# US 12,109,431 B1 · Display apparatus driving method, display apparatus, and electronic device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,109,431 B1 - Document ID: US12109431B1 - Status: Granted - Kind: B1 - Application number: 18/388,376 - Filed: 2023-11-09 - Published: 2024-09-26 - Granted: 2024-10-08 - Earliest claimed: 2023-03-23 - Assignees: Hkc Corporation Limited - Applicants: HKC Corporation Limited - Inventors: Qinglin Chen; Rongrong Li - Web page: https://patentgrep.com/patent/US12109431B1 ## CPC - A61N 5/0625: {Warming the body, e.g. hyperthermia treatment} - G02F 1/13312: {Circuits comprising photodetectors for purposes other than feedback} - A61N 2005/0626: {Monitoring, verifying, controlling systems and methods} - A61N 2005/063: {comprising light transmitting means, e.g. optical fibres} - A61N 2005/0632: {Constructional aspects of the apparatus} - A61N 2005/0642: {Irradiating part of the body at a certain distance} - A61N 2005/0659: {infrared} - A61N: ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY (measurement of bioelectric currents A61B; surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body A61B18/00; anaesthetic apparatus in general A61M; incandescent lamps H01K; infrared radiators for heating H05B) - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS ## Abstract A display apparatus driving method includes: obtaining, based on a trigger signal, a distance value between the display apparatus and a user that is acquired by a distance detector, determining whether the distance value is within a preset range; and controlling a near-infrared light emitter of the display apparatus to emit near-infrared light, if the distance value is within the preset range, where the near-infrared light is used to heat the skin of the user. ## Claims ### Claim 1 A method for driving a display apparatus, the display apparatus comprising a face detector, the method comprising: obtaining, based on a trigger signal, a distance value between the display apparatus and a user that is acquired by a distance detector when a user face is detected by the face detector; determining whether the distance value is within a preset range; and controlling a near-infrared light emitter of the display apparatus to emit near-infrared light, if the distance value is within the preset range, wherein the near-infrared light is used to heat a skin of the user, wherein a display region of the display apparatus comprises at least two near-infrared light working zones used for irradiating the user face, and when the user face moves in front of the display apparatus, the display apparatus is configured to: determine a target near-infrared light working zone facing the user face, based on distance values acquired by distance detectors in the plurality of near-infrared light working zones; obtain a distance value between the target near-infrared light working zone and the user that is acquired by the distance detector; and control a near-infrared light emitter in the target near-infrared light working zone to emit the near-infrared light and control a near-infrared light emitter in a near-infrared light working zone other than the target near-infrared light working zone to stop emitting the near-infrared light. ### Claim 2 (depends on 1) The method for driving the display apparatus according to claim 1, wherein the controlling a near-infrared light emitter of the display apparatus to emit near-infrared light comprises: determining a mapping relationship between the distance value and an emission power of the near-infrared light emitter; and determining, according to the mapping relationship and the distance value, a power at which the near-infrared light emitter emits the near-infrared light. ### Claim 3 (depends on 1) A display apparatus driven by the method according to claim 1, wherein the display apparatus comprises a backlight module and a display panel that are arranged in a stacked manner, and the backlight module comprises: a near-infrared light emitter configured to emit near-infrared light, the near-infrared light being capable of heating a skin of the user; a distance detector configured to detect a distance value between the display apparatus and the user; a controller electrically connected to the distance detector and the near-infrared light emitter, wherein when the controller determines that the distance value is within a preset range, the controller controls the near-infrared light emitter to emit the near-infrared light; and a face detector configured to detect whether the skin of the user is a user face, wherein a display region of the display apparatus comprises a plurality of near-infrared light working zones, and a working status of the near-infrared light emitter in the plurality of near-infrared light working zones is switched depending on a position of the user. ### Claim 4 (depends on 3) The display apparatus according to claim 3, wherein the backlight module further comprises a bearer, a light guide, and a back plate that are arranged in sequence, the back plate comprises a bottom plate and a plurality of side plates that surround the bottom plate in sequence, the near-infrared light emitter is arranged on the bearer, the light guide is arranged on the bottom plate, and the light guide is configured to homogenize the near-infrared light emitted by the near-infrared light emitter, and direct the near-infrared light toward the display panel. ### Claim 5 (depends on 4) The display apparatus according to claim 4, wherein the near-infrared light emitter comprises a plurality of near-infrared light-emitting elements configured to emit the near-infrared light, a side of the light guide facing the bearer is provided with a plurality of light guide notches, the near-infrared light-emitting element is arranged in the light guide notch, and the near-infrared light emitted by the near-infrared light-emitting element enters the light guide through the light guide notch. ### Claim 6 (depends on 5) The display apparatus according to claim 5, wherein the light guide notch is a hemispherical notch. ### Claim 7 (depends on 5) The display apparatus according to claim 5, wherein at least one distance detector and at least one near-infrared light-emitting element are arranged in each of the near-infrared light working zones; and when the user faces the display apparatus, the plurality of near-infrared light working zones comprise at least one target near-infrared light working zone, the distance value acquired by at least one distance detector in the target near-infrared light working zone is within the preset range, and the controller is configured to control the near-infrared light-emitting element in the target near-infrared light working zone to work. ### Claim 8 (depends on 1) An electronic device, wherein the electronic device comprises a power supply apparatus and a display apparatus driven by the method according to claim 1, the display apparatus comprising a backlight module and a display panel that are arranged in a stacked manner, wherein the backlight module comprises: a near-infrared light emitter configured to emit near-infrared light, the near-infrared light being capable of heating a skin of the user; a distance detector configured to detect a distance value between the display apparatus and the user; a controller electrically connected to the distance detector and the near-infrared light emitter, wherein when the controller determines that the distance value is within a preset range, the controller controls the near-infrared light emitter to emit the near-infrared light; and a face detector configured to detect whether the skin of the user is a user face, wherein a display region of the display apparatus comprises a plurality of near-infrared light working zones, and a working status of the near-infrared light emitter in the plurality of near-infrared light working zones is switched depending on a position of the user. ### Claim 9 (depends on 8) The electronic device according to claim 8, wherein the backlight module further comprises a bearer, a light guide, and a back plate that are arranged in sequence, the back plate comprises a bottom plate and a plurality of side plates that surround the bottom plate in sequence, the near-infrared light emitter is arranged on the bearer, the light guide is arranged on the bottom plate, and the light guide is configured to homogenize the near-infrared light emitted by the near-infrared light emitter, and direct the near-infrared light toward the display panel. ### Claim 10 (depends on 9) The electronic device according to claim 9, wherein the near-infrared light emitter comprises a plurality of near-infrared light-emitting elements configured to emit the near-infrared light, a side of the light guide facing the bearer is provided with a plurality of light guide notches, the near-infrared light-emitting element is arranged in the light guide notch, and the near-infrared light emitted by the near-infrared light-emitting element enters the light guide through the light guide notch. ### Claim 11 (depends on 10) The electronic device according to claim 10, wherein the light guide notch is a hemispherical notch. ### Claim 12 (depends on 10) The electronic device according to claim 10, wherein a display region of the display apparatus comprises a plurality of near-infrared light working zones, and at least one distance detector and at least one near-infrared light-emitting element are arranged in each of the near-infrared light working zones; and when the user faces the display apparatus, the plurality of near-infrared light working zones comprise at least one target near-infrared light working zone, the distance value acquired by at least one distance detector in the target near-infrared light working zone is within the preset range, and the controller is configured to control the near-infrared light-emitting element in the target near-infrared light working zone to work.