| 摘要 |
A low-cost leak sensor that prevents leakage current from flowing between electrodes when moisture is deposited. A leak sensor (16) is formed on an insulating substrate. The leak sensor has a through hole (20) having a pair of opposed walls with a predetermined space. The opposed walls are provided with conducting films (22a, 22b), respectively. On the opening of the through hole in the insulating substrate, a pair of lands (19a, 19b) are connected electrically with the pair of conducting films. A pair of wiring patterns (18a, 18b) are connected electrically with the pair of lands on the insulating substrate. <IMAGE> |
