Electronic device

Patent metadata

Field	Value
Publication number	US-9363591-B2
Application number	US-201314361949-A
Country	US
Kind code	B2
Filing date	May 20, 2013
Priority date	May 21, 2012
Publication date	Jun 7, 2016
Grant date	Jun 7, 2016

Abstract

An electronic device is provided with a housing, a piezoelectric element, and a panel, which is attached to the housing and has a contact area contacting a part of human body, configured to vibrate by the piezoelectric element to generate a vibration sound to be transmitted by vibrating the part of human body, such that pressure from inside of the housing at the contact area of the panel is smaller than pressure from inside of the housing at different area from the contact area. Thereby the sound pressure property is improved, and thus the electronic device preferably transmits air conduction sound and vibration sound.

First claim

The invention claimed is:

1. An electronic device comprising:
a housing;
a piezoelectric element;
a panel, which is attached to the housing and has a contact area contacting a part of human body, configured to vibrate by the piezoelectric element to generate a vibration sound to be transmitted by vibrating the part of human body; and
a support or a joining member within the housing, wherein
the support or joining member is provided so that pressure from an inside of the housing at the contact area of the panel is smaller than a second pressure from the inside of the housing at a different area from the contact area.

2. The electronic device according to claim 1 , wherein the panel constitutes a portion or an entirety of any one of a display panel, an input panel, a cover panel and a lid that allows for removal of a rechargeable battery.

3. The electronic device according to claim 2 wherein the panel constitutes a display panel, wherein the piezoelectric element is disposed outside of a display region for a display function.

4. The electronic device according to claim 1 , wherein the panel further generates air-conduction sound.

Assignees

• Kyocera Corp

Inventors

• Ozasa Kenichi
• Mizuno Hayato
• Yahagi Hiroto
• Nagoshi Keiichi
• Zaima Tsutomu
• Kanayama Koutatsu
• Nakamura Tomoaki
• Tomioka Hideo
• Masunaga Takuji
• Inagaki Tomohiro

Classifications

• H04R7/045 Primary

  using the distributed mode principle, i.e. whereby the acoustic radiation is emanated from uniformly distributed free bending wave vibration induced in a stiff panel and not from pistonic motion · CPC title

• H04R2400/03

  Transducers capable of generating both sound as well as tactile vibration, e.g. as used in cellular phones · CPC title

• H04R2440/07

  Loudspeakers using bending wave resonance and pistonic motion to generate sound · CPC title

• H04R17/00

  Piezoelectric transducers; Electrostrictive transducers (piezoelectric or electrostrictive elements in general H10N30/00; details of piezoelectric or electrostrictive motors, generators or positioners {H10N30/00}) · CPC title

• H04M1/03

  Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets · CPC title