Bendable Display Substrate Curvature Detection via Polarization
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Solution Overview
Problem
Existing display apparatus technologies face challenges in ensuring reliability and power efficiency due to complex control algorithms and increased manufacturing costs, particularly when dealing with curvature and external light interference, which degrades image quality and visibility.
Innovation Solution
A display apparatus with a bendable substrate and integrated sensors that detect curvature, allowing for adaptive control of the image display area to maintain reliability and visibility by adjusting the size of the display based on the detected bending, using a displacement sensor to monitor resistance changes and adjust the image area accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex control algorithms are used to ensure display reliability during curvature, then display reliability is improved, but manufacturing cost and device complexity increase
Solution Approach 1:
The patent replaces complex software control algorithms with a simple optical detection mechanism. By using a polarization detecting device to detect changes in polarized state of incident light, the system directly measures curvature effects without requiring complex image processing or feedback control algorithms, thereby reducing device complexity while maintaining display reliability
Solution Approach 2:
The display apparatus uses its own display elements to detect curvature by monitoring changes in light polarization caused by substrate bending. This self-detection mechanism eliminates the need for separate complex sensing systems and simplifies the overall control architecture
2Reliability
If complex feedback control operations are performed to ensure reliability, then display reliability is improved, but power consumption of driver IC increases
Solution Approach 1:
The patent replaces power-intensive computational feedback control with a passive optical detection system. The polarization detecting device passively measures curvature effects through light interaction, requiring minimal processing power and reducing driver IC power consumption while maintaining reliability through direct physical measurement
3Measurement precision
If optical detection is used to detect small deformation, then measurement precision is improved, but detection accuracy decreases when there is light scattering from external light sources
Solution Approach 1:
The patent applies local quality by using polarized light specifically for detection purposes. By controlling the polarization state of the detection light and measuring changes in this specific property, the system can distinguish the detected signal from unpolarized or randomly polarized external light sources, thereby maintaining measurement precision despite external light interference
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
Ensures display reliability and maintains high image quality during curvature by dynamically adjusting the image display area, reducing power consumption and manufacturing costs while enhancing user visibility.
Implementation Method 1
controlling optical characteristics such as the index of refraction by quantitatively detecting an amount of change of deformation due to a small force on a display apparatus, using an optical detecting unit of a polarization detecting device as a change in a polarized state of incident light
Data Source
AI summary
An apparatus includes a bendable substrate, light-emitting elements, a sensor, and a display controller. The display controller is configured to control the light-emitting elements at least in part based upon a bending of the substrate, which is detected by the sensor.