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公开(公告)号：US11533003B2
公开(公告)日：2022-12-20
申请号：US17237653
申请日：2021-04-22
Inventor： Hanbit Jin , Hye Jin Kim , Yun-Jeong Kim , YuLim Min , Wooseup Youm , JoonMin Lee , Chan-Hwa Hong
Abstract: The present disclosure relates to a piezoelectric device, and more particularly, to a piezoelectric device including: a piezoelectric actuator; a displacement transmission structure disposed on the piezoelectric actuator; and a displacement amplification structure disposed between the piezoelectric actuator and the displacement transmission structure. Here, the displacement amplification structure includes: a first displacement amplification structure and a second displacement amplification structure, which cross each other; and a fixing pin that passes through the first displacement amplification structure and the second displacement amplification structure to connect the first displacement amplification structure and the second displacement amplification structure. Also, each of one end of the first displacement amplification structure and one end of the second displacement amplification structure may be fixed on the piezoelectric actuator.
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公开(公告)号：US11509996B2
公开(公告)日：2022-11-22
申请号：US17328528
申请日：2021-05-24
Inventor： Hye Jin Kim , JoonMin Lee , Yun-Jeong Kim , YuLim Min , Wooseup Youm , Hanbit Jin , Chan-Hwa Hong
Abstract: The present disclosure relates to a device for playing an acoustic sound and a touch sensation, and more particularly, to a device for emitting a sound to a front surface of a speaker and playing a touch sensation feedback to a rear surface of the speaker through a driving modulation using two or more speakers while simultaneously concentrating an acoustic pressure generated according to a vibration of a membrane of the speaker to a surface of a module through a movement pipe when an audio signal is applied.
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