摘要:
An object of the invention is to provide a printed circuit board that has an excellent heat dissipation performance and excellent reliability, and its manufacturing method. The printed circuit board includes: prepregs (2a) and (2b) being cured after each covering the surfaces of a metal plate (1) provided with first throughholes (1a) therein and the inner walls of the first throughholes (1a); prepregs (4a) and (4b) being cured after glass clothes (3a) and (3b) are sandwiched between the prepregs (2a) and (2b), and the prepregs (4a) and (4b), respectively; and second throughholes (8) that connect wiring layers (7a) and (7c), and (7b) and (7d) provided on both surfaces of prepregs (6a) and (6b), respectively. The prepregs (2a) and (2b) and the prepregs (4a) and (4b) are characterized in that they contain inorganic filler. Furthermore, the prepregs (2a) and (2b) and the prepregs (4a) and (4b) may contain elastomer.
摘要:
An object of the invention is to provide a printed circuit board that has an excellent heat dissipation performance and excellent reliability, and its manufacturing method. The printed circuit board includes: prepregs (2a) and (2b) being cured after each covering the surfaces of a metal plate (1) provided with first throughholes (1a) therein and the inner walls of the first throughholes (1a); prepregs (4a) and (4b) being cured after glass clothes (3a) and (3b) are sandwiched between the prepregs (2a) and (2b), and the prepregs (4a) and (4b), respectively; and second throughholes (8) that connect wiring layers (7a) and (7c), and (7b) and (7d) provided on both surfaces of prepregs (6a) and (6b), respectively. The prepregs (2a) and (2b) and the prepregs (4a) and (4b) are characterized in that they contain inorganic filler. Furthermore, the prepregs (2a) and (2b) and the prepregs (4a) and (4b) may contain elastomer.
摘要:
A CFRP core including a CFRP layer has a primary through hole. An adhesive member coats a wall surface of the primary through hole, and has a secondary through hole extending within the primary through hole. An electrically conductive layer is formed on a wall surface of the secondary through hole for electrically connecting upper and lower signal interconnections via the secondary through hole. A coating layer coats an outer peripheral edge of the CFRP core as seen in a plan view. Thereby, a printed interconnection board with low thermal expansivity and high thermal conductivity capable of preventing exfoliation of a CFRP layer on a side surface of a substrate using CFRP as a core, as well as preventing falling-off of carbon powders from the CFRP layer, and a method of manufacturing the same can be obtained.
摘要:
A CFRP core including a CFRP layer has a primary through hole. An adhesive member coats a wall surface of the primary through hole, and has a secondary through hole extending within the primary through hole. An electrically conductive layer is formed on a wall surface of the secondary through hole for electrically connecting upper and lower signal interconnections via the secondary through hole. A coating layer coats an outer peripheral edge of the CFRP core as seen in a plan view. Thereby, a printed interconnection board with low thermal expansivity and high thermal conductivity capable of preventing exfoliation of a CFRP layer on a side surface of a substrate using CFRP as a core, as well as preventing falling-off of carbon powders from the CFRP layer, and a method of manufacturing the same can be obtained.
摘要:
A method of manufacturing a printed wiring board (10) includes the steps of: forming a core including carbon fiber reinforced plastic having a primary through hole (3a); forming a first adhesive member (4a) on a lower surface of the core to cover the primary through hole (3a); charging an insulating member into the primary through hole (3a); forming a second adhesive member (4b) on an upper surface of the core; forming a third adhesive member (6a) below the first adhesive member (4a); forming a fourth adhesive member (6b) on the second adhesive member (4b); and forming interconnections on the core.
摘要:
A method of manufacturing a printed wiring board (10) includes the steps of: forming a core including carbon fiber reinforced plastic having a primary through hole (3a); forming a first adhesive member (4a) on a lower surface of the core to cover the primary through hole (3a); charging an insulating member into the primary through hole (3a); forming a second adhesive member (4b) on an upper surface of the core; forming a third adhesive member (6a) below the first adhesive member (4a); forming a fourth adhesive member (6b) on the second adhesive member (4b); and forming interconnections on the core.
摘要:
The present invention relates to a radome which has excellent transmission loss of radio waves and structural strength, which can be easily produced, and which has favorable workability, and a method of producing the same. The radome includes an olefin woven material and a glass cloth, in which the olefin woven material and the glass cloth are impregnated with a matrix resin to be integrated with each other, and the glass cloth is disposed closer to an inner side of the radome than the olefin woven material. As the olefin woven material, a woven material formed of an ultrahigh molecular weight polyethylene fiber can be used. As the matrix resin, an epoxy resin, a vinyl ester resin, an unsaturated polyester resin, or a silicone resin can be used.
摘要:
The present invention relates to a radome which has excellent transmission loss of radio waves and structural strength, which can be easily produced, and which has favorable workability, and a method of producing the same. The radome includes an olefin woven material and a glass cloth, in which the olefin woven material and the glass cloth are impregnated with a matrix resin to be integrated with each other, and the glass cloth is disposed closer to an inner side of the radome than the olefin woven material. As the olefin woven material, a woven material formed of an ultrahigh molecular weight polyethylene fiber can be used. As the matrix resin, an epoxy resin, a vinyl ester resin, an unsaturated polyester resin, or a silicone resin can be used.
摘要:
An object is to provide an insulating film for a semiconductor device which has characteristics of a low permittivity, a low leakage current, and a high mechanical strength, undergoes less change in these characteristics with the elapse of time, and has an excellent water resistance, as well as to provide a process and an apparatus for producing the insulating film for a semiconductor device, a semiconductor device, and a process for producing the semiconductor device. A gas containing a raw material gas which gasified a predetermined alkylborazine compound is supplied in a chamber (2); an electromagnetic wave is introduced into the chamber (2) using with an inductive coupling type plasma generation mechanism (4, 5, 6) to convert the gas into a plasma; a substrate (8) is placed in a plasma diffusion region of the plasma; gas-phase polymerization is performed with borazine skeletal molecules, as a fundamental unit, dissociated from the alkylborazine compound by the plasma so as to form the insulating film for semiconductor devices on the substrate (8).
摘要:
A coating composition having high dirt prevention properties and improved adhesiveness to hydrophobic surfaces such as those made of a plastic, and a coating method are provided. More specifically, provided is a coating composition, including: hydrophobic resin particles dispersed in an aqueous medium; hydrophilic inorganic fine particles; and an oxidizing agent containing at least one of a peroxide, a perchloric acid, a chlorate, a persulfuric acid, a superphosphoric acid, and a periodate, and also provided is a coating method including the steps of: preparing a first agent having hydrophilic inorganic fine particles and hydrophobic resin particles dispersed in an aqueous medium; preparing a second agent by adding, to the first agent, an oxidizing agent containing at least one of a peroxide, a perchloric acid, a chlorate, a persulfuric acid, a superphosphoric acid, and a periodate; applying the second agent onto a member to be coated; and drying the second agent on the member to be coated.