Abstract:
A method for fabricating a solder pad structure. A circuit board having thereon at least one copper pad is provided. A solder resist is formed on the circuit board and covers the copper pad. A solder resist opening, which exposes a portion of the copper pad, is formed in the solder resist by laser. The laser also creates a laser activated layer on sidewalls of the solder resist opening. A chemical copper layer is then grown from the exposed copper pad and concurrently from the laser activated layer.
Abstract:
A disclosed substrate is composed of a base member having a through-hole, a penetrating via provided in the through-hole, and a wiring connected to the penetrating via. The penetrating via includes a penetrating part having two ends on both sides of the base member, which is provided in the through-hole, a first protrusion protruding from the base member, which is formed on a first end of the penetrating part so as to be connected to the wiring, and a second protrusion protruding from the base member, which is formed on a second end of the penetrating part. The first protrusion and second protrusion are wider than a diameter of the through-hole.
Abstract:
A photosensitive resin composition and a method for the formation of a resin pattern using the photosensitive resin composition are provided. The photosensitive resin composition contains, as a catalyst precursor, a catalytic metal element with a metal-deposition catalytic activity suitable for electroless metal plating. The method for the formation of a resin pattern uses a photosensitive resin composition, which contains, as a catalyst precursor, a catalytic metal element with a metal-deposition catalytic activity suitable for electroless metal plating. By using the method of this invention, it is possible to form a conductive film selectively on a resin pattern formed through exposure and development of the photosensitive resin composition of this invention.
Abstract:
The present invention provides a metal film formed by applying an electroless plating catalyst or its precursor to a polymer layer on a base plate having a surface roughness of 500 nm or less and then carrying out electroless plating, the polymer layer containing a polymer which has a functional group capable of interacting with the electroless plating catalyst or its precursor and is chemically bonded directly to the base plate, wherein the adhesion strength between the base plate and the metal film is 0.2 kN/m or more.
Abstract:
A semiconductor sensor component including a housing with a cavity and a sensor chip and a method for producing the same are described herein. The housing includes an opening to the surroundings of the housing and the sensor chip includes a sensor region which faces the opening. The sensor chip is embedded in the cavity of the housing into a rubber-elastic layer with its rear side and its edge sides, where the rubber-elastic layer includes cleavable included organometallic or inorganic metallic complexes. The metals of the complexes lie in a freely accessible manner on the top side of the rubber-elastic layer and form metallic nuclei for wiring lines which electrically connect the sensor region of the sensor chip to contact pads in the cavity of the cavity housing.
Abstract:
A method for making an integrated circuit substrate having embedded passive components provides a reduced cost and compact package for a die and one or more passive components. An insulating layer of the substrate is embossed or laser-ablated to generate apertures for insertion of a paste forming the body of the passive component. A resistive paste is used to form resistors and a dielectric paste is used for forming capacitors. A capacitor plate may be deposited at a bottom of the aperture by using a doped substrate material and activating only the bottom wall of the aperture, enabling plating of the bottom wall without depositing conductive material on the side walls of the aperture. Vias may be formed to the bottom plate by using a disjoint structure and conductive paste technology. Connection to the passive components may be made by conductive paste-filled channels forming conductive patterns on the substrate.
Abstract:
An insulating layer (5) and a conductive seed layer (6) are applied to a substrate (1) in a simple process. A photo resist with palladium chloride are provided in a bath for electrophoretic deposition onto the substrate. The photo resist is an insulator and the palladium chloride is a catalyst. The layer is heated with UV to cure it. The layer is plasma etched to expose more of the palladium chloride, which acts as a catalyst for electrodes plating of the conductive seed layer. A thicker conductive layer (7) is then electroplated onto the seed layer. These steps may be repeated for successive insulating and/or conductive layers.
Abstract:
The method of manufacturing a wiring substrate comprises the steps of: performing a pattern exposure of a resin layer containing photocatalyst particles, in a shape of a desired wiring pattern so that the photocatalyst particles are exposed at a surface of the resin layer; performing irradiation of radiation to the resin layer having the exposed photocatalyst particles while the resin layer having the exposed photocatalyst particles is immersed in an aqueous solution of a metallic salt so that a photochemical reduction and precipitating of a metal film onto the exposed photocatalyst particles are performed; and forming a conducting layer on the metal film.
Abstract:
A Gas bag module for use in a vehicle occupant restraint device has a plastic generator support. On the generator support a printed circuit is formed by metal deposition. For activating an electrical function element, the printed circuit cooperates with a switching element that is arranged on a section of the generator support.
Abstract:
Disclosed is a method of forming, on the surface of a substrate, a first layer which is suitable for activating a second solid-layer-forming chemical reaction thereon, the method comprising the steps of bringing into contact with the substrate a first liquid which forms a first solid layer thereon, the first liquid comprising an activator for the second solid-layer-forming chemical reaction, characterised in that the first liquid is selected so that the first solid layer adheres to the substrate and is permeable to a second liquid that comprises one or more reagents for the second solid-layer-forming chemical reaction. A second solid layer can then be formed on the substrate by bringing into contact with the first solid layer a second liquid comprising one or more reagents for the second solid-layer-forming reaction.