Abstract:
A method for forming a wire bonding substrate is disclosed. A substrate comprising a first surface and a second surface is provided. A through hole is formed in the substrate. A conductive layer is formed on the first surface and the second surface of the substrate and covers a sidewall of the through hole. The conductive layer on the first surface of the substrate is patterned to form at least a first conductive pad, and the conductive layer on the second surface of the substrate is patterned to form at least a second conductive pad. An insulating layer is formed on the first surface and the second surface of the substrate and covers the first conductive pad and the second conductive pad. The insulating layer is recessed until top surfaces of the first conductive pad and the second conductive pad are exposed. A first metal layer is electroplated on the first conductive pad by applying current from the second conductive pad to the first conductive pad through the conductive layer passing the through hole.
Abstract:
A membrane electrode module is provided. The membrane electrode module includes a membrane electrode assembly, a first fixing element and a second fixing element. The membrane electrode assembly includes an exchange-membrane, a first electrode and a second electrode. The exchange-membrane includes a first surface and a second surface. The first electrode is disposed on the first surface. The second electrode is disposed on the second surface. The first fixing element contacts the first surface. The second fixing element contacts the second surface, wherein the first fixing element and the second fixing element are joined to the exchange-membrane via heat-pressing to be fixed to the exchange-membrane.
Abstract:
A pin for a semiconductor device is disclosed. A connection head includes a plurality of curved protruded ribs and a plurality of recessed grooves. The curved protruded ribs and recessed grooves are alternately arranged. The curved protruded ribs radially extend from the center of the connection head. A pin stem is connected to the connection head.
Abstract:
The invention provides a printed circuit board and method for fabricating the same. The printed circuit board includes a substrate having an internal circuit structure. An additional circuit structure is disposed on the substrate, electrically connected to the internal circuit structure. A solder mask insulating layer having an opening is disposed on the additional circuit structure. A conductive bump pattern is disposed in the solder mask insulating layer, wherein the conductive bump pattern extends into the opening horizontally, wherein a side, a portion of an upper surface and a portion of a lower surface of the conductive bump pattern are exposed from the opening. A solder ball is formed in the opening, wherein the solder ball is electrically connected to the additional circuit structure.
Abstract:
The invention provides a printed circuit board and a method for fabricating the same. The printed circuit board includes a core substrate having a first surface and an opposite second surface. A first through hole and a second through hole are formed through a portion of the core substrate, respectively from the first surface and second surfaces, wherein the first and second through holes are laminated vertically and connect to each other. A first guide rail and a second guide rail are, respectively, formed through a portion of the core substrate and connected to the second through hole, so that a fluid flows sequentially from an outside of the printed circuit board through the first guide rail, the second through hole and the second guide rail, to the outside of the printed circuit board.
Abstract:
The invention provides a high density package substrate and a method for fabricating the same. A double-sided copper clad laminate containing an upper copper foil and a lower copper foil is provided. A bottom pad is disposed on the lower copper foil, aligned to a predetermined position of a through hole. The through hole is formed by laser drilling through the upper copper foil and the substrate, but not through the bottom pad. A seed layer is formed conformally lining the through hole, and a metal layer is formed on the seed layer by plating to form a plated through hole (PTH).
Abstract:
A cutting mold for removing two opposite superfluous rigid circuit boards from a rigid-flexible circuit board. A first cutter is connected to a first moldboard. A first barricade is connected to the first moldboard. The maximum vertical distance from the first barricade to the first moldboard exceeds that from the first cutter to the first moldboard. A second moldboard is opposite the first moldboard. The first and second moldboards move with respect to each other. A second cutter is connected to the second moldboard and corresponds to the first cutter. A second barricade is connected to the second moldboard and detachably abuts the first barricade. The maximum vertical distance from the second barricade to the second moldboard exceeds that from the second cutter to the second moldboard. The first and second cutters cut the superfluous rigid circuit boards when the first and second moldboards move toward each other.
Abstract:
A fuel cell system and a method for checking for hydrogen leakage are provided. The fuel cell system includes a fuel cell module having at least one fuel cell. The fuel cell system further includes a valve coupled to the fuel cell module and a hydrogen source for allowing hydrogen to be passed to the fuel cell module or blocking hydrogen from being passed to the fuel cell module. The fuel cell system further includes a controller board coupled to the valve and the fuel cell module for checking output voltage of the at least one fuel cell to determine whether there is hydrogen leak. The control board controls the valve for blocking hydrogen from being passed to the fuel cell module when the control board determines that there is a hydrogen leak.
Abstract:
The invention provides a high density package substrate and a method for fabricating the same. A double-sided copper clad laminate containing an upper copper foil and a lower copper foil is provided. A bottom pad is disposed on the lower copper foil, aligned to a predetermined position of a through hole. The through hole is formed by laser drilling through the upper copper foil and the substrate, but not through the bottom pad. A seed layer is formed conformally lining the through hole, and a metal layer is formed on the seed layer by plating to form a plated through hole (PTH).
Abstract:
A method for forming a wire bonding substrate is disclosed. A substrate comprising a first surface and a second surface is provided. A through hole is formed in the substrate. A conductive layer is formed on the first surface and the second surface of the substrate and covers a sidewall of the through hole. The conductive layer on the first surface of the substrate is patterned to form at least a first conductive pad, and the conductive layer on the second surface of the substrate is patterned to form at least a second conductive pad. An insulating layer is formed on the first surface and the second surface of the substrate and covers the first conductive pad and the second conductive pad. The insulating layer is recessed until top surfaces of the first conductive pad and the second conductive pad are exposed. A first metal layer is electroplated on the first conductive pad by applying current from the second conductive pad to the first conductive pad through the conductive layer passing the through hole.