| 摘要 |
<p>PURPOSE: To easily obtain a circuit board having an excellent thermal conductivity, by forming a printed wiring board from compound of electrically and thermally insulating resin and synthetic resin to which filler having an excellent thermal conductivity is added. CONSTITUTION: A circuit board on which an electronic element 3 or 8 is mounted is formed by using the following; a plate member 1 or 5 composed of polyarylether sulfone filled with aluminum flake, and a plate member 2 or 6 composed of thermally and electrically insulating polyarylether sulfone. An element 3 or 8 constituted by metal coating is fixed on the plate member 2 or 6 of the circuit board, by using a heat dissipating protrusion 4 or 7. The element 3 and 8 are mounted on the single face or both faces of the circuit board, and excellent thermal conductivity is imparted to the circuit board.</p> |
