Foldable Display Image Correction for Crease-Induced Deformation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Flexible display devices, such as foldable and rollable displays, experience degradation of image quality, particularly in folding areas and peripheral regions due to structural deformation like creases, which affects visibility and user satisfaction.
Innovation Solution
Employing data correction processing technology based on structural deformation, the display device includes a main driver that corrects image data by dividing the display area into folding and flat areas, aligns and generates corrected image data using compensation data, and controls driving timing to mitigate image quality degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If flexible display devices are folded or bent to enable portability and flexibility, then adaptability and ease of operation are improved, but structural deformation occurs in folding areas causing image quality degradation
Solution Approach 1:
The display area is divided into multiple regions: a first flat display area, a second flat display area, a folding area between them, and first/second folding peripheral areas. This segmentation allows different correction strategies to be applied to different regions, with the folding area receiving specific compensation for structural deformation while flat areas maintain normal display characteristics.
Solution Approach 2:
Different display regions are assigned different image quality characteristics based on their structural conditions. The folding area, which experiences deformation, receives corrected image data with adjusted grayscale values and luminance compensation, while flat display areas use standard image data. This local differentiation maintains overall image quality despite the presence of folding regions.
2Reliability
If the display area is divided into multiple regions for correction processing, then image quality in folding areas is improved, but device complexity increases
Solution Approach 1:
The main driver pre-calculates and stores correction data for different folding states and deformation levels before actual display operation. When the display is folded, the system simply retrieves and applies the pre-computed correction data rather than performing complex real-time calculations, significantly reducing processing complexity during operation.
Solution Approach 2:
The system creates corrected image data as a copy of the original image data, applying compensation values to grayscale and luminance parameters. This copying approach allows the original image data to remain unchanged while a corrected version is generated for display, simplifying the processing architecture by working with duplicate data structures rather than modifying the original.
3Illumination intensity
If compensation data is applied to correct structural deformation, then visibility in folding areas is improved, but loss of information increases due to additional processing
Solution Approach 1:
The correction process modifies specific parameters of the image data (grayscale values and luminance) rather than the entire data structure. By changing only the necessary parameters affected by folding deformation and leaving other parameters unchanged, the system minimizes information loss while achieving the desired visibility improvement in folding areas.
Data Source
AI summary
The present disclosure relates to a display device. According to one or more embodiments of the disclosure, a display device comprising a display panel comprising a display area where pixels are arranged, a data driver configured to provide data signals to the pixels of the display panel, and a main driver configured to correct image data from outside based on structural deformation amount of a folding area of the display area to provide it to the data driver, and to control driving timing of the data driver, wherein the main driver is configured to divide the display area into at least one folding area and first display area and the second flat display area, corrects the image data based on the structural deformation amount of the folding area, and aligns corrected image data to provide it to the data driver.