AUDIO PLAYING MODULE AND METHOD OF THE SAME

• US 20090154732A1
• Filed: 12/12/2008
• Published: 06/18/2009
• Est. Priority Date: 12/18/2007
• Status: Active Grant

• Current Assignee: Princeton Technology Corporation
• Original Assignee: Princeton Technology Corporation
• Inventors: WANG, Ko-Kang
• Granted Patent: US 8,238,585 B2
• Time in Patent Office: Days
• US Class Current: 381/120
• CPC Class Codes: H03F 9/00 Magnetic amplifiers
• 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 2499/15 Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops
• CPC Class Codes: H04R 3/04 for correcting frequency response
• CPC Class Codes: H04R 3/08 of electromagnetic transducers
• CPC Class Codes: H04R 7/04 Plane diaphragms
• CPC Class Codes: H04R 9/047 in which the windings of the moving coil lay in the same plane

Abstract

An audio module used for a display device is disclosed. The display device has a display substrate. The audio module has a filter, an amplifier, and at least one output unit. The filter receives and filters an audio signal to generate a filtered signal. The amplifier is coupled to the filter and amplifies the filtered signal to generate an amplified signal. At least one output unit is coupled to the amplifier and plays the amplified signal in a predetermined way.

Claims

1. An audio module used for a display device with a display substrate, said audio module comprising:

a filter for receiving and filtering an audio signal to generate a filtered signal;

an amplifier coupled to said filter, which amplifies said filtered signal to generate an amplified signal; and

at least one output unit coupled to the amplifier to output the amplified signal in a predetermined way.

2. The audio module as claimed in claim 1, wherein said filter performs equalization filtering to said audio signal to generate said filtered signal.

3. The audio module as claimed in claim 1, wherein the predetermined way is a magnetic way, and said at least output unit outputs said amplified signal in the magnetic way.

4. The audio module as claimed in claim 3, wherein said audio module comprises a plurality of coils disposed on said display substrate, and said at least one output unit includes a plurality of magnetic device kits;

wherein said magnetic device kits comprises a first magnetic device kit and a second magnetic device kit, and said first and second magnetic device kits are respectively disposed on both sides of said display substrate; and

wherein a first magnetic polarity of each magnetic device in said first magnetic device kit is opposite to a second magnetic polarity of each magnetic device in said second magnetic device kit, wherein each of said magnetic devices is a magnet.

5. The audio module as claimed in claim 1, wherein said predetermined way is a wave way, and said at least one output unit outputs said amplified signal in the wave way.

6. The audio module as claimed in claim 5, wherein said at least one output unit is a piezoelectric device, and said piezoelectric device is disposed on said display substrate and used to generate a wave, wherein said piezoelectric device is an acoustic speaker.

7. The audio module as claimed in claim 1, wherein said predetermined way is a static-electric way, and said at least one output unit outputs said amplified signal in the static-electric way.

8. The audio module as claimed in claim 7, wherein the audio module comprises a bias voltage source disposed on said display substrate, and said at least one output unit includes a plurality of electrode device kits, wherein said electrode device kits includes a first electrode device and a second electrode device, and said first and second electrode device kits are respectively disposed on both sides of said display substrate, wherein each of said electrode device is an electrode plate.

9. The audio module as claimed in claim 1, wherein said display device is a thin film display or an electronic ink display.

10. An audio output method used for a display device with a display substrate, said audio output method comprising:

(a) receiving and filtering an audio signal to generate a filtered signal;

(b) amplifying said filtered signal to generate an amplified signal; and

(c) outputting said amplified signal in a predetermined way.

11. The audio output method as claimed in claim 10, wherein the step (a) comprises performing equalization filtering to said audio signal to generate said filtered signal.

12. The audio output method as claimed in claim 10, wherein in the step (c), said predetermined way is a magnetic way, and said amplified signal is outputted in the magnetic way.

13. The audio output method as claimed in claim 12, wherein the step (c) comprises:

(c1) disposing a plurality of coils on said display substrate;

(c2) disposing a first magnetic device kit and a second magnetic device kit on both sides of said display substrate, wherein a first magnetic polarity of each magnetic device in said first magnetic device kit is opposite to a second magnetic polarity of each magnetic device in said second magnetic device kit; and

(c3) generating a magnetic force by said first and second magnetic device kits to play said amplified signal.

14. The audio output method as claimed in claim 13, wherein each of said magnetic devices is a magnet.

15. The audio output method as claimed in claim 10, wherein in the step (c), the predetermined way is a wave way, and the amplified signal is played in the wave way.

16. The audio output method as claimed in claim 15, wherein the step (c) comprises:

(c4) disposing a piezoelectric device on said display substrate; and

(c5) generating a wave by said piezoelectric device to output said amplified signal.

17. The audio output method as claimed in claim 16, wherein said piezoelectric device is an acoustic speaker.

18. The audio output method as claimed in claim 10, wherein said predetermined way is a static-electric way, and said amplified signal is outputted in the static-electric way.

19. The audio output method as claimed in claim 18, wherein the step (c) comprises:

(c6) disposing a bias voltage source on said display substrate;

(c7) disposing a first magnetic device kit and a second magnetic device kit on both sides of said display substrate; and

(c8) outputting said amplified signal for generating static-electricity through said first and second electrode devices.

20. The audio output method as claimed in claim 19, wherein each of said first magnetic device kit and said second magnetic device kit is electrode plate.