| 摘要 |
PURPOSE:To decrease the number of a part and to reduce the thickness of a timepiece by forming a dial of an aluminum printed board, providing a time display to an aluminum base material surface, and fitting circuit parts to a copper foil surface. CONSTITUTION:The dial 1 is made of the aluminum printed board. A scale and a numeral of the timepiece are printed on the surface of the aluminum base material. A circuit pattern is formed on the surface of the copper foil of the dial 1 and a crystal oscillator 2, an integrated circuit 3, a trimmer capacitor 4, a chip capacitor 6, etc., are soldered. Mechanical parts such as gears and a motor are arranged without overlapping the circuit part. |
