SPEAKER DIAPHRAGM, SPEAKER USING THE SAME, ELECTRONIC APPARATUS AND DEVICE USING THE SPEAKER

摘要

PROBLEM TO BE SOLVED: To improve a sound pressure level in the upper register regarding a speaker diaphragm to be used for an acoustic apparatus, speaker using the same, electronic apparatus and device using the speaker. SOLUTION: A speaker diaphragm 27 is configured by micro-fibrillation of aromatic polyamide and papermaking, so that rigidity of the diaphragm 27 is improved and a sound pressure level in the upper register of a speaker using the diaphragm 27 can be improved. COPYRIGHT: (C)2007,JPO&INPIT