Foldable Display Panel Layout for Biometric Sensing When Folded
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Solution Overview
Problem
Existing display devices, particularly foldable ones, lack efficient mechanisms for measuring biometric information such as oxygen saturation, pulse, and blood pressure while maintaining portability and display functionality.
Innovation Solution
Incorporating a display panel with a first and second non-folding area and a folding area, equipped with light emitting diodes and light receiving elements, which generate and detect biometric signals through light emission and reception, allowing for biometric information processing when the panel is folded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a foldable display device is designed to increase portability and display area, then the display device can be folded to reduce size, but biometric measurement functionality is lost
Solution Approach 1:
The patent combines the display panel with biometric sensing functionality by integrating light emitting diodes and light receiving elements directly into the display structure. This merging allows the display to serve dual purposes: visual output and biometric measurement, eliminating the need for separate biometric devices and maintaining functionality during folded state
Solution Approach 2:
The display panel is designed to perform multiple functions including visual display and biometric information measurement. The light emitting diodes and light receiving elements enable the same structure to both display information and measure physiological parameters such as pulse and oxygen saturation, achieving multi-functionality that resolves the contradiction between portability and functional completeness
2Reliability
If light emitting diodes and light receiving elements are added to the display panel for biometric measurement, then biometric measurement capability is improved, but device complexity increases
Solution Approach 1:
The patent merges the biometric sensing components with the display panel structure, combining light emitting diodes and light receiving elements into the same substrate. This integration eliminates the need for separate biometric devices and reduces overall structural complexity while maintaining measurement capability
Solution Approach 2:
The display panel serves as a universal component that performs both visual display and biometric measurement functions. By making the display multi-functional, the patent avoids adding separate dedicated biometric devices, thereby reducing device complexity while improving measurement capability
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 biometric information like oxygen saturation, pulse, and blood pressure by utilizing light emitting diodes and light receiving elements, enhancing user convenience and portability in foldable display devices.
Implementation Method 1
A first light emitting diode is disposed in the first emission area and a second light emitting diode and a light receiving element are disposed in the sensing area
Implementation Method 2
the light receiving element includes a light receiving layer that detects intensity of light by emitting electrons in response to the light
Data Source
AI summary
A display device comprising a display panel including a first non-folding area having a first emission area, a second non-folding area having a sensing area and a folding area that is disposed between the first non-folding area and the second non-folding area. A first light emitting diode is disposed in the first emission area and a second light emitting diode and a light receiving element are disposed in the sensing area. A processor obtains a biometric signal of a user by using the light receiving element and at least one of the first light emitting diode and the second light emitting diode. The processor generates biometric information based on the biometric signal. The processor detects the biometric signal when the display panel is folded so that the first non-folding area and the second non-folding areas are disposed to face each other.