US 12,013,982 B2
Tactile sensation presentation panel, tactile sensation presentation touch panel, and tactile sensation presentation touch display
Tae Orita, Tokyo (JP); Takeshi Ono, Tokyo (JP); Takayuki Morioka, Tokyo (JP); Mikio Araki, Tokyo (JP); and Mitsuru Sakai, Tokyo (JP)
Assigned to MITSUBISHI ELECTRIC CORPORATION, Tokyo (JP)
Appl. No. 17/634,561
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Jul. 30, 2020, PCT No. PCT/JP2020/029246
§ 371(c)(1), (2) Date Feb. 11, 2022,
PCT Pub. No. WO2021/059739, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 2019-175090 (JP), filed on Sep. 26, 2019.
Prior Publication US 2022/0276712 A1, Sep. 1, 2022
Int. Cl. G06F 3/045 (2006.01); G06F 3/01 (2006.01); G06F 3/041 (2006.01); G06F 3/044 (2006.01)
CPC G06F 3/016 (2013.01) [G06F 3/0412 (2013.01); G06F 3/04144 (2019.05); G06F 3/0444 (2019.05); G06F 3/0446 (2019.05); G06F 3/045 (2013.01); G06F 2203/04112 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A tactile sensation presentation panel that provides tactile sensation to a pointer by a user, the tactile sensation presentation panel comprising:
a transparent insulation substrate;
a tactile sensation electrode including a plurality of first electrodes and a plurality of second electrodes alternately disposed on the transparent insulation substrate at intervals;
a tactile sensation presentation screen including a dielectric layer covering the tactile sensation electrode; and
a voltage supply circuit configured to apply a first voltage signal having a first frequency to the plurality of first electrodes located in at least a partial region of the transparent insulation substrate, and apply a second voltage signal having a second frequency different from the first frequency to the plurality of second electrodes located in the at least partial region of the transparent insulation substrate, wherein
the first and second voltage signals are respectively applied to the plurality of first electrodes and the plurality of second electrodes so that tactile sensation is provided to the pointer,
the voltage supply circuit includes
a capacitance detection circuit configured to calculate first electrostatic capacitance formed between the tactile sensation electrode and the pointer, and
an adjustment circuit configured to adjust an amplitude voltage and frequency of the first and second voltage signals, based on the first electrostatic capacitance calculated in the capacitance detection circuit.