Display Panel Biometric Measurement via Selective Light Reception
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Solution Overview
Problem
Existing electronic devices lack the capability to measure biometric information, such as skin condition, without additional parts, and struggle to selectively receive and diagnose red and green light reflections from skin inflammation.
Innovation Solution
An electronic device with a display panel containing light emitting elements that emit red, green, and blue light, and light receiving elements adjacent to these, which can selectively receive red or green light reflected from the skin and generate biometric information based on the reflection location and light receiving amount.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If additional parts are used to measure biometric information, then measurement capability is improved, but device complexity increases
Solution Approach 1:
The patent combines the biometric measurement function with the existing display panel by integrating light emitting elements and light receiving elements within the same pixel structure. This merging eliminates the need for separate measurement devices while maintaining measurement capability, directly resolving the contradiction between measurement precision and device complexity
Solution Approach 2:
The display panel is designed to serve dual purposes: displaying images through light emitting elements and measuring biometric information through light receiving elements. This multi-functionality allows the same device structure to perform both display and measurement tasks, avoiding additional parts and reducing overall device complexity
2Measurement precision
If the display panel emits blue light in high power mode, then biometric information measurement accuracy is improved, but energy consumption increases
Solution Approach 1:
The light emitting element operates in different power modes depending on the functional requirement: high power mode when biometric measurement is needed and normal display mode during regular operation. This dynamic operation allows the system to achieve high measurement accuracy when needed while minimizing energy consumption during normal display functions
Solution Approach 2:
The system periodically switches between display mode and measurement mode, activating high power blue light emission only during brief measurement intervals. This periodic action enables accurate biometric data collection while limiting overall energy consumption to specific time windows rather than continuous high power operation
3Illumination intensity
If the light receiving element receives all reflected light, then light sensitivity is improved, but measurement precision of specific wavelengths deteriorates
Solution Approach 1:
The light receiving element is designed with wavelength-selective properties that allow it to preferentially receive red light and green light while filtering out blue light. This local quality differentiation enables the element to maintain high sensitivity to the specific wavelengths needed for skin condition diagnosis while achieving precise wavelength discrimination through its selective reception characteristics
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 the electronic device to diagnose skin conditions by determining the location and degree of inflammation based on the received light, without requiring additional measurement parts, thus providing effective biometric information measurement and diagnosis.
Implementation Method 1
a light emitting element emitting red light, green light, or blue light
Implementation Method 2
receives reflection light reflected from a skin of a user
Implementation Method 3
a light receiving element, which is positioned adjacent to the light emitting element and which receives reflection light
Data Source
AI summary
An electronic device includes a display panel and a biometric information module. The display panel includes red-light emitting elements, green-light emitting elements, blue-light emitting elements, and light receiving elements that are spaced from each other. The blue-light emitting elements emit blue light in a biometric information mode of the electronic device. The light receiving elements receive at least one of red light and green light in the biometric information mode of the electronic device after the blue-light emitting elements have emitted the blue light. The light receiving elements generate electrical signals in response to the at least one of the red light and the green light. The biometric information module is electrically connected to the display panel and generates biometric information about a skin of a user based on the electrical signals.