Patent ID: 7726441
Filing Date: 2010-06-01
Classification: H04R

Abstract:
1. An acoustic vibratory plate, comprising: at least first, second and third laminated bodies layered, wherein said first and third laminated bodies are formed of a biaxially stretched polyester (PET) film, said second laminated body is formed of a polyester-based adhesive for laminates composed of a polyester resin (LA) and is a polymer material higher than the polymer material forming said first and third laminated bodies in dynamic internal loss, a thickness of each of the first and third laminated bodies is greater than a thickness of the second laminated body, said first, second, and third laminated bodies generate a light interference phenomenon and exert a decorative function when reflecting light, and a ratio ξ of a thickness of the LA to a thickness of the PET film is defined by the equation: