Abstract:
PROBLEM TO BE SOLVED: To provide a photosensitive resin composition suitable for formation of an insulating coating such as a solder resist film, which can prevent generation of an undercut in a cured coating film even when the composition is subjected to exposure by use of a direct drawing device that directly draws an image.SOLUTION: The photosensitive resin composition comprises (A) a carboxyl group-containing photosensitive resin, (B) a photopolymerization initiator, (C) a compound having an ethylenic unsaturated group, (D) a non-reactive diluent and (E) an epoxy compound. The composition contains (B-1) an oxime ester compound and (B-2) an aminocarbonyl compound having a tertiary amino as the above (B) photopolymerization initiator.
Abstract:
PROBLEM TO BE SOLVED: To provide a high-reliability multilayer wiring board hardly causing a failure, and to provide a method of manufacturing a multilayer wiring board for manufacturing the same.SOLUTION: This multilayer wiring board includes: a substrate; a land including a first conductor arranged on the substrate, a second conductor laminated on a surface of the first conductor, which is distant from the substrate, and a stress-relieving layer arranged between the first conductor and the second conductor; and a connection portion that contacts the land and is electrically connected to the land.
Abstract:
PROBLEM TO BE SOLVED: To provide a method of manufacturing a circuit structure which is suitable for manufacture of a thin-wire circuit. SOLUTION: The method of manufacturing the circuit structure is described as follows. Firstly, a composite dielectric layer, a circuit board 130 and an insulating layer 120 disposed between the composite dielectric layer and circuit board are provided. The composite dielectric layer includes a non-platable dielectric layer 112 and a platable dielectric layer 114 between the non-platable dielectric layer 112 and the insulating layer 120 wherein the non-platable dielectric layer 112 includes a chemical non-platable material and the platable dielectric layer 114 includes a chemical platable material. Then, the composite dielectric layer, the insulating layer 120, and the circuit board 130 are press-fit. Subsequently, a through-hole passing through the composite dielectric layer and the insulating layer 120 is formed and a conductive via 140 connecting a circuit layer of the circuit board 130 is formed therein. Then, a trench pattern 116 passing through the non-platable dielectric layer 112 is formed on the composite dielectric layer. Subsequently, a chemical plating process is performed to form a conductive pattern 150 in the trench pattern 116. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
Disclosed is a manufacturing method of metal structure in multi-layer substrate and structure thereof. The manufacturing method of the present invention comprises following steps: coating at least one photoresist layer on a surface of a dielectric layer, and then exposing the photoresist dielectric layer to define a predetermined position of the metal structure; therefore, removing the photoresist layer at the predetermined position and forming the metal structure at the predetermined position before forming at least one top-cover metal layer on a surface of the metal structure. The present invention can form a cover metal layer covering over the top surface and the two side surfaces, even the under surface of the metal structure, by one single photomask. Moreover, a finer metal structure with higher reliability can be manufactured. Furthermore, a metal structure can be used as a coaxial structure is also realized.
Abstract:
PROBLEM TO BE SOLVED: To provide a method of manufacturing a multilayer ceramic substrate having a cavity. SOLUTION: This method of manufacturing the multilayer ceramic substrate having a cavity includes steps of: preparing a first ceramic laminate, and second and third laminates which are provided on top and bottom surfaces of the first ceramic laminate, respectively; forming a first polymer layer of a region corresponding at least to an opening in the top surface of the second ceramic laminate, and forming a second polymer layer in a region corresponding to at least to an opening of the bottom surface of the third ceramic laminate; laminating the second ceramic laminate to position the first polymer layer in a lower part of the opening; forming a desired multilayer ceramic laminate by laminating the third ceramic laminate to position the second polymer layer in an upper part of the opening; jointing first and second restraint layers on one-side surfaces of the second and third ceramic laminates, respectively; and baking the multilayer ceramic laminate with the first and second restraint layers arranged thereon. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method for forming a metal pattern in which a process of reduced cost is possible, and which can provide low electric resistance. SOLUTION: The method for forming a metal interconnection includes: (a) a step depositing a dielectric layer 31 on a supporting substrate 30; (b) a step forming a latent mask pattern of a metal pattern on the dielectric layer; (c) a step etching the dielectric layer exposed by the latent mask pattern; (d) a step forming a seed layer 32 on the supporting substrate by activating the supporting substrate; (e) a step removing the latent mask pattern and the portion of the seed layer disposed on the latent mask pattern through a lift-off process; and (f) a step plating a metal layer 33 on the patterned seed layer. In addition, a patterned metal structure which is manufactured by the method for forming a metal interconnection, and thin film transistor-liquid crystal displays using the same are obtained. COPYRIGHT: (C)2009,JPO&INPIT