ELECTRONIC APPARATUS COMPRISING PIEZOELECTRIC MODULE

    公开(公告)号:US20240029469A1

    公开(公告)日:2024-01-25

    申请号:US18376401

    申请日:2023-10-03

    发明人: Bongjae RHEE Suna KIM

    摘要: An electronic apparatus according to an embodiment comprises: a housing; and a piezoelectric module including a first region that detects biometric information by using ultrasonic waves and a second region that provides haptic feedback, wherein the piezoelectric module includes: a first electrode layer and a second electrode layer facing each other; and a piezoelectric layer which is positioned between the first electrode layer and the second electrode layer, at least one portion of the piezoelectric layer positioned in the first region of the piezoelectric module may vibrate in a first frequency band to emit the ultrasonic waves, and at least one portion of the piezoelectric layer positioned in the second region of the piezoelectric module may vibrate in a second frequency band lower than the first frequency hand.

    PIEZOELECTRIC VIBRATING PIECE, PIEZOELECTRIC VIBRATOR, AND OSCILLATOR

    公开(公告)号:US20240313742A1

    公开(公告)日:2024-09-19

    申请号:US18600043

    申请日:2024-03-08

    摘要: A decrease in vibration efficiency due to size reduction of a tuning-fork type piezoelectric vibrating piece is prevented. A piezoelectric vibrating piece includes a base portion, and a pair of vibrating arm portions extending in parallel from the base portion. Each of the vibrating arm portions includes an arm portion extending from the base portion, and a head portion connected to a distal end of the arm portion and having a width larger than that of the arm portion. The piezoelectric vibrating piece satisfies the following relation: 0.13×1012≤Vh(Lh2+Wh2)≤0.39×1012, where Lh [μm] is a length of the head portion, Wh [μm] is a width of the head portion, and Vh [μm3] is a volume of the head portion.