Taiyo Ink Mfg. Co., Ltd.

Taiyo Holdings Co., Ltd.

Shoji Minegishi

Masao Arima

Daichi Okamoto

Arata Endo

Masayuki Shimura

Yoshiyuki Furuta

Nobuhito Ito

Masao Yumoto

Hidekazu Miyabe

Xiaozhu Wei

Kazuya Okada

Shuichi Yamamoto

Gento Iwayama

Yoshitaka Hirai

Naoki Yoneda

Hideaki Kojima

Provided is a photosensitive dry film capable of forming a solder resist layer that has an excellent filling property of underfill and that exhibits an excellent adhesion with a mold material. The photosensitive dry film according to the present invention is a photosensitive dry film including a supporting film and a photosensitive resin layer provided on one side of the supporting film, wherein the arithmetic average surface roughness Ra of the side of the supporting film on which the photosensitive resin layer is provided is 50 to 390 nm.

Photosensitive dry film and process for producing printed wiring board using the same

A dry film includes a carrier film, a thermosetting resin composition layer, and a photocurable resin composition layer formed between the carrier film and the thermosetting resin composition layer. The thermosetting resin composition layer is formed by applying and drying a thermosetting resin composition. The photocurable resin composition layer is formed by applying and drying a photocurable resin composition. A method of producing a printed writing board includes forming a resin insulation layer which includes a thermosetting resin composition layer and a photocurable resin composition layer on the substrate, in the order of the thermosetting resin composition layer and the photocurable resin composition layer from a surface side of the substrate, patterning the resin insulation layer by photolithographic approach, and patterning the resin insulation layer by laser processing.

Dry film, printed wiring board using same, method for producing printed wiring board, and flip chip mounting substrate

A laminated structure including a base material and resin insulating layers formed on the base material. The resin insulating layers include a resin insulating layer (A) containing a curing accelerator composed of an N atom-containing basic compound such that the resin insulating layer (A) is in contact with the base material. The laminated structure includes a resin insulating layer (B) which contains a P atom-containing curing accelerator in addition to the resin insulating layer (A).

Laminated structure, dry film and method of producing laminated structure

The present invention provides a curable resin composition that can provide a cured material excellent in insulation reliability while maintaining adhesiveness and provide a composition for forming a solder resist, a dry film and a printed wiring board, a laminate having a resin insulating layer excellent in insulation reliability while maintaining adhesiveness, a dry film for forming this and a process for preparing a laminate using the dry film. The curable resin composition contains (A) an imidazole-isocyanate adduct, (B) a carboxyl group-containing resin and (C) a thermosetting resin. The above laminate has a substrate and a plurality of resin insulating layers formed on the substrate, in which one of the plural resin insulating layers in contact with the substrate is a layer formed of the curable resin composition.

Curable resin composition, composition for forming solder resist, dry film and printed wiring board, and laminate and process for preparing the same

An alkaline development-type curable resin composition having an excellent strength against tearing, breaking, distortion and torsion, and excellent toughness, a cured product of the curable resin composition, a printed circuit board having the cured product, and a process for manufacturing the cured product are disclosed. A curable resin composition is obtained, which contains (A) a thermoplastic resin, (B) a thermosetting component, (C) an alkali-soluble component, and at least one of (D-1) a photopolymerization initiator and (D-2) a photo-base generator, the thermoplastic resin (A) having two or more glass transition points including two glass transition points Tgx and Tgy, which satisfy Tgx&#x3e;30&#xb0; C. and Tgy&#x3c;0&#xb0; C. and the thermosetting component (B) having a glass transition point Tgz, which satisfies Tgz&#x2267;Tgy+20&#xb0; C. Moreover, a cured product of the curable resin composition, a printed circuit board having the cured product, and a process for manufacturing the cured product are obtained.

Curable resin composition, cured product thereof, printed circuit board comprising the same, and method for producing the cured product

A curable composition to be used for a printed wiring board is disclosed, which has an excellent flexibility and an excellent adhesive property with respect to both a plastic substrate and a conductive layer in the printed wiring board. The curable composition includes (A) a (meth)acrylate compound having a polyene structure, (B) a (meth)acrylate compound having a hydroxyl group; and (C) a photopolymerization initiator. From the curable composition, a cured coating film, and a printed wiring board including the cured coating film in the form of a predetermined pattern are obtained.

Curable composition, cured coating film prepared from curable composition, and printed wiring board including the cured film

[Problem] Provided are: a pattern forming method by which a pattern can be formed by development using a thermosetting resin composition and a cured layer having excellent curability can be obtained; a thermosetting resin composition used in the pattern forming method; and a printed circuit board. [Means for Solution] The pattern forming method according to the present invention is characterized by comprising the steps of: (A) forming a resin layer composed of an alkali-developable thermosetting resin composition comprising a photobase generator on a substrate; (B) activating the photobase generator contained in the alkali-developable thermosetting resin composition by irradiation with a light in a pattern form so as to cure an irradiated part; and (C) forming a negatively patterned layer by removing a non-irradiated part by alkali development.

Pattern forming method, alkali-developable thermosetting resin composition, printed circuit board and manufacturing method thereof

Provided is a photocurable resin composition, which has sensitivity equal to or greater than existing compositions, has alkali development properties, and which produces a cured product that does not become brittle with changes in temperature, and which also has excellent reliability in terms of water resistance, electrical insulating properties, PCT resistance, and the like. The photocurable resin composition comprises a carboxyl group-containing resin, a photopolymerization initiator, a vinyl group-containing elastomer, and a styryl group-containing compound.

Photocurable resin composition

An actinic energy ray-curable resin is obtained by reacting an unsaturated monocarboxylic acid (c) with a terminal epoxy group of an epoxy resin having an unsaturated group and a hydroxyl group in its side chains and an epoxy group in its terminal and further reacting a polybasic acid anhydride (d) with the hydroxyl group of the above-mentioned epoxy resin, wherein the above-mentioned epoxy resin is a product of the polyaddition reaction of a reaction product (I) of a polybasic acid anhydride (a) and a compound (b) having at least one unsaturated double bond and one alcoholic hydroxyl group in its molecule, a compound (II) having at least two carboxyl groups in its molecule, and a bifunctional epoxy compound (III), wherein at least either one of the carboxyl group-containing compound (II) and the bifunctional epoxy compound (III) is a compound containing no aromatic ring. A photocurable and thermosetting resin composition comprising this actinic energy ray-curable resin, a photopolymerization initiator, a diluent, and a cyclic ether compound is useful as a solder resist for a printed circuit board, interlaminar insulating materials for a multi-layer printed circuit board, and the like.

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Hiki-gun, Japan

Shoji Minegishi