Abstract:
PROBLEM TO BE SOLVED: To provide an adhesive resin composition providing a non-halogen one-pack type adhesive solution excellent in flame retardancy and storage stability, and to provide a laminate using the adhesive resin composition and a flexible printed wiring board. SOLUTION: The adhesive resin composition contains: an epoxy resin and/or a phenoxy resin; an epoxy-containing copolymer which is obtained by copolymerizing an epoxy-donating monomer and an ethylenically unsaturated monomer copolymerizable with the epoxy-donating monomer; a thermoplastic resin; and a curing agent. The epoxy-containing copolymer has a weight-average molecular weight of not less than 5,000 and less than 100,000 and an epoxy equivalent of 3,500 g/eq or less. The composition has good compatibility with polymer components. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a non-halogen-based adhesive composition having sufficient flame retardancy without decreasing adhesiveness or solder heat resistance, and to provide a laminate and a flexible printed wiring board using the composition. SOLUTION: The adhesive resin composition contains an epoxy resin, a thermoplastic resin, a benzoxazine compound, a non-halogen-based flame retardant and a curing agent, wherein at least either the epoxy resin or the thermoplastic resin contains a resin containing phosphorus, and the content rate of phosphorus in the adhesive resin composition is not less than 2.5 mass%. In a preferred embodiment, a phosphorus-containing epoxy resin is used for the epoxy resin, a thermoplastic resin containing a phosphorus-containing polyester by 10 to 70 mass% is used as the thermoplastic resin, and the composition contains 5 to 25 parts by mass of the benzoxazine and 1 to 30 parts by mass of the non-halogen flame retardant, each with respect to 100 parts of resin. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an optical module capable of coping with the miniaturization of an electric equipment, such as a portable telephone unit, and to provide the electric equipment having such an optical module. SOLUTION: The optical module 5 has: a substrate 10; a laser diode 2 that is provided on a surface 10a of the substrate 10 and is a light-emitting element emitting a light signal; a drive element 3 that is provided on the surface 10a of the substrate 10, is connected to the laser diode 2 electrically, and drives the laser diode 2; and an electric connector 12 that supplies the drive power of the laser diode 2 and the drive element 3 and is provided on the rear 10b of the substrate 10. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a printed wiring board which can easily discriminate a quality of a blind via and which can determine whether the blind via is non-standard.SOLUTION: In a manufacturing method of a printed wiring board having a blind via 5 in which a first conductive layer 2 and a second conductive layer 4 sandwiching an insulation layer 3 are connected by a conductor 7, the blind via 5 is energized under an energization condition where a non-standard blind via is disconnected and a standard blind via is not disconnected.
Abstract:
PROBLEM TO BE SOLVED: To provide a non-halogen adhesive composition having excellent flame retardancy and obtaining excellent peeling strength, and to provide a laminate using the composition and a flexible printed wiring board. SOLUTION: The adhesive resin composition contains: (A) an epoxy resin and/or a phenoxy resin; (B) an epoxy-containing styrene copolymer containing an epoxy-donating monomer unit and a styrene monomer unit; (C) a thermoplastic resin; and (D) a curing agent. A content of the (B) epoxy-containing styrene copolymer relative to the total mass of the resin components contained in the resin composition is 3-25 mass%. In the (B) component, the weight-average molecular weight is preferably 5,000-120,000, the content of the styrene monomer is preferably 35-98 mass%, and the content of the styrene monomer to the total mass of the resin components is preferably 10-20 mass%. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a printed wiring board that allows sure coating of a conductive layer by a cover coat while preventing the occurrence of oxidization or corrosion of the conductive layer, and its manufacturing method. SOLUTION: The printed wiring board 1 is provided with a conductive layer 3 provided on the surface of a base material 2, a conductive paste 7 provided on the surface of the conductive layer 3, and a cover coat 5 provided on the surface of the conductive layer 3 and on the surface of the conductive paste 7 so as to coat the conductive layer 3 and the conductive paste 7. The conductive paste 7 includes a metal reflective member 21 for reflecting ultraviolet rays. The cover coat 5 is formed of a negative-type photosensitive resin composition that is ultraviolet curable. When ultraviolet rays are emitted to the conductive paste 7, the metal reflective member 21 reflects the ultraviolet rays. The ultraviolet rays are scattered in the conductive paste 7. Scattered light of the ultraviolet rays scattered by the conductive paste 7 is emitted to a part of the cover coat 5 located around the conductive paste 7. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a printed wiring board which inhibits peeling between an insulation layer and a conductive layer in a blind via.SOLUTION: A printed wiring board 1 includes: an isolation layer 20; a first conductive layer 10 formed on one surface of the insulation layer 20; and a second conductive layer 30 that is formed on the other surface of the insulation layer 20 and is connected with the first conductive layer 10 through a blind via 40. The second conductive layer 30 includes: a conductive particle layer 31 that is formed on the insulation layer 20 and includes conductive particles; an electroless plating layer 32 laminated on the conductive particle layer 31; and an electric plating layer 33 laminated on the electroless plating layer 32. The blind via 40 includes: the conductive particle layer 31 that is formed on a surface of a through hole 41 and includes the conductive particles; the electroless plating layer 32 laminated on the conductive particle layer 31; and the electric plating layer 33 laminated on the electroless plating layer 32 and is connected with the first conductive layer 10 at a bottom surface of the through hole 41.
Abstract:
PROBLEM TO BE SOLVED: To provide a printed wiring board having small variations in diameters of blind vias and a manufacturing method of the printed wiring board.SOLUTION: A manufacturing method of a printed wiring board is described as follows. A through hole 41 reaching a conductive substrate 10 is formed in an insulation layer 20. A conductive ink containing conductive particles is applied to a region including the through hole 41 on the insulation layer 20 to form a conductive particle layer 31. Further, an electric plating layer 33 is formed on the conductive particle layer 31 by electric plating. Then, the conductive particle layer 31 and the electric plating layer 33, which are located around a blind via 40, are removed.
Abstract:
PROBLEM TO BE SOLVED: To provide a non-halogen-based adhesive composition excellent in adhesiveness, solder heat resistance, flame retardancy as well as flow characteristics, and to provide a laminate and a flexible printed wiring board using the composition. SOLUTION: The adhesive resin composition contains: a phosphorus-containing epoxy resin and/or a phenoxy resin; a phosphorus-containing polyester having a weight-average molecular weight of over 20,000 to 150,000; other thermoplastic resin; and a curing agent. It is preferable that the composition further contains a benzoxazine compound, but an inorganic filler is not substantially compounded therein. COPYRIGHT: (C)2010,JPO&INPIT