Abstract:
Coupling components to an underlying substrate using a composition of a polymer and magnetic material particles. Upon applying the composition between the component and the printed circuit board, the composition may be subjected to a magnetic field to align the magnetic material particles into a conductive path between the component and the underlying substrate. At the same time the polymer-based material may be cured or otherwise solidified to affix the conductive path formed by the magnetic material particles.
Abstract:
A circuit board or microelectronic device in which conductive signal lines are suspended or supported by filaments in air, rather than surrounded by a solid dielectric material. Dry air has a low relative permittivity and extremely low loss tangent compared with common dielectric substrates in which signal lines are currently embedded within circuit boards and microelectronic devices. The signal intensity attenuation for filament-suspended or filament-supported signal lines is much lower than signal lines embedded in solid dielectric materials, allowing for transmission of significantly higher frequency signals within filament-suspended and filament-supported signal lines.
Abstract:
A resin composition for printed circuit board comprising:(A) 30-90% by weight of a liquid crystal polyester,(B) 3-50% by weight of an inorganic fibrous or acicular material having an average diameter of 15 .mu.m or below and an average length of 200 .mu.m or below, and(C) 3-30% by weight of an alkaline earth metal carbonate.
Abstract:
To provide a conductive film that is flexible, extendable and contractible, and for which the electrical resistance hardly increases even when the conductive film is extended. The conductive film contains an elastomer and metallic filler particles, and satisfies a condition (A) [an average value of reference numbers is 0.8 (1/µm) or more, or the metallic filler particles include flake-like metallic filler particles having a thickness of 1 µm or less and an aspect ratio of 26 or more and the average value of the reference numbers is 0.4 (1/µm) or more] and a condition (B) [a number of unit areas for which an area percentage of the elastomer is 60% or more is 20 or more], the condition (A) being a conductivity indicator and the condition (B) being a flexibility indicator.
Abstract:
[Object] Provided are a connection method and an electronic device, in which the manufacturing process can be simplified, and a connection structure using an adhesive can be produced at low cost. [Solution] A connection method according to the present invention includes a step (a3) of preparing a base material (321) including an electrode (322) for connection using an adhesive and an electrode (326) for connection using solder; a step (b3) of covering the electrode for connection using an adhesive and the electrode for connection using solder with oxidation preventing films (325); after the step (b3), a step (c3) of bonding the electrode (322) for connection using an adhesive to a connection conductor (312) with an adhesive (330) containing a thermosetting resin to establish electrical connection; and after the step (c3), a step (d3) of joining the electrode (326) for connection using solder to a connection conductor (342) using solder (350) by solder reflow treatment in a non-oxidizing atmosphere, wherein an increase in connection resistance between the electrode for connection using an adhesive and the connection conductor before and after the step (d3) is within a predetermined range.
Abstract:
A high thermal conductivity resin that is made up of a host resin matrix (42) and high thermal conductivity fillers (30) that are mixed within the host resin to form a resin mixture. The fillers comprise at least 3-5% by weight of the resin mixture, and the fillers are from an average of 1 -100 nm in at least one dimension, and where the particles are smaller than an average of 1000 nm in the particles' longest dimension. The host resin matrix forms an ordered resin shell (40) around the high thermal conductivity fillers (30), whereby resin molecules are aligned perpendicular to the surface of the high thermal conductivity fillers. An overlap of the ordered resin shells (44) is formed between the high thermal conductivity fillers such that continuous pathways for ordered resin shells are created through the resin mixture.
Abstract:
The present invention provides a fabric comprising at least one fiber strand comprising a plurality of fibers and having a resin compatible coating composition on at least a surface of the at least one fiber strand, wherein the at least one fiber strand has an Air Jet Transport Drag Force value of greater than 100,000 gram force per gram mass of strand as determined by a needle air jet nozzle unit having an internal air jet chamber having a diameter of 2 millimeters and a nozzle exit tube having a length of 20 centimeters at a strand feed rate of 274 meters per minute and an air pressure of 310 kiloPascals. The present invetion also provides a reinforced laminate comprising: (a) at least one matrix material; and (b) at least one fabric comprising at least one fiber strand comprising a plurality of fibers and having a resin compatible coating composition on at least a surface of the at least one fiber strand, wherein the at least one fiber strand has an Air Jet Transport Drag Force value of greater than 100,000 gram force per gram mass of strand as determined by a needle air jet nozzle unit having an internal air jet chamber having a diameter of 2 millimeters and a nozzle exit tube having a length of 20 centimeters at a strand feed rate of 274 meters per minute and an air pressure of 310 kiloPascals.
Abstract:
The invention aims at providing a resin composition for electronic parts which is in great demand as a circuit board material for electric and electronic equipments, and which has a low dielectric constant, low dielectric dissipation factor and a thermal resistance. This resin consists of a thermoplastic resin or a thermosetting resin, and wollastonite or zonotolite, fibrous material containing CaO.SiO2 as a main component, mixed as reinforcing fiber with the resin at a mixing ratio of 5-60 % based on the total weight of the resin and fiber.
Abstract:
The present invention provides a coated fiber strand comprising at least one fiber having a layer of a dried residue of a resin compatible coating composition on at least a portion of a surface of the at least one fiber, the resin compatible coating composition comprising: a) a plurality of discrete, dimensionally stable particles formed from materials selected from the group consisting of organic materials, polymeric materials, composite materials and mixtures thereof that provide an interstitial space between the at least one fiber and at least one adjacent fiber, the particles having an average particle size of about 0.1 to 5 micrometers; b) at least one lubricious material; c) at least one polymeric film former; and d) at least one coupling agent, and a fabric incorporating at least one of the fiber strands.