Back pole plate and microphone

• Main Authors: CUI GUANGCHAO, QIU GUANXUN, LIU SONG
• Format: Patent
• Language: Chinese; English
• Published: 05.11.2021
• Subjects: DEAF-AID SETS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS; MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICALDEVICES; MICROSTRUCTURAL TECHNOLOGY; PERFORMING OPERATIONS; PUBLIC ADDRESS SYSTEMS; TRANSPORTING

The invention discloses a back polar plate and a microphone. The back polar plate comprises a conducting layer and a first insulating layer, and the conducting layer and the first insulating layer are arranged in a stacked mode; a plurality of through holes and a central hole, wherein the plurality of through holes and the central hole simultaneously penetrate through the conductive layer and the first insulating layer; the thickness of the first insulating layer becomes thinner in the direction from the edge to the center hole. When the back polar plate is applied to the microphone, the reliability of the microphone is improved, and the electroacoustic performance of the microphone is ensured. 本发明公开了一种背极板和麦克风。所述背极板包括导电层和第一绝缘层，所述导电层和所述第一绝缘层层叠设置；多个通孔和一个中心孔，多个所述通孔和所述中心孔同时贯穿所述导电层和所述第一绝缘层；所述第一绝缘层的厚度沿着自边缘向所述中心孔的方向变薄。本发明中的背极板被应用于麦克风时，既提升了麦克风的可靠性，又保证了麦克风的电声性能。