SCREEN SOUNDER

• US 20140301596A1
• Filed: 04/02/2014
• Published: 10/09/2014
• Est. Priority Date: 04/05/2013
• Status: Active Grant

• Current Assignee: AAC Technologies Pte Limited (AAC Technologies Holdings Inc.)
• Original Assignee: AAC Technologies Pte Limited (AAC Technologies Holdings Inc.)
• Inventors: Wang, Hongxing, Zhang, Lihong
• Granted Patent: US 9,107,006 B2
• Time in Patent Office: Days
• US Class Current: 381/388
• CPC Class Codes: B06B 1/06 operating with piezoelectric effect or with electrostriction piezoelectric or electrostrictive devices per se H10N30/00
• CPC Class Codes: H04R 1/028 associated with devices performing functions other than acoustics, e.g. electric candles
• CPC Class Codes: H04R 17/00 Piezoelectric transducers; Electrostrictive transducers piezoelectric or electrostrictive elements in general H10N30/00; details of piezoelectric or electrostrictive motors, generators or positioners H10N30/00
• CPC Class Codes: H04R 2217/01 Non-planar magnetostrictive, piezoelectric or electrostrictive benders
• CPC Class Codes: H04R 2499/11 Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
• CPC Class Codes: H04R 2499/15 Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops

Abstract

A screen sounder includes a housing having a front case, a screen supported by the front case, a piezoelectric module mounted with the screen for driving the screen to generate sound or converting vibration of the screen into electric energy, an audio signal source electrically connecting to the piezoelectric module for driving the piezoelectric module to vibrate, a rechargeable module electrically connecting to the piezoelectric module for receiving the electric energy, and a switching control unit electrically connecting with the piezoelectric module for switching the electrical connections between the audio signal source, the rechargeable module and the piezoelectric module.

Claims

1. A screen sounder, comprising:

a housing having a front case;

a screen supported by the front case;

a piezoelectric module mounted with the screen for driving the screen to generate sound or converting vibration of the screen into electric energy;

an audio signal source electrically connecting to the piezoelectric module for driving the piezoelectric module to vibrate;

a rechargeable module electrically connecting to the piezoelectric module for receiving the electric energy;

a switching control unit electrically connecting with the piezoelectric module for switching the electrical connections between the audio signal source, the rechargeable module and the piezoelectric module.

2. The screen sounder as described in claim 1, wherein the housing further includes a rear case supported by the front case, the front case including a frame for supporting the screen, a bracket supported by the frame.

3. The screen sounder as described in claim 2, wherein the front case further includes an annular gasket sandwiched between the frame and the bracket.

4. The screen sounder as described in claim 3, wherein the piezoelectric module includes a piezoceramic plate and a connecter mounted on the piezoceramic layer, one end of the connecter fixed on the piezoceramic plate and the other end attached to the screen.

5. The screen sounder as described in claim 4, wherein the piezoceramic plate includes a substrate and a piezoelectric ceramic layer mounted on a side of the substrate.

6. The screen sounder as described in claim 5, wherein two ends of the piezoelectric substrate are supported by two sidewalls of the bracket, respectively.

7. The screen sounder as described in claim 5, wherein one end of the piezoelectric substrate is mounted on the bracket and the other end of the piezoelectric substrate is supported by the connecter, the connecter is located on the central of the screen.

8. The screen sounder as described in claim 6, wherein three connecters are arranged in a row which are substantially perpendicularly to a long central axis direction of the front case.

9. The screen sounder as described in claim 2, wherein the piezoelectric ceramic plate is directly glued to the screen.

10. The screen sounder as described in claim 2, wherein a plate layer serving as a connecter sandwiched between the piezoelectric module and the screen, the shape of the plate layer is substantially identical to the piezoelectric module.

11. A rechargeable handheld device, comprising:

a housing forming a receiving space;

a piezoelectric module accommodated in the receiving space of the housing;

an audio signal source for providing audio signals to the piezoelectric module and driving the piezoelectric module to vibration using piezoelectric effect;

a rechargeable module capable of being electrically connected to the piezoelectric module for receiving electric currents from the piezoelectric module using conversed piezoelectric effect;

a switching control unit for switching the electrical connections between the piezoelectric module, the rechargeable module, and the audio signal source.