-conductive material by transferring ultrasonic energy to the conductive material; forming non-conductive resin on the non-conductive material on which the conductive material has been printed, using a three-dimensional printer head, the non-conductive resin being (or serving as) an insulation component, or placing a prepreg on the non-conductive material on which the conductive material has been printed; and forming a connecting portion or via hole in the non-conductive resin or the prepreg.

A method for manufacturing a double-sided, single conductor laminate includes providing a laminated substrate that includes a conductive layer, an adhesive layer and a support layer; dry milling a trace pattern in the laminated substrate by removing selected areas of the conductive layer and the adhesive layer; and attaching a first cover layer using a first adhesive layer to the conductive layer. The first cover layer includes one or more precut access holes that align with one or more traces of the trace pattern.

The invention relates to an electrically conductive film (10) having an electrically nonconductive substrate layer (12), and an electrically conductive metal layer (14) that has a structure produced by material removal and that on a first side is joined, at least in sections, to the substrate layer (12).