Display-Based Biometric Sensing for Electronic Devices
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional electronic devices require dedicated light emitting devices and light sensors for biometric information acquisition, which limits design and increases costs, prompting research for alternatives that do not rely on these components.
Innovation Solution
An electronic device that uses its display to emit light for biometric information acquisition, eliminating the need for dedicated light emitting devices and optical sensors by integrating biometric sensors into the display, allowing for various biometric functions without additional hardware.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If dedicated light emitting devices and light sensors are used for biometric information acquisition, then measurement precision and reliability are improved, but device complexity and cost increase
Solution Approach 1:
The display device is made to serve dual purposes: displaying visual information and functioning as a light source for biometric measurement. The display emits light that can be used for illumination and as a controllable light source for optical-based biometric sensing, eliminating the need for separate dedicated light emitting devices and reducing overall device complexity.
Solution Approach 2:
The patent combines the display function and light emitting function into a single integrated component. The display structure itself is utilized as the light emitting device for biometric measurement, merging what were previously separate functions (display and illumination/sensing) into one unified system, thereby reducing component count and complexity.
2Adaptability or versatility
If dedicated light emitting devices and light sensors are exposed on the housing surface, then biometric measurement function is achieved, but design flexibility is limited
Solution Approach 1:
The display serves multiple functions including visual output, illumination, and light source for biometric sensing. This multi-functionality allows the device to achieve biometric measurement capabilities without adding separate components that would constrain design flexibility, as the display itself adapts to serve different purposes.
Solution Approach 2:
The display device provides its own light for biometric measurement purposes without requiring external dedicated light sources. By utilizing its inherent light-emitting capability, the display serves the dual purpose of visual display and providing illumination for optical sensing, thereby enabling design flexibility without increasing complexity.
3Measurement precision
If dedicated light emitting devices and light sensors are installed, then biometric information acquisition capability is improved, but manufacturing cost increases
Solution Approach 1:
The display is designed to perform multiple functions including visual display and serving as a controllable light source for biometric measurement. This eliminates the need to manufacture and install separate dedicated light emitting devices and light sensors, thereby reducing manufacturing costs while maintaining biometric information acquisition capability.
Solution Approach 2:
The patent merges the display function with the light emitting function for biometric measurement. By combining these functions into a single component (the display itself), the manufacturing process is simplified and costs are reduced, as separate components for light emission and sensing are no longer required.
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
Enables biometric information acquisition without the need for separate light emitting devices and optical sensors, enhancing design flexibility and reducing costs while providing multiple biometric functions.
Implementation Method 1
an electronic device that uses its display to emit light for biometric information acquisition
Implementation Method 2
uses its display to emit light for biometric information acquisition
Data Source
Figure 1
Figure 2~3
Figure 4A~4C
AI summary
An electronic device according to an embodiment may include a housing, a display exposed through at least part of a first surface of the housing, an image sensor, a processor operatively connected with the display and the image sensor, and a memory operatively connected with the processor, wherein the memory may store instructions that, when executed, cause the processor to detect a touch of a finger of a user on the image sensor, while displaying a user interface using the display, in response to detecting the touch, while the touch of the finger is maintained on the image sensor, change the user interface in an area of the display within a preset distance from the image sensor, and acquire biometric information of the user based on reflection light of light emitted from the display, where the reflection light is acquired using the image sensor.