音響発生器、音響発生装置及び電子機器

Title:

音響発生器、音響発生装置及び電子機器

Document Type and Number:

Japanese Patent JP5627799

Kind Code:

B2

Abstract:

The problem is to reduce variations of sound pressure in the sound pressure frequency characteristics. To solve the problem, an acoustic generator includes a film (3) that is a supporting plate; a frame member (5) that is provided on the outer circumference of the film (3); a piezoelectric element (1) that is provided on the film (3) within a frame of the frame member (5); and a resin layer (20) that is provided on the film (3) within the frame of the frame member (5), and the resin layer (20) including an air bubble (8). By the air bubble (8), a decrease in the sound pressure is prevented, peaks and dips in the frequency characteristics of sound pressure are reduced, and high-quality sounds are generated.

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