Display Pixel Emission Control for Biometric Sensing
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Solution Overview
Problem
Existing electronic devices lack an efficient method to measure biometric information without additional components, particularly for user authentication and health monitoring, using their front camera modules.
Innovation Solution
An electronic device is designed to measure biometric information using a front camera module and pixels near it, by altering the arrangement and emission mode of pixels on the display panel, allowing for high emission modes to detect biometric data without additional components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If additional components are added to measure biometric information, then measurement capability is improved, but device complexity increases
Solution Approach 1:
The patent combines the display panel's pixels with the biometric measurement function. The display panel serves dual purposes: displaying information and measuring biometric data through its pixel structure. This merging eliminates the need for separate biometric sensors while maintaining measurement capability.
Solution Approach 2:
The display panel is designed to perform multiple functions simultaneously. It acts as both a display device and a biometric sensor. The pixels can switch between display mode and biometric measurement mode, allowing one component to fulfill multiple roles in the device.
2Measurement precision
If high emission mode is activated for biometric measurement, then measurement accuracy is improved, but energy consumption increases
Solution Approach 1:
The display panel alternates between normal display mode and high emission biometric measurement mode. The controller activates high emission mode only when biometric measurement is required, using periodic pulsing patterns. This reduces overall energy consumption compared to continuous high emission operation.
Solution Approach 2:
The pixel emission characteristics are dynamically adjusted based on operational requirements. The controller can switch between different emission levels and patterns, optimizing energy usage by applying high emission only when and where needed for biometric measurement, rather than maintaining constant high emission across all pixels.
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 effective measurement of biometric information, such as heart rate and oxygen saturation, using the device's display panel and camera module, enhancing user authentication and health monitoring capabilities without requiring extra hardware.
Implementation Method 1
a plurality of first pixels, which are disposed in a unit region of the main display region, and a plurality of second pixels, which are disposed in a unit region of the peripheral display region
Implementation Method 2
the camera module overlapped with the signal transmission region
Data Source
AI summary
Provided is an electronic device measuring user's biometric information. The electronic device includes a display module including a display panel, in which a signal transmission region, a peripheral display region adjacent to the signal transmission region, and a main display region spaced apart from the signal transmission region are provided, and a camera module overlapped with the signal transmission region. The display panel includes a plurality of first pixels, which are disposed in a unit region of the main display region, and a plurality of second pixels, which are disposed in a unit region of the peripheral display region. An emission area of green light in the unit region of the first pixels is different from an emission area of green light in the unit region of the second pixels.