Entrant sound film and electronic device, including entrant sound film

摘要

A kind of channel that entrant sound diaphragm (1) offer allows sound to pass through, and prevent foreign substance, entrant sound diaphragm (1) includes on supporting member (12) and resin perforated membrane (11), which simultaneously contains polytetrafluoroethylene (PTFE) as main component. Supporting member (12) is that adhesive-bonded fabric includes elastomer. It include elastomer since supporting element (12) is adhesive-bonded fabric, the entrant sound diaphragm of insertion loss can reduce sound 3000.