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Magnetic shield structure for speaker and electronic device including the same

專利號(hào)
US11159891B2
公開日期
2021-10-26
申請人
Samsung Electronics Co., Ltd.(KR Suwon-si)
發(fā)明人
Jungho Kim; Minsoo Kim; Jinwan An
IPC分類
H04R1/02; H04R9/06; H04R9/02; H04R7/16; H04R7/04
技術(shù)領(lǐng)域
speaker,shield,may,electronic,magnetic,or,plate,magnet,be,in
地域: Gyeonggi-do

摘要

Provided is an electronic device. The electronic device may include: a housing including a front plate, a rear plate facing away from the front plate, and a side member surrounding a first space between the front plate and the rear plate; a display panel exposed to an exterior of the electronic device through the front plate and configured to detect a pen input using a magnetic field; a speaker structure disposed between the display panel and the rear plate, and including a first surface facing the display panel, a second surface facing in a direction opposite the display panel, a side surface surrounding a second space between the first surface and the second surface, and a yoke facing the first surface; and a first shield structure made of a ferromagnetic material and disposed on the first surface.

說明書

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.

FIG. 11 is a chart showing a comparison in terms of sound pressure between a speaker including the magnetic shield structure according to one or more embodiments of the instant disclosure and a conventional speaker in the related arts.

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).

權(quán)利要求

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