Title:
SOUND OUTPUT DEVICE AND DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/048316
Kind Code:
A1
Abstract:
The present invention relates to a sound output device having a slim structure and high efficiency, and a display device comprising same, the sound output device comprising: a base plate of a metal material; an inner magnetic portion positioned at the center of the base plate; a voice coil positioned around the circumference of the inner magnetic portion; a plurality of outer magnetic portions positioned around the circumference of the voice coil; an upper cover positioned above the inner magnetic portion, the voice coil, and the outer magnetic portions; a circular diaphragm positioned around the outer magnetic portions; and a bridge passing through between the plurality of outer magnetic portions and connecting the diaphragm to the voice coil, wherein the inner magnetic portion includes a first inner magnet; an inner plate positioned on the upper surface of the inner magnet; and a second inner magnet positioned on the upper surface of the inner plate, and the outer magnetic portions include a plurality of first outer magnets positioned around the outer circumference of the voice coil; an outer plate positioned on the upper surface of the first outer magnets; and a second outer magnet positioned on the upper surface of the outer plate.
Inventors:
YANG SUNGEUN (KR)
Application Number:
PCT/KR2021/013304
Publication Date:
March 30, 2023
Filing Date:
September 29, 2021
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H04R9/02; H04R7/04; H04R7/16; H04R9/04; H04R9/06
Foreign References:
| JP2001086589A | 2001-03-30 | |||
| KR20210048345A | 2021-05-03 | |||
| KR101201828B1 | 2012-11-15 | |||
| KR20200031033A | 2020-03-23 | |||
| US20100172520A1 | 2010-07-08 |
Attorney, Agent or Firm:
KBK & ASSOCIATES (KR)
Download PDF:
Previous Patent: DENTAL ABUTMENT SYSTEM HAVING CEMENT-FREE CROWN
Next Patent: VACUUM PAD AND VACUUM PAD MANUFACTURED BY ARTIFICIAL INTELLIGENCE
Next Patent: VACUUM PAD AND VACUUM PAD MANUFACTURED BY ARTIFICIAL INTELLIGENCE