US 12,282,603 B2
Tactile presentation panel, tactile presentation touch panel, tactile presentation touch display, and tactile presentation knob
Tae Orita, Tokyo (JP); Takeshi Ono, Tokyo (JP); Takayuki Morioka, Tokyo (JP); and Yuichi Sasaki, Tokyo (JP)
Assigned to MITSUBISHI ELECTRIC CORPORATION, Tokyo (JP)
Appl. No. 17/773,617
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Dec. 5, 2019, PCT No. PCT/JP2019/047605
§ 371(c)(1), (2) Date May 2, 2022,
PCT Pub. No. WO2021/111577, PCT Pub. Date Jun. 10, 2021.
Prior Publication US 2022/0374084 A1, Nov. 24, 2022
Int. Cl. G06F 3/01 (2006.01); G06F 3/0362 (2013.01); G06F 3/039 (2013.01); G06F 3/044 (2006.01)
CPC G06F 3/016 (2013.01) [G06F 3/0362 (2013.01); G06F 3/0393 (2019.05); G06F 3/0446 (2019.05)] 18 Claims
OG exemplary drawing
 
1. A tactile presentation panel in which a tactile presentation knob having a plurality of conductive elastic portions is placed on an operation surface, the tactile presentation panel presenting a tactile sense to a user via the tactile presentation knob, the tactile presentation panel comprising:
a tactile electrode including a plurality of first electrodes and a plurality of second electrodes provided on the operation surface of the tactile presentation panel;
a dielectric layer covering the tactile electrode and having one surface as the operation surface;
a voltage generation circuit that generates a voltage signal having a first frequency to be applied to at least one of the first electrodes located in at least a partial region on the operation surface of the tactile presentation panel, and generates a voltage signal having a second frequency different from the first frequency to be applied to at least one of the second electrodes located in at least a partial region on the operation surface of the tactile presentation panel;
a charge discharge portion that is connected to the tactile electrode; and
a contact detection circuit that detects contact of the user with the tactile presentation knob,
wherein
at least one of the first electrodes and the voltage generation circuit are directly connected while the user is in contact with the tactile presentation knob, at least another one of the first electrodes and the voltage generation circuit are not operatively connected, the at least another one of the first electrodes being operatively connected to the charge discharge portion, and the second electrode and the charge discharge portion are directly connected while the user is in contact with the tactile presentation knob,
the at least one of the first electrodes is operatively connected to the voltage generation circuit and at least part of the conductive elastic portions face each other with the dielectric layer therebetween,
the at least one of the second electrodes is operatively connected to the charge discharge portion and at least part of the conductive elastic portions which does not face the first electrode face each other with the dielectric layer therebetween, and
the charge discharge portion is configured to discharge charges accumulated in the conductive elastic portions, and
a number of the at least one of the second electrodes that are operatively connected to the charge discharge portion is smaller than a number of the at least another one of the second electrodes that are not operatively connected to the charge discharge portion, or a duration of the at least one of the second electrodes being operatively connected to the charge discharge portion is shorter than a duration of the voltage signal having the second frequency being applied to the at least another one of the second electrodes.