Abstract:
A ceramic multilayer substrate is provided with a ceramic laminate (10) including a plurality of ceramic layers laminated, having a first main surface (18), and including internal circuit elements disposed in the inside; a resin layer (15) having a bonding surface (19) in contact with the first main surface (18) of the above-described ceramic laminate (10) and a mounting surface (16) opposite to the above-described bonding surface (19); external electrodes (17), each disposed on the mounting surface (16) of the above-described resin layer (15) and electrically connected to at least one of the internal circuit elements (14) of the above-described ceramic laminate (10); and a ground electrode (12), a dummy electrode, or capacitor-forming electrodes disposed at an interface between the first main surface (18) of the above-described ceramic laminate (10) and the bonding surface (19) of the above-described resin layer (15) or in the inside of the above-described resin layer (15).
Abstract:
Dargestellt und beschrieben ist eine Leiterplatte (1) mit einem Basismaterial (2) aus Isolierstoff als Träger von Leiterbahnen (3), wobei die fertigen Leiterbahnen (3) eine Dicke von mindestens 100 µm aufweisen, sowie ein Verfahren zur Herstellung einer derartigen Leiterplatte (1). Mit dem erfindungsgemäßen Verfahren kann eine Leiterplatte (1) durch folgende Schritte sehr einfach und zuverlässig hergestellt werden:
Strukturieren der Leiterfolienschicht zur Erzeugung der Leiterbahnen (3), Verpressen mit einem isolierenden Füllmaterials (8), so daß sowohl die Kanäle (4) zwischen den Leiterbahnen (3) mit dem Füllmaterial (8) vollständig gefüllt als auch die Oberfläche (9) der Leiterbahnen (3) von dem Füllmaterial (8) bedeckt sind und Anbinden der im Inneren der Leiterplatte (1) angeordneten Leiterbahnen (3) an Anschlußflächen (11) auf der Oberfläche der Leiterplatte (1) durch Bohren und Metallisieren von Löchern (10).
Abstract:
A printed-wiring board has a copper foil (the first conductive layer) providing electric conductivity formed on one or both sides of an insulating board providing electrical insulation, an insulating layer providing electrical insulation formed at specific sites (where there are through-holes) on the first conductive layer, and a second conductive layer providing electric conductivity formed on the insulating layer. In this printed-wiring board, when the second conductive layer is formed, deposition of an electrically conductive material by plating, and polishing of the deposited electrically conductive material, these steps are repeated at least once, so that the surface of the second conductive layer can be smoothened to enhance the bonding stability of chip parts.
Abstract:
The invention concerns a method for mounting electronic components and a related flexible printed circuit board. This board is constituted with a first insulation film (1) covering a first insulating resist layer (3), a second insulation film (7) covering a second insulating resist layer (6) and a printed circuit (4) formed between the first insulating resist layer (3) and the second insulating resist layer (6), and a terminal (5a) of an electronic component (5) is disposed on the printed circuit (4), and the second insulation film (7) is pressed and heated.
Abstract:
Dehnbare Elektrodenleiteranordnung für ein medizinisches Implantat, die mindestens einen zickzack- oder mäanderförmigen Leiterzug auf einem isolierenden Träger und mit einer isolierenden, mit dem Träger unter Einbettung des Leiterzuges dicht verbundenen Abdeckung aufweist, wobei der Träger ein im Wesentlichen nicht dehnbares Material aufweist und in Anpassung an die Kontur des Leiterzuges oder der Leiterzüge zickzack- oder mäanderförmig zugeschnitten ist.
Abstract:
In a method for fixing an electronic component (3) on a printed circuit board (2), and contact-connecting the electronic component (3) to the printed circuit board (2), the following steps are provided: - providing the printed circuit board (2) having a plurality of contact and connection pads (8), - providing the electronic component (3) having a number of contact and connection locations (5) corresponding to the plurality of contact and connection pads (8) of the printed circuit board (2), with a mutual spacing reduced in comparison with the spacing of the contact and connection pads (8) of the printed circuit board (2), and – arranging or forming at least one interlayer (4) for routing the contact and connection locations (5) of the electronic component (3) between the contact and connection pads (8) of the printed circuit board (2) and the contact and connection locations (5) of the electronic component (3). A method for producing an interlayer (4) for routing and a system having a printed circuit board (2) and an electronic component (3) using the interlayer (4) for routing are also provided.
Abstract:
A wiring substrate is provided with a substrate, a conductive circuit formed on a surface of the substrate, and an insulating layer which covers the conductive circuit. In a fitting portion of the wiring substrate, the insulating layer is formed with an opening portion through which a portion of the conductive circuit is exposed or displayed as an exposed surface. On the exposed surface of the conductive circuit, an electrode layer is formed which is made of a conductive member. A bottom surface of the electrode layer is connected to the conductive circuit. An upper surface of the electrode layer is extended in the widthwise direction W of wirings of the conductive circuit so as to cover even a part of the insulating layer.
Abstract:
A substrate (10) with first metallic contact pads (13a..13d) is disclosed, which first contact pads (13a..13d) and second contact pads (23a..23d) on a second substrate (20) are to be soldered together. According to the invention, the greatest planar extension (Din) of said first contact pads (13a..13d) with respect to said first surface does not exceed 20 µm. Thus, a stand off Xin of zero or almost zero can be achieved when the first substrate (10) and the second substrate (20) are soldered together. This method for instance is applicable to the flip chip technology, wherein preferably "underbump metallization", UBM for short, and "Immersion solder bumping", ISB for short, are used for manufacturing said substrate (10).