公开(公告)号：US20220362100A1

公开(公告)日：2022-11-17

申请号：US17761245

申请日：2020-09-01

Applicant: LG INNOTEK CO., LTD.

Inventor： Beom Sun HONG ,  Hae Rok SON ,  Gyu Lin LEE ,  Min Seok OH ,  Mi Sun LEE

IPC: A61H23/02

Abstract: A mask according to an embodiment comprises: a body having a shape corresponding to a user's face; a first recess disposed on one surface of the body, opposite to the user's face; and a piezoelectric part disposed in the first recess, wherein the first recess has a shape recessed outward from the one surface of the body and is disposed in a region corresponding to at least one of the user's brow region and eye rim regions, and the piezoelectric unit protrudes beyond the one surface toward the user.

公开(公告)号：US20220312940A1

公开(公告)日：2022-10-06

申请号：US17616264

申请日：2020-05-29

Applicant: LG INNOTEK CO., LTD.

Inventor： Beom Sun HONG ,  Hae Rok SON ,  Joon Jae OH ,  Gyu Lin LEE

IPC: A45D44/00 ,  B06B1/02 ,  B06B1/06 ,  A61N7/02

Abstract: A mask, according to an embodiment, comprises: a first wiring disposed on a first base layer; a piezoelectric element disposed on the first wiring; a second wiring disposed on the piezoelectric element; a second base layer disposed on the second wiring; a protective layer disposed between the first and second base layers and surrounding the first wire, the second wire, and the piezoelectric element; and a control unit which controls a driving frequency of the piezoelectric element. The control unit controls the driving frequency of the piezoelectric element in a frequency band defined as a first range, and the temperature of the piezoelectric element changes by means of the control of the driving frequency of the control unit.