Abstract:
PROBLEM TO BE SOLVED: To provide a flexible substrate module that uses a flexible substrate and is sufficiently excellent in heat radiation to a mounted heat source, flexibility and integration.SOLUTION: In a flexible substrate module 1 which has a print wiring layer 12 formed as a surface layer laminated at the surface side of a flexible insulating base material 11, and a heat source 14 mounted on the print wiring layer 12 and is fixed to a housing K as a fixing partner in contact with the housing K, thermal diffusion promoting layers 21,23 formed of high thermal conduction material to promote enlargement of the area of a heat spot transferred from the heat source 14 to the print wiring layer 12 toward the housing K as the fixing partner are laminated as back surface layers laminated at the back surface side of the flexible insulating base material 11 over plural times.
Abstract:
PROBLEM TO BE SOLVED: To provide a flexible printed wiring board which is used within an automatic transmission and is capable of preventing an insulating resistance between the adjacent conductor circuits from lowering even when it is soaked in lubrication oil. SOLUTION: This flexible printed wiring board 1 is intended for use in lubrication oil. This board comprises a conductor circuit 4 provided on a base material 2, a terminal array 9 for electrically connecting the conductor circuit 4 and the outside of the flexible printed wiring board 1, and a cover lay film 7 for covering the conductor circuit 4. In addition, the terminal array 9 is covered with a coating material 11. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a high frequency circuit structure which includes a high frequency circuit, efficiently realizes good electric characteristics, and, in particular, achieves the downsizing of a printed wiring board when the printed wiring board is formed, and to provide a manufacturing method of the high frequency circuit structure.SOLUTION: A high frequency circuit structure K includes: a base material 10 formed by an insulative resin; a first high frequency circuit 21a provided on the base material 10 and made of a conductive metal; and a second high frequency circuit 21b electrically connected with the first high frequency circuit 21a in at least a part thereof. The second high frequency circuit 21b is formed as a layer formed by applying and burning a conductive ink containing metal particles.
Abstract:
PROBLEM TO BE SOLVED: To provide a flexible printed wiring board which has excellent electromagnetic shielding property and fire retardancy and superior step coverage and flexibility, has no environmental problems, and does not require a process such as thermal press for forming a shielding layer in manufacturing the same. SOLUTION: The flexible printed wiring board comprises a base film, conductor circuit formed on the base film, cover lay for covering the conductor circuit, conductive paste layer formed on the cover layer, and top coat formed on the conductive paste layer. An adhesive layer interposed between the base film and the cover lay contains a non-halogen flame retarder, and the conductive paste layer has an average thickness of 22 μm or less and/or the top coat contains a non-halogen flame retarder. COPYRIGHT: (C)2006,JPO&NCIPI