SAN-EI KAGAKU CO., LTD. Patent applications |
Patent application number | Title | Published |
20130264105 | SOLDER-MOUNTED BOARD, PRODUCTION METHOD THEREFOR, AND SEMICONDUCTOR DEVICE - The present invention provides a solder-mounted board which realizes reliable mounting of a component thereon; a method for producing the board; and a semiconductor device. The solder-mounted board includes a substrate; a wiring layer; a solder pad for mounting a component by the mediation of the solder; and an insulating layer which covers the wiring layer such that at least the solder pad is exposed, the wiring layer, the solder pad, and the insulating layer being provided on at least one surface of the substrate, wherein the insulating layer is formed of a first insulating layer provided on the substrate and the wiring layer, and a second insulating layer provided on at least a portion of the first insulating layer. | 10-10-2013 |
20130164679 | INORGANIC FILLER AND ORGANIC FILLER-CONTAINING CURABLE RESIN COMPOSITION, RESIST FILM COATED PRINTED WIRING BOARD, AND METHOD FOR PRODUCING THE SAME - A curable resin composition comprises: (I) 100 parts by weight of a curable resin; (II) 10 to 1200 parts by weight of an inorganic filler; and (III) 1 to 100 parts by weight of an organic filler having an elastic modulus of 1 to 2000 (MPa) and an average particle diameter of 0.01 to 10 v, wherein a content weight ratio of the components (II) and (III) is 1 to 41. | 06-27-2013 |
20120168219 | ACTIVE RESIN COMPOSITION, SURFACE MOUNTING METHOD AND PRINTED WIRING BOARD - A surface mounting method includes applying an active resin composition to at least part of a surface of a printed wiring substrate; mounting a surface mount device on the substrate; performing reflow soldering; applying an under-filling resin into a space of interest; before and/or after applying the under-filling resin, performing a vacuum treatment and/or heating at a temperature lower than the curing reaction-initiating temperature of any of the applied active resin composition and the under-filling resin; and subsequently, thermally curing the resin composition and the under-filling resin. The active resin composition contains an epoxy resin in an amount of 100 parts by weight, a blocked carboxylic acid compound in an amount of 1-50 parts by weight and/or a carboxylic acid compound in an amount of 1-10 parts by weight, and a curing agent which can initiate curing reaction at 150° C. or higher, in an amount of 1-30 parts by weight. | 07-05-2012 |
20120153009 | METHOD FOR SURFACE MOUNTING USING CLEANING-FREE ACTIVATED RESINOUS COMPOSITION - Activated resinous composition contains, on the basis of epoxy resin being solid at a room temperature of 100 parts by weight, carboxylic acid compound of 1 to 10 parts by weight, hardening agent of 1 to 30 parts by weight, a hardening reaction initiation temperature of said hardening agent being 150° C. or higher, and solvent of 10 to 300 parts by weight. | 06-21-2012 |
20110132639 | PRINTED WIRING BOARD AND METHOD FOR PRODUCING THE SAME - A method produces an undercoat-covered smoothed printed wiring board, requiring no step of polishing the surface of the printed wiring board. A method for producing a solder-resist-covered printed wiring board causes no depression in an area between circuit traces. A printed wiring board so produced is also described. The method for producing a printed wiring board includes applying a photo- and heat-curable resin composition onto at least a part of a surface of a printed wiring substrate; placing an optically transparent smoothing member on the resin layer; moving a hard roller on the smoothing member to thin the applied resin layer to a thickness of interest; placing a negative-image mask on the smoothing member; exposing the applied resin layer to light via the negative-image mask; removing the optically transparent smoothing member; removing a light-unexposed portion of the applied resin layer through development; and completely heat-curing the cured light-exposed portion. | 06-09-2011 |
20110031300 | CLEANING-FREE ACTIVATED RESINOUS COMPOSITION AND METHOD FOR SURFACE MOUNTING USING THE SAME - Activated resinous composition contains, on the basis of epoxy resin being solid at a room temperature of 100 parts by weight, carboxylic acid compound of 1 to 10 parts by weight, hardening agent of 1 to 30 parts by weight, a hardening reaction initiation temperature of said hardening agent being 150° C. or higher, and solvent of 10 to 300 parts by weight. | 02-10-2011 |
20100006324 | CURABLE RESIN COMPOSITION, HALOGEN-FREE RESIN SUBSTRATE, AND HALOGEN-FREE BUILD-UP PRINTED WIRING BOARD - In a curable resin composition containing an inorganic filler, the average particle diameter of the inorganic filler is 1 μm or less and the content of the inorganic filler is 50 wt % or less. The curable resin composition can be preferably used for a halogen-free resin substrate and the like having a small load on an environment as a hole-plugging curable resin composition as well as used to provide a hole-plugging build-up printed wiring board having a via-on-via structure (in particular, a stacked via structure) having an excellent crack-resistant property, an excellent insulation/connection reliability, and the like. | 01-14-2010 |
20090087775 | INORGANIC FILLER AND ORGANIC FILLER-CONTAINING CURABLE RESIN COMPOSITION, RESIST FILM COATED PRINTED WIRING BOARD, AND METHOD FOR PRODUCING THE SAME - A curable resin composition comprises: (I) 100 parts by-weight of a curable resin; (II) 10 to 1200 parts by weight of an inorganic filler; and (III) 1 to 100 parts by weight of an organic filler having an elastic modulus of 1 to 2000 (MPa) and an average particle diameter of 0.01 to 10 μm, wherein a content weight ratio of the components (II) and (III) is 1 to 41. | 04-02-2009 |