Semiconductor microphone chip
A microphone and semiconductor technology, applied in the field of condenser microphone chips
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[0028] The present invention has many different forms of embodiments, and the accompanying drawing shows a preferred example of the present invention, which will be described in detail.
[0029] As shown in FIG. 1 , it is a condenser microphone chip of the present invention, and its structure includes: a diaphragm 21 , a support 22 , a back pole 23 , and a base 24 from top to bottom. The diaphragm 21 and the back pole 23 are made of conductive materials to form a capacitor structure; the diaphragm 21 is connected to the support 22 through a corrugated suspension beam 25 (see Fig. 2 and Fig. 3 ); the back pole 23 has an acoustic hole 26; the center of the base 24 has The back cavity 27 and the sound hole 26 are located within the range of the back cavity 27 .
[0030] As shown in FIG. 2 , the diaphragm 21 is connected to the frame and the support 22 through the suspension beam 25 , the suspension beam 25 has a corrugated structure, and the diaphragm 21 has a circular structure....
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