Organic Compound Sensor Integration for Display-Embedded Biometric Detection
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Solution Overview
Problem
Existing biometric sensors in display devices face performance degradation when placed under the display panel due to recognition through multiple layers, and separate module integration limits design and usability.
Innovation Solution
A compound is integrated into the display panel to form a sensor-embedded structure, with a photoelectric conversion layer and electrodes, allowing for improved performance and design flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sensor is disposed under the display panel, then the display device can achieve biometric recognition function, but the recognition performance is degraded due to light absorption by multiple layers
Solution Approach 1:
The patent merges the sensor and display panel into an integrated structure where the sensor is embedded within the display panel layers. The sensor comprises a photoelectric conversion layer with organic compound that selectively absorbs light at specific wavelengths, allowing biometric recognition while minimizing interference from display layers through wavelength-selective detection
Solution Approach 2:
The patent applies local quality by designing the photoelectric conversion layer with specific organic compounds that have tailored light absorption characteristics for particular wavelength regions. This allows the sensor to selectively detect biometric information at wavelengths that penetrate the display panel while ignoring wavelengths absorbed by display layers
2Measurement precision
If the sensor is manufactured as a separate module and mounted on the outside of the display panel, then the sensor performance can be maintained, but design flexibility and usability are limited
Solution Approach 1:
The patent combines the sensor module with the display panel into a single integrated structure. The sensor is embedded within the display panel's layered structure, sharing common substrates and manufacturing processes, which maintains sensor performance while enabling flexible device design and improved usability
3Adaptability or versatility
If the sensor is embedded in the display panel, then design flexibility and usability are improved, but it is difficult to implement due to conflicting performance and physical property requirements
Solution Approach 1:
The patent employs parameter changes by selecting organic compounds with specific molecular structures that exhibit selective light absorption in particular wavelength regions. By adjusting the molecular structure and optical properties of the photoelectric conversion layer, the sensor can operate at wavelengths that penetrate display panels, resolving the conflict between display and sensor performance requirements
Solution Approach 2:
The patent uses composite materials by combining organic photoelectric conversion compounds with the display panel's existing layered structure. The sensor comprises multiple layers including organic compounds, electrodes, and encapsulation layers that are integrated with the display panel's TFT and color filter layers, creating a unified structure that satisfies both display and sensor requirements
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 integrated sensor maintains performance while enhancing design possibilities and usability by optimizing the compound's sublimation temperature and optical properties for efficient light absorption and conversion.
Implementation Method 1
the optical type sensor is a sensor configured to absorb light and convert the absorbed light into an electrical signal
Implementation Method 2
The organic material has a large extinction coefficient and may be configured to selectively absorb light in a specific wavelength region according to a molecular structure
Data Source
AI summary
Disclosed are a compound represented by Chemical Formula 1, a sensor including the compound, a sensor-embedded display panel, and an electronic device.In Chemical Formula 1, X1, A, and R1 to R5 are as described in the specification.