Integrated Display Light Sensing Pixels Biometric Measurement
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Solution Overview
Problem
Existing portable blood pressure measuring devices require separate light sources, sensors, and displays, making them inconvenient to carry alongside smartphones or tablets.
Innovation Solution
A display device with integrated display pixels, light sensing pixels, and a main driving circuit that guides bio-signal detection using an image display screen, allowing for accurate measurement of biometric information like blood pressure, heart rate, and oxygen saturation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a portable blood pressure measuring device is used, then biometric information can be measured, but the device requires separate light source, sensor, and display making it inconvenient to carry
Solution Approach 1:
The patent merges the display pixels, light sensing pixels, and main driving circuit into a single integrated display device. The display panel incorporates both display pixels for visual output and light sensing pixels for biometric detection, eliminating the need for separate portable blood pressure measuring devices while maintaining full biometric measurement functionality.
Solution Approach 2:
The display device performs multiple functions: it displays visual information through display pixels and simultaneously detects biometric information through light sensing pixels. This multi-functionality allows a single device to serve both as a display device and a biometric measurement device, reducing the need for separate specialized devices.
2Measurement precision
If multiple separate devices are carried for biometric measurement, then measurement accuracy can be maintained, but convenience and portability are reduced
Solution Approach 1:
By integrating the light sensing pixels directly into the display panel, the patent combines the functionality of multiple separate devices (display device, light source, sensor) into one unified portable device. This maintains measurement precision while significantly improving portability and ease of operation.
3Adaptability or versatility
If light sensing pixels are added to display panel, then biometric detection capability is enabled, but device structure becomes more complex
Solution Approach 1:
The patent merges display pixels and light sensing pixels into a single integrated display panel structure. Both pixel types share the same physical substrate and encapsulation layers, with light sensing pixels positioned at specific regions to detect bio-signals while display pixels provide visual output. This integration enables bio-signal detection capability without proportionally increasing 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 convenient and accurate measurement of various biometric information using a single portable display device, improving detection accuracy and reducing the need for separate devices.
Implementation Method 1
detecting a user's bio-signal, such as a photoplethysmography signal
Data Source
AI summary
A display device including: display pixels arranged in a display area of a display panel; light sensing pixels arranged in the display area; a display scan driver configured to drive the display pixels to emit light; a light sensing scan driver configured to drive the light sensing pixels to sense light; and a main driving circuit configured to measure a user's biometric information using light sensing signals received from the light sensing pixels, wherein the main driving circuit displays a preset application program screen during a biometric information measurement period to guide the user's pulse wave signal detection process, and measures the biometric information using pulse wave signals determined to have high accuracy among pulse wave signals detected during the biometric information measurement period.