A method for treating a substrate having millimeter and/or micrometer and/or nanometer structures. The method includes applying at least one protective material to the structures, wherein the at least one protective material can be dissolved in a solvent, and the structures are produced by an imprinting process.

An apparatus for manufacturing printing circuit boards is provided. The apparatus includes a microcontroller, power supply, two-dimensional stage, laser, and one or more chemical treatment tanks. The apparatus may include a mutlifunctional print module, or multiple independent modules capable of being exchanged, to perform various different processes on a substrate on the same build plate, and may include mechanical means for transporting the substrate during different stages between the build plate, chemical processing chamber(s), and a pressing chamber.

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.

The invention relates to an electronic module (40) comprising at least one printed circuit board of a first type (referred to as printed circuit board A), which is equipped in an overlapping manner with at least one printed circuit board of a second type (referred to as printed circuit hoard B), printed circuit board B being equipped with at least one electronic component with specific requirements (19), mid the interconnected printed circuit boards A and B forming a stepped composite printed circuit board (100, 200, 300, 400, 300). The composite primed circuit board (100, 200, 300, 400, 500) is delimited at least in some regions by end regions (16) which are formed by sections of the at least one printed circuit board A, and the composite printed circuit board (100, 200, 300, 400, 500) is placed on a heat sink (20). A fastening side (15) of the at least one printed circuit board B rests flat on a contact face (21) of the heat sink (20), the contact face (21) of the heat sink (20) being dimensioned and positioned such that at least part of a extends laterally beyond the fastening side (15) of the at least one printed circuit board B in each case towards the end regions (10) formed. Supporting elements (23, 24, 23, 26) are formed on the contact face (21) of the treat sink for the mechanical support of the end regions (16). The invention also relates to a method for producing such an electronic module.

A method for creating a circuit assembly includes printing first conductive traces on a first side of a flexible substrate, printing second conductive traces on a second side of the flexible substrate opposite to the first side, and placing the flexible substrate on a first pallet with the first side facing up. The method includes printing conductive adhesive to form first contact pads on the first side, placing at least one first component onto the first contact pads, and removing the flexible substrate from the first pallet. The method includes placing the flexible substrate on a second pallet with the second side facing up, where the second pallet includes recessed areas or cut outs that align with the at least one first component, printing conductive adhesive to form second contact pads on the second side, and placing at least one second component onto the second contact pads.

A vertical circuit board printer includes a multi-layer conveyor, a printer assembly, and a control system. The multi-layer conveyor includes a number of front conveyors and one rear conveyor. Each upper front conveyor is coupled to a lower front conveyor by a circuit board-lowering mechanism to transport a number of circuit boards in sequence from the number of front conveyors to the rear conveyor. The printer assembly includes a number of printers arranged in sequence above the number of front conveyors. The control system controls operation of the multi-layer conveyor and controls operation of the printing assembly through a software system.

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 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 washing a plurality of PCB units, the method comprising the steps of: receiving a plurality of PCB units, said PCB units arranged with a bump face projecting downwards; washing the bump face of the PCB units, then; flipping the PCB units as to project a ball face downwards, then; washing the ball face.

A method for connecting stacked circuit boards includes: a connecting structure is provided, the connecting structure is a bendable and flexible circuit board; a first circuit board and a plurality of supporting posts are provided, each of the supporting posts is dispersedly fixed to a side surface of the first circuit board; a second circuit board is provided, and two peripheral portions of the connecting structure are respectively fixed to the first circuit board and the second circuit board, the peripheral portions of the connecting structure are respectively near two opposite ends of the connecting structure; the connecting structure is bent to flip the second circuit board super-positioned above the first circuit board, and the second circuit board is connected to a free end of each of the supporting posts.