Abstract:
A lamination process and structure of a high layout density substrate is disclosed. The lamination process comprises the following steps. First of all, a plurality of laminating layers are individually formed, wherein each laminating layer has a first dielectric layer, a plurality of first vias and a patterned conducting layer. Next, a bottom layer having a second dielectric layer and a plurality of second vias is formed. Then, the laminating layers and the bottom layer are stacked. Finally, the laminating layers and the bottom layer are laminated simultaneously to form a multiplayer substrate at one time.
Abstract:
A method for making multi-layer electronic circuit boards 64 having “blind” type apertures 28, 30 which may be selectively and electrically grounded and further having selectively formed air bridges and/or crossover circuits 45, 46.
Abstract:
A method 10, 90 for making a multi-layer electronic circuit board 82, 168 including the steps of forming at least one protuberance 15, 100 upon an electrically conductive member 12, 92 and adding additional electrically conductive layers of material 34, 56, 58, 104, 114, 138, 140 to the member 12, 92 while selectively extending the protuberance 15, 100 within the layers 82, 168, thereby forming a circuit board 82, 168. A portion of the formed circuit board may be etched in order to selectively create air-bridges 86 or interconnection portions 164.
Abstract:
A method for making a multi-layer circuit board 116 having apertures 96, 98 which may be selectively and electrically isolated from electrically grounded member 46 and further having selectively formed air bridges and/or crossover members 104 which are structurally supported by material 112. Each of the apertures 96, 98 selectively receives electrically conductive material 114.
Abstract:
A method 10 for making a multi-layer circuit board 70 having at least one electrically conductive interconnection portion or “via” 72 which extends within the board 70 and at least one air-bridge 74. The method 10 includes the steps of forming protuberances 13 upon a core member 12, attaching pre-circuit assemblies 32, 34 to the core member 12, thereby forming the circuit board 70 while concomitantly and selectively extending at least one of the protuberances 13 within the formed circuit board 70.
Abstract:
A method 10 for making multi-layer electronic circuit boards having metallized apertures 34, 36 which may be selectively and electrically grounded or isolated from an electrical ground plane.
Abstract:
A method for constructing an illuminating and reflecting apparatus is provided. The method comprises the steps of providing a layered metal substrate with an aluminum layer between a first and a second layer of copper and removing a defined area of one of the layers of copper to form a reflective portion. A localized light source is positioned to allow light to reflect off of the reflective portion.
Abstract:
A multi-layer circuit board with heat pipes and a method for forming a multi-layer circuit board with heat pipes is disclosed. The method includes forming channels in a first and second pre-circuit assembly and attaching the first pre-circuit assembly to the second pre-circuit assembly such that the channels cooperatively form a heat pipe.
Abstract:
A method for making multi-layer electronic circuit boards 64 having nullblindnull type apertures 28, 30 which may be selectively and electrically grounded and further having selectively formed air bridges and/or crossover circuits 45, 46.
Abstract:
A method for forming sets of tri-metal material involving the use of cladding mills. When multiple sets of tri-metal material are formed, the outside surfaces of each set is prepared by oxidation to prevent each set from adhering to the set above or below. An alternative to oxidation is to provide a removable layer on the outside surface of the tri-metal material. Alternatively bonding materials may be used on the intermediate surfaces; such bonding materials can be selected from a group consisting of tin, nickel, titanium, chromium, silver and zinc.