Display-Integrated Optical Health Sensing for Thinner Mobile Screens
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Solution Overview
Problem
Current wearable electronic devices require additional IoT sensors for physiological health data detection, increasing device complexity, thickness, and cost, limiting the development of thin and rollable terminal screens.
Innovation Solution
An operation method and device integrating a display unit, a sensing unit, and a processing unit, where a body part identification area on the display unit captures optical signals reflected from a user's body part using a TFT image sensing array film, allowing for direct physiological health data detection without external sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an additional sensor is placed on the terminal and outside the screen area to implement physiological health data detection, then the detection function is achieved, but the difficulty of processing and assembling increases and the thickness of the terminal increases
Solution Approach 1:
The patent merges the light sensor with the display screen by integrating the sensing unit below the display unit, allowing the display screen to simultaneously serve as both display and sensing interface. This eliminates the need for separate external sensors and reduces assembly complexity.
Solution Approach 2:
The display screen is designed to perform multiple functions: it serves as both the display interface and the sensing interface for physiological health detection. The sensing unit integrated below the display enables the screen to detect optical signals from body parts while maintaining its display function.
2Reliability
If an additional sensor is placed on the terminal and outside the screen area to implement physiological health data detection, then the detection function is achieved, but the thickness of the terminal increases
Solution Approach 1:
The sensing unit is nested below the display unit, with the light sensor integrated within the same structural layer as the display. This nested arrangement allows the sensing function to be embedded within the existing terminal thickness rather than adding external components.
Solution Approach 2:
The display screen and sensing unit are merged into a single integrated structure, where the sensing unit is positioned directly below the display unit. This integration eliminates the need for additional thickness to accommodate separate sensors.
3Reliability
If additional IoT devices are worn to detect user's physical health data, then the detection function is achieved, but device costs increase
Solution Approach 1:
The terminal device is designed to perform multiple functions including both display and physiological health detection. By integrating the sensing unit into the terminal, the device eliminates the need for separate IoT devices, thereby reducing overall system cost.
Solution Approach 2:
The terminal device provides its own physiological health detection capability through the integrated sensing unit, eliminating the need for users to purchase and wear additional IoT devices. The terminal serves itself by incorporating the detection function directly.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Facilitates user-friendly operation, reduces device thickness, and enables lighter, thinner mobile devices by integrating health data detection directly onto the terminal screen, improving user experience and market satisfaction.
Implementation Method 1
generating an optical signal and receiving the optical signal reflected by a body part of a user by the sensing unit
Implementation Method 2
when the TFT is exposed to the light, the electron-hole pair in the semiconductor is excited by the energy of the light, and the field effect of the TFT structure will cause the electron-hole pair to be separated, thereby causing the TFT to leak current
Data Source
AI summary
Provided are an operation method and device for physiological health detection, wherein by arranging a body part identification area on a display unit, and arranging a sensing unit below the body part identification area, when a body part of a user is close to the body part identification area, the sensing unit may capture optical signal information reflected by the body part, and a processing unit may obtain, according to the optical signal information reflected by the body part, physiological health information corresponding to the body part, and the physiological health information may be displayed on the display unit. Compared with the existing method of a mobile device additionally arranging a sensor outside a display screen region, the present invention facilitates user operations and improves the user experience, and the whole thickness of the mobile device may also be effectively reduced, thereby enabling the mobile device to be lighter and thinner and satisfy the requirements of the market.