Film speaker array
A loudspeaker array and film-type technology, applied in the loudspeaker field, can solve the problems of large volume, complicated loudspeaker structure, inconvenient use, etc.
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Embodiment 1
[0025] Please combine Figure 1-Figure 4 , the film-type loudspeaker array in this embodiment includes a piezoelectric electret film 110 , a circuit board assembly 120 and a connector 130 .
[0026] The piezoelectric electret film 110 is a porous polymer film with a thickness ranging from tens to hundreds of microns. like figure 1 and figure 2 As shown, the piezoelectric electret film 110 in this embodiment is square, and 3×3 block electrodes are correspondingly arranged on both sides to form an electrode array 112 . Each pair of block electrodes corresponding to both sides and the piezoelectric electret film between them form a speaker unit together. This embodiment includes 9 speaker units. The piezoelectric electret film 110 is provided with an electrode connection terminal 114 at the edge that is electrically connected to each bulk electrode on one side.
[0027] The porous polymer film deposits positive and negative charges on the upper and lower surfaces of the hol...
Embodiment 2
[0036] like Image 6 and Figure 7 As shown, the film speaker array of this embodiment includes a piezoelectric electret film 210 and a circuit board assembly 220 .
[0037] The piezoelectric electret film 210 is a porous polymer film with a thickness ranging from tens to hundreds of microns. The piezoelectric electret film 210 in this embodiment is square, and 3×3 block electrodes are correspondingly arranged on both sides to form an electrode array 212 . Each pair of block electrodes corresponding to both sides and the piezoelectric electret film between them form a speaker unit together. This embodiment includes 9 speaker units. The piezoelectric electret film 210 is provided with a first electrode connection end 214 and a second electrode connection end 216 at the edge, which are electrically connected to the electrodes on both sides.
[0038]The circuit board assembly 220 of this embodiment is fixed on the blank area of the piezoelectric electret film 210 . The cir...
Embodiment 3
[0041] like Figure 8 and Figure 9 As shown, the film speaker array of this embodiment includes a piezoelectric electret film 310 , a circuit board assembly 320 and a connector 330 .
[0042] The piezoelectric electret film 310 is a porous polymer film with a thickness ranging from tens to hundreds of microns. The piezoelectric electret film 310 in this embodiment is square, and 3×3 block electrodes are correspondingly arranged on both sides to form an electrode array 312 . Each pair of block electrodes corresponding to both sides and the piezoelectric electret film between them form a speaker unit together. This embodiment includes 9 speaker units. The piezoelectric electret film 310 is provided with a first electrode connection end 314 and a second electrode connection end 316 at the edge, which are electrically connected to the electrodes on both sides.
[0043] The circuit board assembly 320 is provided with a speaker circuit (not shown in the figure), a circuit board...
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