Patent Number: 6,169,809

Title: Visual display means incorporating loudspeakers

Abstract: A visual display unit having a display screen, a housing in which the display screen is mounted, and a loudspeaker in the housing comprising a member capable of sustaining and propagating input vibrational energy by a plurality of resonant bending wave modes in an operative area, the frequencies of the resonant bending wave modes being interleaved so that resonant bending wave modes are evenly distributed. A transducer is mounted wholly and exclusively on the operative area of the member at a preferential location which substantially maximizes acoustic coupling to the resonant bending wave modes in the member, the resonant bending wave modes in turn producing an acoustic output.

Inventors: Azima; Henry (Cambridge, GB), Colloms; Martin (London, GB), Harris; Neil (Great Shelford, GB)

Assignee: New Transducers Limited

International Classification: G07F 9/02 (20060101); H04R 5/02 (20060101); H04R 7/04 (20060101); H04R 1/24 (20060101); H04R 7/00 (20060101); H04R 1/22 (20060101); H04R 025/00 ()

Expiration Date: 01/02/2018