| 摘要 |
PURPOSE:To obtain a circuit board which has realized packaging of large size electronic parts and check of signals and also reduction in size by burying electronic parts provided on an insulating substrate and exposing the end of conductive supporting pole. CONSTITUTION:Metal pins 12 are deposited by solder 13 in the areas other than the electronic part mounting areas on a ceramic plate 11, the terminals 14 are provided at the edge of substrate 11, and the specified circuit is formed by connecting electronic parts, pins 12 and terminals 14. The surface is covered with a resin 15 by the powder painting and the surface 15a is then polished in order to expose the top end of the pins 12. According to this constitution, external connection becomes possible while acquiring stability of quality within the circuit by making use of the pins 12, the circuit can be designed freely and the circuit itself can be reduced in size. |
