The first surface of the speaker housing may face the display 512 or the electromagnetic induction panel 513, the second surface may face in the opposite direction of the display 512 (e.g., rear plate 540), and the frame 509 may surround the space between the first surface and the second surface. The first magnetic shield structure 901 may be disposed on the first surface of the speaker housing. The first magnetic shield structure 901 disposed on the first surface of the speaker housing may face the speaker yoke 507. The diaphragm 555 may be disposed on the second surface of the speaker housing.
The speaker housing may be a speaker structure placed in the space between the display 512 (or, electromagnetic induction panel 513) and the rear plate 540.
When the conductor length (voice coil) and the current (current flowing through the coil) are the same, the magnetic shield structure of the instant disclosure can increase the magnetic flux density.
The increase in magnetic flux density can increase the sound pressure according to the equation F=BiL (where F is the force, B is the magnetic flux, i is the current, and L is the conductor length).