Abstract:
PROBLEM TO BE SOLVED: To provide a circuit board which can suppress delamination of an insulation layer. SOLUTION: The circuit board 100 comprises a substrate 1, first interconnection layer 2, the insulation layer 3, filling material 4, second interconnection layer 5, and via-hole 6. The first interconnection layer 2 is formed on the substrate 1. The insulation layer 3 is filled with the filling material 4 having a good thermal conductivity, and is so formed as to cover the substrate 1 (or the first interconnection layer 2). The first interconnection layer 2 and the second interconnection layer 5 are electrically insulated from each other by the insulation layer 3. At the bottom of the insulation layer 3, the filling material 4 embedded in the insulation layer 3 on the top face side of the substrate 1 (or the first interconnection layer 2) is exposed and the substrate 1 (or the first interconnection layer 2) is in direct contact with part of the filling material 4. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a metal powder which is used as an electroconductivity-imparting material and enhances an electroconductive effect by a small amount of addition. SOLUTION: The linked metal powder is made from nickel or an alloy thereof, forms one piece of combined particles, has the average diameter of the piece of 30 nm to 200 nm, and has the average length of 0.5 μm to 50 μm. The metal powder preferably has such a relation between an oxygen content therein and a specific surface area by the BET method as to satisfy 0.17≤x/s≤0.83 (wherein x is the oxygen content (wt.%); and s is the specific surface area (m 2 /g)), because such a metal powder acquires superior wettability with a resin and does not lower the electroconductivity. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide coated glass fiber strands having a peculiar coating, inhibiting abrasive wear and breakage of the fiber in treating and having an excellent wet-through, wet-out properties and dispersibility, excellent strength of a laminate eliminating heat-cleaning process prior to lamination process, excellent heat stability, resistance to hydrolysis, corrosion resistance and low reactivity in the presence of reactive acids and alkalis in high humidity and compatibility with polymeric matrix materials, during composite material forming process. SOLUTION: The present invention provides the coated fiber strand comprising a plurality of glass fibers having an average nominal fiber diameter greater than 5 micrometers, the strand being at least partially impregnated with a dried residue of an aqueous sizing composition comprising solid particles which provide interstitial spaces between adjacent glass fibers of the strand, the solid particles having a minimum average particle size of at least 3 micrometers and a hardness which does not exceed a hardness of the plurality of glass fibers. COPYRIGHT: (C)2004,JPO
Abstract:
This conductive paste is such that the printing properties and sintering properties are superior and is formed such that resistance of wiring after sintering is lowered. This conductive paste is characterized by being formed from copper-based metal particles and by an aspect ratio (dmax/dmin), which is defined as the ratio of the maximum diameter (dmax) and minimum diameter (dmin) for the metal particles, being greater than or equal to 1.0 and smaller than 2.2.
Abstract:
PROBLEM TO BE SOLVED: To provide a transparent conductive element easily formed by a printing method.SOLUTION: A transparent conductive element includes: base material which has a surface; and a transparent conductive part and a transparent insulating part which are alternately provided on the surface planarly. The transparent conductive part and the transparent insulating part include a plurality of conductive part elements provided in a first direction and a second direction of the surface of the base material two-dimensionally.