| 摘要 |
PURPOSE: A manufacturing method of a water lever sensor, which can sense liquid level, and a structure thereof are provided to form an electrode using photolithography and etching process. CONSTITUTION: A manufacturing method of a water lever sensor is as follows. A conductive film(110) is stuck on a first insulating film(100) by using laminating. The capacitance sensor pattern is formed through the photo lithography process and etching process. A second insulating film(120) is stuck on the capacitance sensor pattern by using laminating. The PCB pattern for the circuit connection is independently formed as the PCB substrate type different from the capacitance sensor pattern. The capacitance sensor pattern and signal processing unit are interlinked electrically.
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