MASK, AND SKIN CARE APPARATUS COMPRISING SAME

    公开(公告)号:US20220233400A1

    公开(公告)日:2022-07-28

    申请号:US17610216

    申请日:2020-05-06

    Abstract: A mask according to an embodiment comprises: a first substrate disposed on a first base layer; a first wire disposed on the first substrate; a piezoelectric element disposed on the first wire; a second wire disposed on the piezoelectric element; a second substrate disposed on the second wire; a second base layer disposed on the second substrate; and a cavity disposed between the first base layer and the piezoelectric element, wherein the cavity is disposed in a region overlapping the piezoelectric element in a vertical direction.

    ULTRASONIC LINEAR MOTOR
    7.
    发明申请

    公开(公告)号:US20230077537A1

    公开(公告)日:2023-03-16

    申请号:US17798120

    申请日:2020-06-09

    Abstract: An ultrasonic linear motor according to one embodiment is disclosed. The vibrating body includes an elastic body and a first piezoelectric element and a second piezoelectric element which are attached to two surfaces of the elastic body, a first weight and a second weight which are disposed on two side end portions of the vibrating body, a moving shaft which is coupled to a central portion of the vibrating body and moves according to a displacement of each of the piezoelectric elements, and a moving body which is fitted to the moving shaft and moves on the moving shaft.

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