Organic Compound Sensor-Embedded Display Panel Integration
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Solution Overview
Problem
Existing display devices face challenges in integrating biometric sensors due to differences in performance and physical properties between sensors and display panels, leading to degraded performance when sensors are embedded under the panel or limited design when manufactured as separate modules.
Innovation Solution
An organic compound with specific chemical properties is used to create a sensor-embedded display panel, incorporating a photoelectric conversion layer with a pn junction and auxiliary layers to enhance light absorption and electrical signal conversion, allowing for improved integration and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the sensor is disposed under the display panel, then the display device can achieve integrated form, but the sensor performance is degraded due to light absorption by the display panel and films
Solution Approach 1:
The patent positions the optical sensor laterally adjacent to the display panel rather than beneath it, utilizing the side dimension of the display device. This dimensional repositioning allows the sensor to receive light that has not been absorbed by the display panel layers, thereby maintaining sensor performance while achieving integrated design.
Solution Approach 2:
The patent introduces a reflective layer as an intermediary element between the light source and the optical sensor. This reflective layer redirects light that would otherwise be lost toward the sensor, enhancing the sensor's ability to detect biometric information without requiring the sensor to be positioned beneath the display panel.
2Reliability
If the sensor is manufactured as a separate module and mounted on the outside of the display panel, then the sensor performance is maintained, but the design flexibility and usability are limited
Solution Approach 1:
The patent merges the optical sensor and display panel into a single integrated structure where the sensor is formed in the same substrate as the display panel. This combining approach enables both the display functionality and biometric sensing capability to coexist in one device, providing design flexibility while maintaining sensor performance through proper optical path design.
3Reliability
If different materials are used for display panel and sensor, then each component can optimize its specific function, but the manufacturing complexity and integration difficulty increase
Solution Approach 1:
The patent employs a single substrate material that serves dual functions as both the display panel base and the sensor structure. This universal material approach allows different regions of the same substrate to be optimized for different functions (display and sensing) while simplifying the manufacturing process and reducing integration 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
The organic compound enables effective light absorption and electrical signal conversion, reducing image afterimages and improving high-speed photographing performance, while allowing for miniaturization and integration of biometric recognition capabilities within the display panel.
Implementation Method 1
the optical type sensor is a sensor that absorbs light and converts it into an electrical signal
Implementation Method 2
incorporating a photoelectric conversion layer with a pn junction and auxiliary layers to enhance light absorption and electrical signal conversion
Data Source
AI summary
Disclosed are an organic compound represented by Chemical Formula 1, and a sensor, a sensor-embedded display panel, and an electronic device including the organic compound.In Chemical Formula 1, D, A1, A2, R1, and R2 are each the same as in the specification.