Electronic device

An electronic device comprising:

• a piezoelectric element;
• a vibration plate to which the piezoelectric element is joined for vibration;
• and
• a housing to which the vibration plate is joined, wherein sound is transmitted by bending the vibration plate with the piezoelectric element such that a portion of the vibration plate directly above the piezoelectric element protrudes relative to neighboring portions of the vibration plate in a long side direction of the piezoelectric element and by vibrating a pressed part of a human body that is pressed against the bent vibration plate, and wherein
• the vibration plate includes, in a plan view thereof, a first area including a joining portion with the piezoelectric element and a second area located further away from the joining portion than the first area is, and rigidity in a first area is lower than rigidity in the second area.

An electronic device comprising:

• a piezoelectric element;
• a vibration plate to which the piezoelectric element is joined for vibration;
• and
• a housing to which the vibration plate is joined, wherein
• sound is transmitted by bending the vibration plate with the piezoelectric element such that a portion of the vibration plate directly above the piezoelectric element protrudes relative to neighboring portions of the vibration plate in a long side direction of the piezoelectric element and by vibrating a contacting part of a human body that is in contact with the bent vibration plate, and wherein
• the vibration plate includes a first area including a joining portion with the piezoelectric element, and vibration amplitude of the vibration plate is smaller in a location of the vibration plate that is farther away from the first area.