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 (a2) of preparing a base material including an electrode (22) for connection using an adhesive (30) and an electrode (26) for connection using solder (50); a step (b2) of covering only the electrode (26) for connection using solder with an organic film (15) formed by OSP treatment or a noble metal plating film, the electrode for connection using solder being arranged on the base material; a step (c2) of joining the electrode (26) for connection using solder to a connection conductor (42) using solder by solder reflow treatment in a non-oxidizing atmosphere; and after the step (c2), a step (d2) of bonding the electrode (22) for connection using an adhesive to a connection conductor (12) with an adhesive (30) mainly containing a thermosetting resin to establish electrical connection.
Abstract:
Provided is a film adhesive that has a high flexibility and a high adhesion strength and is easy to prepare by mixing. The film adhesive contains, as essential components, a bisphenol A phenoxy resin having a molecular weight of 30,000 or more, an epoxy resin having a molecular weight of 500 or less, a glycidyl methacrylate copolymer, a rubber-modified epoxy resin, and a latent hardener. Preferably, the weight of the glycidyl methacrylate copolymer per epoxy equivalent is 1000 or less.
Abstract:
The invention offers a board-connecting structure that can provide electrodes with a fine pitch and that can combine the insulating property and the connection reliability. The structure of connecting printed wiring boards 10 and 20 electrically connects a plurality of first electrodes 12 and 13 provided to be adjacent to each other on a first board 11 with a plurality of second electrodes 22 and 23 provided to be adjacent to each other on a second board 21 through an adhesive 30 that contains conductive particles 31 and that has anisotropic conductivity. By heating and pressing the adhesive placed between the mutually facing first electrode 12 and second electrode 22 and between the mutually facing first electrode 13 and second electrode 23, an adhesive layer 30a is formed between the first board 11 and the second board 21 and in the adhesive layer 30a, a cavity portion 33 is formed between the first electrodes 12 and 13 and between the second electrodes 22 and 23.
Abstract:
A method for the treatment of micro pores within a mica paper that includes: obtaining a silane with a molecular weight of between approximately 15 and 300, adding the silane to the mica paper, and reacting the silane with the inner surface of the micro pores within the mica paper. After this, a resin is impregnated into the mica paper, and the resin binds to the inner surfaces of the micro pores with the mica paper through the silane. In one embodiment, the mica paper is compressed by an amount between 5% and 30% of its original thickness. In another embodiment, the mica paper is compressed both prior to reacting the silane and during impregnation with the resin.
Abstract:
In one embodiment the present invention provides for a method of forming HTC dendritic fillers 40 within a host resin matrix that comprises adding HTC seeds 42 to the host resin matrix. The HTC seeds have been surface functionalized to not substantially react with one another. The seeds then accumulate HTC building blocks 42, and the HTC building blocks have also been surface functionalized to not substantially react with one another. Then assembling the HTC building blocks with the HTC seeds to produce HTC dendritic fillers 40 within the host resin matrix.
Abstract:
The invention relates to a dispersion for applying a metal layer to an electrically non-conductive substrate containing an organic binder component, a metal component with different metals and/or metal particle shapes, and a solvent component. The invention further relates to methods for producing said dispersion, methods for creating an optionally structured metal layer with the aid of the dispersion, the obtained substrate surfaces, and the use thereof.
Abstract:
A substrate according to the present invention includes a metal plate, and an insulating film, which is provided on the surface of the metal plate and which includes needle alumina particles and granular particles. The substrate of the present invention has excellent insulating property and can be manufactured on an industrial basis with acceptable efficiency.
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.