Curved Flat Display Compensation for Luminance Distortion
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Solution Overview
Problem
Curved and flat combined display devices face issues with luminance distortion and stain recognition in curved areas, leading to compromised image quality and reliability due to larger viewing angle changes.
Innovation Solution
A method and device that utilize an imaging camera to detect distortion in curved areas, generate compensation data, and correct image data by comparing input data with imaged data, ensuring luminance distortion is suppressed and stains are not displayed, thereby improving image quality and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a curved display panel is used to provide a larger viewing angle, then the viewing angle is improved, but luminance distortion and color characteristic distortion occur in the curved area
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing compensation values for the curved area during manufacturing. The compensation value generator creates lookup tables with corrected luminance and color data for various viewing angles before the display is deployed, allowing the controller to retrieve and apply appropriate compensation data during operation without real-time complex calculations.
Solution Approach 2:
The patent implements parameter changes by dynamically adjusting luminance and color parameters based on the detected viewing angle. The controller modifies the image data parameters (luminance values and color characteristics) according to the curved area's geometric parameters and the actual viewing angle, transforming the display output to compensate for distortion caused by the curved surface.
2Manufacturing precision
If compensation techniques are applied to prevent luminance distortion in the curved area, then image quality is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the display panel into distinct flat area and curved area zones. The controller selectively applies different processing methods to each region: the flat area displays image data directly while the curved area receives compensation-processed data. This spatial segmentation allows targeted compensation only where needed, reducing overall system complexity.
Solution Approach 2:
The patent introduces an intermediary approach through the compensation value generator and lookup tables. Instead of implementing complex real-time distortion correction algorithms, the system uses pre-computed compensation values stored in lookup tables as intermediaries. The controller simply retrieves and applies these pre-calculated values during operation, significantly simplifying the real-time processing requirements.
3Manufacturing precision
If real-time compensation calculation is performed for the curved area, then image distortion is corrected, but processing time increases
Solution Approach 1:
The patent applies preliminary action by pre-calculating compensation values for various viewing angles during manufacturing and storing them in lookup tables. This eliminates the need for complex real-time calculations, as the system only needs to retrieve pre-computed values during operation, significantly reducing processing time while maintaining accurate distortion correction.
Solution Approach 2:
The patent uses copying by creating lookup tables that store pre-computed compensation data as copies of corrected image data for different viewing angles. During operation, the system copies the appropriate pre-processed data from the lookup table based on the detected viewing angle, avoiding the need to recalculate compensation values in real-time.
Data Source
AI summary
A curved and flat combined display device includes a display panel having a flat area and a curved area, a compensation value generator configured to compare curved area data of an image data input from an external system with curved area data of imaged data generated by capturing the display panel, and generate compensation value data for the curved area of the display panel, based on the comparing result, and a controller configured to compensate for the curved area data of the image data input from the external system based on the compensation value data, and control the display panel to display the compensated curved area data of the image data.