# US 10,455,068 B2 · Electronic device and method for controlling display using piezoelectric element > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,455,068 B2 - Document ID: US10455068B2 - Status: Granted - Kind: B2 - Application number: 15/679,066 - Filed: 2017-08-16 - Published: 2018-02-22 - Granted: 2019-10-22 - Earliest claimed: 2016-08-16 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Je Heon Park; Yong Jun Son; Soo Pyoung Park; Ji Hyun Park; Ju Yeong Lee - Web page: https://patentgrep.com/patent/US10455068B2 ## CPC - H04M 1/22: Illumination; Arrangements for improving the visibility of characters on dials - H04M 1/0266: {for a display module assembly} - H04M 1/03: Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets - H04R 7/10: comprising superposed layers in contact - H04M 2201/38: Displays - H04R 17/00: Piezoelectric transducers; Electrostrictive transducers (piezoelectric or electrostrictive elements in general H10N30/00; details of piezoelectric or electrostrictive motors, generators or positioners {H10N30/00}) - H04R 2499/11: Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's - H04R 2499/15: Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops - H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08) - H04R: LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS (producing sounds with frequency not determined by supply frequency G10K) ## Abstract An electronic device includes a display, a vibration element positioned under the display, a microphone, and a processor electrically connected to the display, the vibration element, and the microphone. The processor is configured to allow the vibration element to vibrate the display such that the display outputs a first signal having a first waveform. The electronic device obtains a second signal having a second waveform through the microphone in response to the output of the first signal. In addition, the processor controls the display based on a result of comparing the first waveform and the second waveform. ## Claims ### Claim 1 An electronic device comprising: a display; a vibration element positioned under the display; a microphone; and a processor electrically connected to the display, the vibration element, and the microphone, wherein the processor is configured to: allow the vibration element to vibrate the display such that the display outputs a first signal having a first waveform; obtain a second signal having a second waveform through the microphone in response to the output first signal; turn off the display based on a result obtained by comparing the first waveform and the second waveform which indicates that an approaching object is within a predefined distance; allow the vibration element to vibrate the display at a first frequency band such that the display outputs the first signal; and allow the vibration element to vibrate the display at a second frequency band such that the display outputs sound, wherein the first signal is an ultrasonic wave, wherein the second signal is a signal that corresponds to the first signal reflected and received from an object, and wherein a minimum value of the first frequency band is larger than a maximum value of the second frequency band. ### Claim 2 (depends on 1) The electronic device of claim 1, further comprising: a communication circuit configured to receive a call from an external terminal, wherein the processor is configured to: allow the vibration element to vibrate the display at the second frequency band in response to receiving the call. ### Claim 3 (depends on 1) The electronic device of claim 1, wherein the processor is configured to: allow the vibration element to vibrate the display at the first frequency band for a predefined period. ### Claim 4 (depends on 1) The electronic device of claim 1, wherein the processor applies a voltage to the vibration element to vibrate the vibration element. ### Claim 5 (depends on 1) The electronic device of claim 1, wherein the processor is configured to: control an ON/OFF of the display based on a ratio of an area of the second waveform to an area of the first waveform. ### Claim 6 (depends on 1) The electronic device of claim 1, wherein the processor is configured to: control an ON/OFF of the display based on a ratio of an amplitude of the second waveform to an amplitude of the first waveform. ### Claim 7 (depends on 1) The electronic device of claim 1, wherein the processor is configured to: control an ON/OFF of the display based on a ratio of a frequency of the second waveform to a frequency of the first waveform, wherein the frequency of the first waveform is in the first frequency band. ### Claim 8 (depends on 1) The electronic device of claim 1, further comprising: an adhesive film interposed between the vibration element and the display. ### Claim 9 A method for controlling a display, the method comprising: allowing a vibration element positioned under the display to vibrate the display such that the display outputs a first signal having a first waveform; obtaining a second signal having a second waveform through a microphone in response to the output first signal; turning off the display based on a result obtained by comparing the first waveform and the second waveform which indicates that an approaching object is within a predefined distance; allowing the vibration element to vibrate the display at a first frequency band such that the display outputs the first signal; and allowing the vibration element to vibrate the display at a second frequency band such that the display outputs sound, wherein the first signal is an ultrasonic wave, wherein the second signal is a signal that corresponds to the first signal reflected and received from an object, and wherein a minimum value of the first frequency band is larger than a maximum value of the second frequency band. ### Claim 10 (depends on 9) The method of claim 9, further comprising: receiving a call from an external terminal, wherein the allowing of the vibration element to vibrate the display at the second frequency band such that the display outputs sound includes: allowing the vibration element to vibrate the display at the second frequency band in response to receiving the call. ### Claim 11 (depends on 9) The method of claim 9, wherein the allowing of the vibration element to vibrate the display at the first frequency band such that the display outputs the first signal includes: allowing the vibration element to vibrate the display at the first frequency band for a predefined period. ### Claim 12 (depends on 9) The method of claim 9, further comprising: applying a voltage to the vibration element to vibrate the vibration element. ### Claim 13 (depends on 9) The method of claim 9, wherein the controlling includes: controlling an ON/OFF of the display based on a ratio of an amplitude of the second waveform to an amplitude of the first waveform. ### Claim 14 (depends on 9) The method of claim 9, wherein the controlling includes: controlling an ON/OFF of the display based on a ratio of a frequency of the second waveform to a frequency of the first waveform, wherein the frequency of the first waveform is in the first frequency band. ### Claim 15 A storage medium storing computer-readable instructions that, when executed by an electronic device, cause the electronic device to: allow a vibration element positioned under a display to vibrate the display such that the display outputs a first signal having a first waveform; obtain a second signal having a second waveform through a microphone in response to the output first signal; turn off the display based on a result obtained by comparing the first waveform and the second waveform which indicates that an approaching object is within a predefined distance; allow the vibration element to vibrate the display at a first frequency band such that the display outputs the first signal; and allow the vibration element to vibrate the display at a second frequency band such that the display outputs sound, wherein the first signal is an ultrasonic wave, wherein the second signal is a signal that corresponds to the first signal reflected and received from an object, and wherein a minimum value of the first frequency band is larger than a maximum value of the second frequency band.