Abstract:
PROBLEM TO BE SOLVED: To provide a method of manufacturing a wiring substrate by which high-density wiring can be formed with high accuracy without using a plated resist. SOLUTION: The method is used to manufacture a wiring substrate by a nonelectrolytic plating method which can precipitate metal without using the plated resist, and it includes a step (a) to form a catalyst layer in a specified pattern on a substrate, a step (b) to form a first metal layer by immersing the substrate in a nonelectrolytic plating liquid to precipitate metal on the catalyst layer, a step (c) to expose the upper surface of the substrate in steam, and a step (d) to form a second metal layer by immersing the substrate in the nonelectrolytic plating liquid to further precipitate metal on the first metal layer. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
A layer of transparent conductive material is disposed on a surface of a substrate. Further layers of conductive material are deposited on the layer of transparent conductive material or on an opposite surface of the substrate. The layers are selectively etched to yield a layout of pads for mounting electrical components and conductive traces forming an electrical circuit.
Abstract:
PROBLEM TO BE SOLVED: To cause an unevenness not to be formed in the passing direction of the electric signal of a wiring, and to increase a surface area in section without changing the distance of the wiring, whereby an insulating board is adhered to a first conductive layer with no clearance to enhance an adhering force. SOLUTION: The wiring board is formed with a first conductive layer 7 and a second conductive layer 9 on an insulating board 1. In the section of a boundary between the first conductive layer 7 and the second conductive layer 9, at least the surface of the first conductive layer 7 is smaller than a side coming into contact with the insulating board 1, and a third conductive layer 11 is formed so as to coat surfaces of the first and second conductive layers. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To reduce warp of a substrate which is caused by curing contraction or the like of an insulating pattern, while the insulating pattern is formed on the substrate so as to be interposed between a semiconductor chip and a conductor pattern. SOLUTION: This substrate is provided with a flexible substrate 11 (insulating film 16) having a chip mounting region for mounting the semiconductor chip on a surface via adhesive agent, a conductor pattern 20 which is formed on the surface of the substrate 11 and electrically connected with the semiconductor chip in a region outside the chip mounting region, and the insulating pattern 21 formed on the surface of the substrate 11 so as to be interposed between the semiconductor chip and the conductor pattern 20. The insulating pattern 21 is partially formed in the chip mounting region. COPYRIGHT: (C)2003,JPO