Planar speaker

Details Planar speaker Planar speaker

2007-10-16

2007-10-16

Le, Huyen (Department: 2615)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Driven diverse static structure

C381S408000, C381S431000

Reexamination Certificate

active

10504850

ABSTRACT:
The present invention provides a planer acoustic transducer including a vibrating diaphragm including a spiral voice coil provided on both surfaces or on one surface of an insulating base film; and a permanent magnet corresponding to the voice coil, wherein, in the vibrating diaphragm, the spiral voice coil is formed by applying a wire conductor, in a coil pattern, onto a sheet-like substrate having an adhesive layer on at least one surface thereof. Alternatively, at least a portion of the vibrating diaphragm, which portion corresponds to the loop of a first or second vibration mode, is reinforced with a rigidity-imparting member; the substrate of the vibrating diaphragm is formed of a resin foam; or the voice coil is formed three-dimensionally.

REFERENCES:
patent: 4471173 (1984-09-01), Winey
patent: 5003610 (1991-03-01), Adachi et al.
patent: 5627903 (1997-05-01), Porrazzo et al.
patent: 51-26523 (1976-03-01), None
patent: 1-144799 (1989-06-01), None
patent: 8-140185 (1996-05-01), None
patent: 2001-333493 (2001-11-01), None

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