Display under sensor, system and method
By activating a sensor placed on the surface layer below the display when the lighting components are off, and using VSYNC and PWM signals to determine the high-frequency trigger pulse and delay time, the problem of internal light interference is solved, and accurate sensing by the sensor is achieved.
CN114730226BActive Publication Date: 2026-01-13VISHAY SEMICON GMBH
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Patent Information
- Application Number
- CN202080078129.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2020-04-28
- Filing Date
- 2020-09-16
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2040-09-16
AI Technical Summary
Technical Problem
In the prior art, the sensor below the display is easily interfered with by internal light when sensing ambient light and proximity signals, resulting in inaccurate sensing results.
Method used
By placing the sensor below the surface layer of the display device and activating the sensor when the lighting components are off, high-frequency trigger pulses and delay times are determined using a vertical synchronization signal cycle and a pulse width modulation signal, thus avoiding interference from internal light.
Benefits of technology
It effectively eliminates or reduces the interference of internal light on the sensor, improves the accuracy and reliability of sensing, and ensures that the sensor can accurately sense ambient light and proximity signals below the display.
✦ Generated by Eureka AI based on patent content.
Abstract
The technology, apparatuses, and systems disclosed herein include detecting a vertical synchronization (VSYNC) signal cycle; determining a high frequency trigger pulse based on detecting a pulse width modulation (PWM) signal of an illumination component, the high frequency trigger pulse corresponding to a deactivation time of the illumination component; receiving a delay time period; and activating a first sensor at a first time within the VSYNC signal cycle, the first time determined based on the high frequency trigger pulse and the delay time period. The first sensor can sense a first sensor reading, and can be deactivated after being activated. A display setting can be adjusted based at least on the first sensor reading, and the illumination component can be activated after the first sensor is deactivated.
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