Flexible Display Distortion Compensation via Folding Strain Data
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Solution Overview
Problem
Flexible display devices face challenges in maintaining display quality due to flexural strain in folding areas, leading to image distortion and luminance differences when folded or unfolded, which affect visibility and user experience.
Innovation Solution
A display device with a folding information detector and distortion compensator system that measures cumulative folding time and count, generates strain information, and applies compensation data to correct image distortion in real-time, using a lookup table and illuminance sensor to optimize display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display panel is made flexible to enable folding, then the adaptability and versatility of the device is improved, but image distortion and luminance differences occur in the folding area
Solution Approach 1:
The patent applies local quality by implementing region-specific compensation. The display panel is divided into a folding area and non-folding areas, with the folding area receiving specialized distortion compensation through a lookup table that stores compensation data specifically for this region. This allows different parts of the display to have different compensation characteristics, maintaining overall display quality while enabling folding functionality.
Solution Approach 2:
The patent utilizes parameter changes by detecting folding state parameters (cumulative folding time and cumulative folding count) and adjusting the compensation accordingly. The controller reads folding information from sensors and dynamically selects or modifies compensation data from the lookup table based on the detected folding parameters, allowing the display to adapt to different folding states and maintain image quality.
2Manufacturing precision
If real-time distortion compensation is implemented, then the display quality in the folding area is improved, but the device complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing compensation data in a lookup table before the device is used. Instead of calculating compensation in real-time during operation, the system pre-computes the necessary compensation values for various folding states and stores them in memory. When folding occurs, the controller simply retrieves the appropriate compensation data from the lookup table based on detected folding parameters, significantly reducing computational complexity while maintaining compensation effectiveness.
Solution Approach 2:
The patent replaces complex real-time mechanical or computational compensation mechanisms with a simplified data retrieval system. Instead of using complex algorithms or mechanical adjustments to compensate for distortion, the system substitutes this with a lookup table approach that uses pre-stored compensation data, reducing the need for complex real-time processing and simplifying the overall system architecture.
3Measurement precision
If cumulative folding information is measured and stored, then the accuracy of distortion compensation is improved, but the loss of time for measurement and data storage increases
Solution Approach 1:
The patent applies periodic action by measuring folding information at discrete intervals rather than continuously. The system measures cumulative folding time and cumulative folding count at specific points in time, storing these values in memory. This periodic measurement approach provides sufficient accuracy for distortion compensation while avoiding the time loss associated with continuous monitoring, achieving a balance between measurement precision and time efficiency.
Data Source
AI summary
A display device includes a display panel, a folding information detector, a control module, and a distortion compensator. The display panel displays an image and includes a folding area folded with respect to an imaginary folding axis and a plurality of non-folding areas adjacent to the folding area when viewed in a plan view. The folding information detector detects folding information about the display panel, and a control module outputs a control signal based on the folding information provided from the folding information detector. The distortion compensator compensates for a distortion of the image displayed through the folding area in response to the control signal.