SPEAKER DIAPHRAGM, SPEAKER DUST CAP, SPEAKER FRAME, SPEAKER USING SAID PARTS, AND ELECTRONIC EQUIPMENT AND DEVICE USING SAID SPEAKER

摘要

Each of a speaker diaphragm, a dust cap, and a frame includes a resin and a plant opal that is extracted from a bamboo leaf, and is formed by injection molding or sheet molding. The configuration can enhance stiffness of each of the diaphragm, the dust cap, and the frame and implement high performance.