Abstract:
A resin composite copper foil comprising a copper foil and a resin layer containing a block copolymer polyimide and a maleimide compound, the resin layer being formed on one surface of the copper foil, a production process thereof, a copper-clad laminate using the resin composite copper foil, a production process of a printed wiring board using the copper-clad laminate, and a printed wiring board obtained by the above process.
Abstract:
A high thermal conductivity and low dissipation factor adhesive varnish for (build-up) combining additional insulation layers is disclosed to be used for high-density interconnected printed circuit boards or IC-package substrates and to be formed by well mixing an epoxy resin precursor, a bi-hardener mixture, a catalyst, a flow modifier, an inorganic filler with high thermal conductivity, and a solvent. The epoxy resin precursor is formed by mixing at least two epoxy resins with a certain ratio, where the at least two epoxy resins are selected from a group including a tri-functional epoxy resin, a rubber-modified or Dimmer-acid-modified epoxy resin, a bromide-contained epoxy resin, a halogen-free/phosphorus-contained epoxy resin, a halogen-free/phosphorus-free epoxy resin, a long-chain/halogen-free epoxy resin, and a bisphenol A (BPA) epoxy resin.
Abstract:
Disclosed is a composite material for electrical/electronic component, having a resin coating film formed on at least a part of a metal base, and the residual solvent quantity in the resin coating film being controlled to be 1-30% by mass. The resin coating film is preferably composed of a polyimide or a polyamide-imide.
Abstract:
An embedded chip package process is disclosed. First, a first substrate having a first patterned circuit layer thereon is provided. Then, a first chip is disposed on the first patterned circuit layer and electrically connected to the first patterned circuit layer. A second substrate having a second patterned circuit layer thereon is provided. A second chip is disposed on the second patterned circuit layer and electrically connected to the second patterned circuit layer. Afterwards, a dielectric material layer is formed and covers the first chip and the first patterned circuit layer. Then, a compression process is performed to cover the second substrate over the dielectric material layer so that the second patterned circuit layer and the second chip on the second substrate are embedded into the dielectric material layer.
Abstract:
The invention relates to an adhesion assisting agent-bearing metal foil comprising a layer of an adhesion assisting agent containing an epoxy resin as an indispensable component on a metal, wherein the adhesion assisting agent layer has a thickness of 0.1 to 10 μm. The invention also relates to a printed wiring board being a multilayer wiring board having a plurality of layers, wherein an adhesion assisting agent layer is formed between insulating layers.
Abstract:
An adhesive sheet comprising a base 3 and an adhesive resin layer 4 formed on one side of the base 3, wherein the adhesive resin layer 4 has a glass transition temperature of 170-200° C. and a post-curing elastic modulus of 100-500 MPa.
Abstract:
Provided are a metal layer laminate that includes a roughened metal surface layer having a surface profile capable of strongly adhering to resin materials even when the surface roughness is small, and a simple method for producing a metal layer laminate having good adhesion to resin materials such as a resin substrate for a metal layer and an insulating resin film formed on the surface of a metal wiring portion. The metal layer laminate includes a metal layer, a resin thin film, and a roughened metal surface layer, wherein the resin thin film and the roughened metal surface layer are formed on the surface of the metal layer, a fractal-shaped interface structure appears between the resin thin film and the roughened metal surface layer, when the metal layer laminate is cut in a normal direction, and the interface structure has a fractal dimension of 1.05 to 1.50 as calculated using a box counting method with the measurement object region being set to from 50 nm to 5 μm and the box size (pixel size) being set to 1/100 or less of the measurement object region. The metal layer laminate is obtained by a production method including the steps of forming a resin thin film on the surface of a metal layer and subjecting the resin thin film-carrying metal layer to a plating process.
Abstract:
The invention aims to provide a resin primer which can stick an insulator layer to a conductor foil whereof the surface is not much roughened with sufficient adhesive force, a conductor foil with resin, a laminated sheet and a method of manufacturing same. The resin primer of the invention comprises a resin having film-forming ability and a breaking energy of 0.15 J or more. The conductor foil with resin of the invention comprises a resin layer comprising a conductor foil and the aforesaid resin primer. Further, the laminated sheet of the invention comprises the conductor foil, an insulating layer disposed facing the conductor foil, and a resin layer comprising the aforesaid resin primer disposed between the conductor foil and insulating layer so that it is in contact therewith. This laminated sheet can be manufactured by heating and pressurizing a laminate comprising the aforesaid conductor foil with resin, and a prepreg laminated on this resin layer.
Abstract:
Provided are a method and apparatus for manufacturing a multi-layer substrate. The method includes: rolling out a base substrate that is rolled up into a substrate supply roll and delivering the base substrate to a compression roller system; compressing and laminating a laminating material on the base substrate in a vacuum state using the compression roller system; and cooling the base substrate on which the laminating material is laminated.