摘要:
A method of making a circuitized substrate in which the substrate's commoning bar, used during the plating of the circuitry on the substrate, is terminated from the various conductors using a laser. In a preferred embodiment, the laser acts through a dielectric layer (soldermask) which is applied over the circuitry, including the commoning bar and connected parts. The laser may also be used to expose selected ones of the circuit's other parts, including various pads used to accommodate a wirebond (from a chip) and also solder balls for eventual placement of the substrate on a larger circuit board.
摘要:
A method of making a circuitized substrate in which the substrate's commoning bar, used during the plating of the circuitry on the substrate, is terminated from the various conductors using a laser. In a preferred embodiment, the laser acts through a dielectric layer (soldermask) which is applied over the circuitry, including the commoning bar and connected parts. The laser may also be used to expose selected ones of the circuit's other parts, including various pads used to accommodate a wirebond (from a chip) and also solder balls for eventual placement of the substrate on a larger circuit board.
摘要:
A method of making a circuitized substrate in which a commoning bar, used during the plating of the circuitry on the substrate and coupled to a second set of conductors which in turn are coupled to a first set of conductors, is terminated from the second set of conductors.
摘要:
A method of making a circuitized substrate in which the substrate's commoning bar, used during the plating of the circuitry on the substrate, is terminated from the various conductors using a laser. In a preferred embodiment, the laser acts through a dielectric layer (soldermask) which is applied over the circuitry, including the commoning bar and connected parts. The laser may also be used to expose selected ones of the circuit's other parts, including various pads used to accommodate a wirebond (from a chip) and also solder balls for eventual placement of the substrate on a larger circuit board.
摘要:
A method of making a circuitized substrate in which the substrate's commoning bar, used during the plating of the circuitry on the substrate, is terminated from the various conductors using a laser. In a preferred embodiment, the laser acts through a dielectric layer (soldermask) which is applied over the circuitry, including the commoning bar and connected parts. The laser may also be used to expose selected ones of the circuit's other parts, including various pads used to accommodate a wirebond (from a chip) and also solder balls for eventual placement of the substrate on a larger circuit board.
摘要:
A method of making a circuitized substrate in which a commoning bar, used during the plating of the circuitry on the substrate and coupled to a second set of conductors which in turn are coupled to a first set of conductors, is terminated from the second set of conductors.
摘要:
A method of treating a conductive layer to assure enhanced adhesion of the layer to selected dielectric layers used to form a circuitized substrate. The conductive layer includes at least one surface with the appropriate roughness to enable such adhesion and also good signal passage if the layer is used as a signal layer. The method is extendible to the formation of such substrates, including to the formation of multilayered substrates having many conductive and dielectric layers. Such substrates may include one or more electrical components (e.g., semiconductor chips) mounted thereon and may also be mounted themselves onto other substrates.
摘要:
A circuitized substrate with a conductive layer which assures enhanced adhesion of the layer to selected dielectric layers used to form the circuitized substrate. The conductive layer includes at least one surface with the appropriate roughness to enable such adhesion and also good signal passage if the layer is used as a signal layer.
摘要:
A method of treating a conductive layer to assure enhanced adhesion of the layer to selected dielectric layers used to form a circuitized substrate. The conductive layer includes at least one surface with the appropriate roughness to enable such adhesion and also good signal passage if the layer is used as a signal layer. The method is extendible to the formation of such substrates, including to the formation of multilayered substrates having many conductive and dielectric layers. Such substrates may include one or more electrical components (e.g., semiconductor chips) mounted thereon and may also be mounted themselves onto other substrates.