| 摘要 |
PURPOSE:To eliminate variance in every process and to improve frequency characteristics, by limiting the soldering part for electrode provided for a plate piezoelectric drive section and electric connecting body by means of a solder resist and preventing the solder flow. CONSTITUTION:The electrodes 2, 3 are provided for a plate piezoelectric drive section of the electroacoustic transducer and parts for soldering of the electric connecting bodies 11, 12 such as leads supplying a signal voltage to the electrodes 2, 3 are enclosed with the solder resists 13, 14. The resists 13, 14 are formed with the print after the forming of the electrodes 2, 3. In soldering, the solder flow from the soldered parts 13, 14 is prevented, the variance of the soldered parts by each worker is avoided, the accurate soldering is attained at a normal position, allowing to improve the frequency characteristics of the transducer. |
