| 摘要 |
The present invention is provided with a sheet having: a first oscillator (34); a first oscillator region (38); a columnar section (37); and a film section that connects, in the disposition direction (C), a plurality of first upper electrodes (32) in the first oscillator region (38), and a second surface (37y) of the columnar section (37) to each other. The present invention is also provided with a bonding section (50) that bonds between the columnar section (37) and the first oscillator (34b), in a state wherein the sheet is rolled such that the film section (35) is disposed as an outer surface, and the columnar section (37) and the first oscillator (34b) positioned at a second end section (38b) are in contact with each other in the first oscillator region (38). |
