Invention Grant
- Patent Title: Tactile sense presentation device, electronic apparatus, and method of driving tactile sense presentation device
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Application No.: US16825445Application Date: 2020-03-20
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Publication No.: US11709549B2Publication Date: 2023-07-25
- Inventor: Hiroshi Haga , Daisuke Sugimoto
- Applicant: TIANMA MICROELECTRONICS CO., LTD.
- Applicant Address: CN Shenzhen
- Assignee: TIANMA MICROELECTRONICS CO., LTD.
- Current Assignee: TIANMA MICROELECTRONICS CO., LTD.
- Current Assignee Address: CN Shenzhen
- Agency: Sughrue Mion, PLLC
- Priority: JP 15064753 2015.03.26 JP 16001986 2016.01.07
- Main IPC: G06F3/01
- IPC: G06F3/01 ; G06F3/042 ; G06F3/04886 ; G06F3/041 ; G06F3/044

Abstract:
A tactile sense presentation device includes a panel that includes a support substrate, a plurality of electrodes, which are formed on the support substrate, extending in a predetermined direction, and an insulating layer covering the plurality of electrodes; and a drive unit that drives the panel, wherein a tactile sense is presented to an operator based on an electrostatic force generated between the electrodes and the operator by the drive unit applying a signal of a voltage to the electrode, a contact face of the insulating layer that is in contact with the operator has a surface roughness Ra of a predetermined range, and the voltage applied to the electrodes corresponding to an area in which the tactile sense is presented to the operator is a voltage corresponding to the surface roughness Ra of the contact face.
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