Display Device With Integrated Infrared LEDs for Biometric Sensing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Displays with micro LEDs face challenges in effectively detecting biological information due to interference from visible light output, making it difficult to accurately sense objects such as fingerprints or vein patterns.
Innovation Solution
Incorporating both visible light and infrared light emitting elements in the display device, where visible light elements output first light in the visible region for image display and infrared light elements output second light in the infrared region for biological information detection, allowing for simultaneous image display and high-definition biological information sensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If visible light LEDs are used for display, then image display capability is improved, but biological information detection capability deteriorates
Solution Approach 1:
The display device is segmented into two independent functional systems: a visible light LED system for image display and an infrared LED system for biological information detection. Each system operates independently with its own light source and detection mechanism, allowing both functions to perform optimally without interference from the other system's operations.
Solution Approach 2:
The display device is designed with multi-functionality, simultaneously serving as both a visual display device and a biological information detection device. The infrared LEDs integrated into the display structure enable the same device to perform both display and detection functions, eliminating the need for separate dedicated detection devices.
2Measurement precision
If infrared light elements are added for detection, then biological information detection capability is improved, but device complexity increases
Solution Approach 1:
The infrared LED elements are merged with the existing display pixel structure, combining the visible light display function and infrared detection function within the same spatial framework. This integration allows the device to maintain a unified structural architecture while adding detection capability, thereby limiting the increase in overall device complexity.
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 accurate detection of biological information like fingerprints and vein patterns while maintaining image display capabilities, enhancing the device's functionality in personal identification and interaction sensing.
Implementation Method 1
The first inorganic light emitting elements are configured to output first light in a visible light region
Implementation Method 2
The second inorganic light emitting elements are configured to output second light in an infrared light region
Data Source
AI summary
A display device includes a substrate, a plurality of pixels provided to the substrate, and a plurality of first inorganic light emitting elements and a plurality of second inorganic light emitting elements provided to the pixels. The first inorganic light emitting elements are configured to output first light in a visible light region, and the second inorganic light emitting elements are configured to output second light in an infrared light region.