| 摘要 |
<p>An insulator layer (10) made from, e.g., silicone rubber is provided on an insulating substrate (3) along the peripheral edge of a circuit electrode (2a). A dielectric layer (11) made from a material having a higher permittivity than the insulator layer (10), e.g., aluminum nitride, is provided on the insulator layer (10). The insulator layer (10) has the same thickness as the end part of the circuit electrode (2a) and is joined, without there being a level difference, to the end part of the circuit electrode (2a). The dielectric layer (11) is provided over the circuit electrode (2a) and the insulator layer (10) so as to cover the joining face between the circuit electrode (2a) and the insulator layer (10).</p> |
