The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 25, 2022
Filed:
Aug. 11, 2020
Electronics and Telecommunications Research Institute, Daejeon, KR;
Inwook Hwang, Sejong-si, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
Provided is an apparatus for generating a vibrotactile sensation. The apparatus for generating a vibrotactile sensation includes a light source generating light, a vibration layer generating a vibration by receiving the light, a vibration detection unit disposed adjacent to the vibration layer to detect a vibration signal of the vibration layer, and a control unit connected to the vibration detection unit to determine the vibration of the vibration layer by using the vibration signal. Here, the vibration layer includes a thermo-elastic layer that has a first thermal expansion coefficient and a photo-thermal conversion layer that is disposed on the thermo-elastic layer and has a second thermal expansion coefficient less than the first thermal expansion coefficient.