# US 2018/0024685 A1 · Touch-sensitive input apparatus, electronic apparatus and touch-sensitive input method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0024685 A1 - Document ID: US20180024685A1 - Status: Published application - Kind: A1 - Application number: 15/650,247 - Filed: 2017-07-14 - Published: 2018-01-25 - Earliest claimed: 2016-07-21 - Assignees: Pegatron Corporation - Applicants: Pegatron Corporation - Inventors: YU-FENG KUO - Web page: https://patentgrep.com/patent/US20180024685A1 ## CPC - G06F 3/016: {Input arrangements with force or tactile feedback as computer generated output to the user} - G06F 3/041: Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means - G06F 2203/04105: Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract A touch-sensitive input apparatus includes an input device, at least one piezoelectric device and a circuit board. The piezoelectric device contacts the input device and receives a pressure from the input device to deform and generate an output voltage. The circuit board electrically connects with the piezoelectric device and includes a processing module and a power supply module. The processing module electrically connects with the piezoelectric device and receives the output voltage, the processing module calculates a pressure value corresponding to the pressure according the output voltage, and outputs an execution event when the pressure value exceeding a predetermined pressure value. The power supply module is electrically connected with the processing module and the piezoelectric device and outputs an alternate current to the piezoelectric device according to the execution event, so that the piezoelectric device generates tensile deformations and compression deformations alternately to drive the input device to generate vibration. ## Claims ### Claim 1 A touch-sensitive input apparatus, comprising: an input device; at least one piezoelectric device contacting the input device, the at least one piezoelectric device being capable of receiving a pressure from the input device to deform and generate an output voltage; and a circuit board electrically connected with the at least one piezoelectric device, the circuit board comprising: a processing module electrically connected with the at least one piezoelectric device and receiving the output voltage, the processing module calculating a pressure value corresponding to the pressure according the output voltage, and outputting an execution event when the pressure value exceeding a predetermined pressure value; and a power supply module electrically connected with the processing module and the at least one piezoelectric device, the power supply module outputting an alternate current to the at least one piezoelectric device according to the execution event, so that the at least one piezoelectric device generates tensile deformations and compression deformations alternately to drive the input device to generate vibration. ### Claim 2 (depends on 1) The touch-sensitive input apparatus according to claim 1, wherein the execution event comprises opening an application program. ### Claim 3 (depends on 1) The touch-sensitive input apparatus according to claim 1, wherein the execution event comprises controlling an output voltage and an output time interval of the alternate current to control a vibration amplitude and a vibration frequency of the piezoelectric device. ### Claim 4 (depends on 1) The touch-sensitive input apparatus according to claim 1, wherein the piezoelectric device comprises a piezoelectric sheet, at least two electrodes and a metal sheet, the piezoelectric sheet is attached to the metal sheet, and the at least two electrodes are disposed at the piezoelectric sheet and the metal sheet, respectively. ### Claim 5 (depends on 4) The touch-sensitive input apparatus according to claim 4, wherein the piezoelectric device has two electrodes, the two electrodes are disposed at the piezoelectric sheet and the metal sheet, respectively, and the processing module and the power supply module are electrically connected with the two electrodes. ### Claim 6 (depends on 4) The touch-sensitive input apparatus according to claim 4, wherein the piezoelectric device has four electrodes, the four electrodes includes two first electrodes and two second electrodes, the two first electrodes are disposed at the piezoelectric sheet and the metal sheet, respectively, the two second electrodes are disposed at the piezoelectric sheet and the metal sheet, respectively, the processing module is electrically connected with the two first electrodes, and the power supply module is electrically connected with the two second electrodes. ### Claim 7 (depends on 4) The touch-sensitive input apparatus according to claim 4, wherein the polarity of the at least one electrode disposed at the piezoelectric sheet and the polarity of the at least one electrode disposed at the metal sheet are positive and negative, respectively. ### Claim 8 (depends on 1) The touch-sensitive input apparatus according to claim 1, wherein the piezoelectric device comprises a free end and a fixed end, the free end is movably connected with the input device, the fixed end is fixed at the circuit board, and the free end of the piezoelectric device is capable of receiving the pressure from the input device whereby the piezoelectric device is compressively deformed. ### Claim 9 (depends on 8) The touch-sensitive input apparatus according to claim 8, wherein the input device further comprises a connecting member, the free end of the piezoelectric device is movably connected with the connecting member, the circuit board further comprises a fixing member, and the fixed end of the piezoelectric device is fixed at the fixing member. ### Claim 10 (depends on 8) The touch-sensitive input apparatus according to claim 8, wherein the piezoelectric device further comprises a weight member disposed between the free end and the fixed end. ### Claim 11 (depends on 1) The touch-sensitive input apparatus according to claim 1, wherein the piezoelectric device comprises a free end and a fixed end, the fixed end is fixed at the input device, the free end is disposed opposite to the fixed end, the circuit board is connected between the free end and the fixed end, and the fixed end of the piezoelectric device is capable of receiving the pressure from the input device whereby the piezoelectric device is compressively deformed. ### Claim 12 (depends on 11) The touch-sensitive input apparatus according to claim 11, wherein the circuit board further comprises a connecting member, the connecting member is connected with the piezoelectric device, and the connecting member is connected between the free end and the fixed end, the input device further comprises a fixing member, the fixed end of the piezoelectric device is fixed at the fixing member. ### Claim 13 (depends on 12) The touch-sensitive input apparatus according to claim 12, wherein the piezoelectric device further comprises a weight member disposed at the free end of the piezoelectric device. ### Claim 14 (depends on 1) The touch-sensitive input apparatus according to claim 1, wherein the input device is a touchpad or a touch panel. ### Claim 15 An electronic apparatus, comprising: a touch-sensitive input apparatus, comprising: an input device, at least one piezoelectric device contacting the input device, the at least one piezoelectric device being capable of receiving a pressure from the input device to deform and generate an output voltage; and a circuit board electrically connected with the at least one piezoelectric device, the circuit board comprising: a processing module electrically connected with the at least one piezoelectric device and receiving the output voltage, the processing module calculating a pressure value corresponding to the pressure according the output voltage, and outputting an execution event when the pressure value exceeding a predetermined pressure value; and a power supply module electrically connected with the processing module and the at least one piezoelectric device, the power supply module outputting an alternate current to the at least one piezoelectric device according to the execution event, so that the at least one piezoelectric device generates tensile deformations and compression deformations alternately to drive the input device to generate vibration. ### Claim 16 (depends on 15) The electronic apparatus according to claim 15, wherein the execution event comprises opening an application program. ### Claim 17 (depends on 15) The electronic apparatus according to claim 15, wherein the execution event comprises controlling an output voltage and an output time interval of the alternate current to control a vibration amplitude and a vibration frequency of the piezoelectric device. ### Claim 18 (depends on 15) The electronic apparatus according to claim 15, wherein the piezoelectric device comprises a piezoelectric sheet, at least two electrodes and a metal sheet, the piezoelectric sheet is attached to the metal sheet, and the at least two electrodes are disposed at the piezoelectric sheet and the metal sheet, respectively. ### Claim 19 (depends on 18) The electronic apparatus according to claim 18, wherein the piezoelectric device has two electrodes, the two electrodes are disposed at the piezoelectric sheet and the metal sheet, respectively, and the processing module and the power supply module are electrically connected with the two electrodes. ### Claim 20 (depends on 18) The electronic apparatus according to claim 18, wherein the piezoelectric device has four electrodes, the four electrodes includes two first electrodes and two second electrodes, the two first electrodes are disposed at the piezoelectric sheet and the metal sheet, respectively, the two second electrodes are disposed at the piezoelectric sheet and the metal sheet, respectively, the processing module is electrically connected with the two first electrodes, and the power supply module is electrically connected with the two second electrodes. ### Claim 21 (depends on 18) The electronic apparatus according to claim 18, wherein the polarity of the at least one electrode disposed at the piezoelectric sheet and the polarity of the at least one electrode disposed at the metal sheet are positive and negative, respectively. ### Claim 22 (depends on 15) The electronic apparatus according to claim 15, wherein the piezoelectric device comprises a free end and a fixed end, the free end is movably connected with the input device, the fixed end is fixed at the circuit board, and the free end of the piezoelectric device is capable of receiving the pressure from the input device whereby the piezoelectric device is compressively deformed. ### Claim 23 (depends on 22) The electronic apparatus according to claim 22, wherein the input device further comprises a connecting member, the free end of the piezoelectric device is movably connected with the connecting member, the circuit board further comprises a fixing member, and the fixed end of the piezoelectric device is fixed at the fixing member. ### Claim 24 (depends on 23) The electronic apparatus according to claim 23, wherein the piezoelectric device further comprises a weight member disposed between the free end and the fixed end. ### Claim 25 (depends on 15) The electronic apparatus according to claim 15, wherein the piezoelectric device comprises a free end and a fixed end, the fixed end is fixed at the input device, the free end is disposed opposite to the fixed end, the circuit board is connected between the free end and the fixed end, and the fixed end of the piezoelectric device is capable of receiving the pressure from the input device whereby the piezoelectric device is compressively deformed. ### Claim 26 (depends on 25) The electronic apparatus according to claim 25, wherein the circuit board further comprises a connecting member, the connecting member is connected with the piezoelectric device, and the connecting member is connected between the free end and the fixed end, the input device further comprises a fixing member, the fixed end of the piezoelectric device is fixed at the fixing member. ### Claim 27 (depends on 26) The electronic apparatus according to claim 26, wherein the piezoelectric device further comprises a weight member disposed at the free end of the piezoelectric device. ### Claim 28 (depends on 15) The electronic apparatus according to claim 15, wherein the input device is a touchpad or a touch panel. ### Claim 29 A touch-sensitive input method for a touch-sensitive input apparatus, the touch-sensitive input apparatus comprising an input device, at least one piezoelectric device and a circuit board, one end of the piezoelectric device contacting the input device, another end being electrically connected with the circuit board, the circuit board comprising a processing module and a power supply module, the touch-sensitive input method comprising the steps of: the piezoelectric device receiving a pressure from the input device to deform and generate an output voltage; the processing module receiving the output voltage and calculating a pressure value corresponding to the pressure according the output voltage; the processing module outputting an execution event when the pressure value exceeding a predetermined pressure value; the power supply module outputting an alternate current to the piezoelectric device according to the execution event; and the piezoelectric device generating tensile deformations and compression deformations alternately to drive the input device to generate vibration.