| abstract |
When a conventional piezoelectric element is used in a high-temperature and high-humidity environment, the piezoelectric composition pressure-sensitive body constituting the piezoelectric element absorbs water, and its electrical resistance, capacitance, and piezoelectric characteristics change, and is durable. It had the subject that it was inferior to reliability and reliability. A piezoelectric composition pressure sensing element including a piezoelectric ceramic powder and an organic polymer, a first electrode connected to the piezoelectric composition pressure sensing element, and a piezoelectric composition pressure sensing element connected to the piezoelectric composition pressure sensing element. A second electrode 2B insulated from the first electrode 2A, and a piezoelectric composition pressure-sensitive body 1 and a coating layer 6 that suppresses the absorption of moisture into the piezoelectric ceramic powder 5; A piezoelectric element having a configuration provided. [Selection] Figure 1 |