摘要:
PROBLEM TO BE SOLVED: To provide not only a method for forming a multilayer structure but also the multilayer structure itself created by using the presented method. SOLUTION: The method for forming a multilayer structure includes: a step for preparing a dielectric composition with a permittivity ranging from 50 to 150 which contains paraelectrics fillers and polymers; a step for adhering the dielectric composition to a carrier film to form a multilayer film with a dielectric layer and a carrier film layer; and a step for pasting the multilayer film to a core with a circuit. It also includes: a step for facing the dielectric layer of the multilayer film layer to the core with a circuit; a step for removing the carrier film layer from the dielectric layer before processing; a step for adhering the metal layer to the dielectric layer; a step for producing a planer capacitor with the core with a circuit, dielectric layer, and metal layer; and a step for processing the planer capacitor to form a multilayer structure. COPYRIGHT: (C)2007,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide an FC package structure that prevents the reliability from lowering for substrate reflow and reduces the cost, maintaining the yield of a product and its manufacturing method. SOLUTION: This package manufacturing method provides a substrate 60 with multiple IC substrate units 60a each of which has a connection pad 62 on the surface. It forms an insulated layer 64 having a pattern, covering the substrate 60 and the connection pad 62 and additionally forms a hole which partially exposes the upper surface of each connection pad 62, filling the hole with a conductor material 68 to provide multiple chips 70 whose multiple conductive bumps 72 are established on the lower surfaces. In addition, each chip 70 is adhered to the surface of an IC substrate unit 60a and then the substrate 60 is cut off, so that multiple FC package structures can be produced, each having at least one chip 70 on the surface. COPYRIGHT: (C)2007,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a wiring board which improves insulation reliability and production yield. SOLUTION: The wiring board 10 is provided with a conductor pattern comprising a lead 5 which is formed on an organic layer and has a thickness (t) greater than a width W. COPYRIGHT: (C)2006,JPO&NCIPI
摘要:
PROBLEM TO BE SOLVED: To provide a wiring member that hardly causes the sinking, deviation, etc., of wiring at laminating time and has a continuity pattern having a sufficient film thickness. SOLUTION: This wiring member is provided with a sheet-like porous substrate (11) containing many three-dimensionally branched continuous pores having openings in the first and second main surfaces (11a and 11b) of the substrate (11), and a conductive section (12) which is formed on the first main surface (11a) of the porous substrate (11) and at least partially forms a mutually intruding structure (13) with the porous substrate (11) at the interface with the substrate (11). At least, either one of the mean diameter or mean opening ratio of the openings formed in the first main surface (11a) of the substrate (11) is smaller than that of the openings formed in the second main surface (11b) of the substrate (11). COPYRIGHT: (C)2005,JPO&NCIPI