| 摘要 |
PROBLEM TO BE SOLVED: To provide a mobile phone having a simple configuration.SOLUTION: In a mobile phone, one end of a long shape piezoelectric bimorph element is supported vertically with regard to an upper side part of the mobile phone on a support part at the inner center of the upper side part in an open-sided form, in which oscillation is conducted to the upper part double angle of the mobile phone that serves as a cartilage conduction part while substantially disallowing the piezoelectric bimorph element to come in contact with the other parts of the mobile phone. Or, the one end of the piezoelectric bimorph element is supported horizontally with regard to the upper side part in an open-sided form. Or, both ends of the piezoelectric bimorph element are supported at a pair of support parts in the middle of the upper side part. The piezoelectric bimorph element is arranged closer to a back plate to secure a space around the surface plate upper part. A wide area equalization up to 20 kHz is provided for the output of an earphone jack output, and a cartilage conduction equalization up to 7 kHz is provided for the piezoelectric bimorph element. During a telephone conversation, up to 7 kHz equalization is provided for the earphone jack output. When an earphone conversation is carried out through the earphone jack, a signal is superimposed for cancelling self-voice on the output sound to the earphone jack. |
