| 摘要 |
The display device consists of a transparent cover which also serves a vibrating board for the sound source, and a piezoelectric element that has two transparent electrodes formed on both sides. one of the two transparent electrodes is attached to the transparent cover by transparent adhesives. The electrodes have a thickness of 75-125 nm and act as a reflection-prevention membrane for light having a wavelength of 300-500 nm.
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