Island Pixel Compensation Layout for Seamless Micro LED Displays
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Solution Overview
Problem
Current micro LED display technologies face issues with optical aberration, uneven brightness, and discontinuous screens due to errors in pixel arrangement and lens alignment, leading to distorted and deformed display images.
Innovation Solution
An image compensation device with a substrate featuring a central area and configuration rings, where island display units with real and dummy pixels are arranged to correct optical quality issues, using a higher number of dummy pixels to compensate for discrete images and improve display integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a lens array is used to improve transparency and transmittance of the panel, then optical quality is improved, but forward/off-axis aberration occurs causing display screen deformation
Solution Approach 1:
The patent introduces a compensation display unit as an intermediary component between the lens array and the display screen. This compensation unit generates correction images that counteract the optical aberrations caused by the lens array, thereby maintaining both transparency and image integrity without requiring changes to the lens array itself.
Solution Approach 2:
The system employs a feedback mechanism where the compensation display unit continuously generates corrective images based on the optical aberrations introduced by the lens array. The control unit processes the relationship between the original image and the compensation image to maintain accurate display positioning despite the presence of optical distortions.
2Illumination intensity
If island arrangement of pixels and lens arrays is used to improve transparency, then transmittance is improved, but errors in pixel arrangement and lens alignment cause display distortion
Solution Approach 1:
The compensation display unit performs preliminary actions by pre-calculating and displaying compensation images that anticipate and counteract potential alignment errors and optical aberrations. This proactive approach ensures that even if manufacturing tolerances cause misalignment, the display image integrity is maintained through pre-applied corrections.
3Productivity
If micro LED size is reduced to several micrometers to achieve small size display, then display resolution is improved, but optical aberration and uneven brightness increase
Solution Approach 1:
The compensation display unit applies local quality corrections by generating compensation images with spatially varying characteristics that address specific optical aberrations and brightness non-uniformities in different regions of the display. This allows high-resolution micro LED displays to maintain uniform optical quality across the entire display area despite manufacturing variations.
Data Source
AI summary
An image compensation device including a substrate and island display units is provided. The substrate includes a central area and configuration rings surrounding the central area and spaced apart from the central area at different intervals. The island display units are disposed on the substrate. One of the island display units is disposed at the central area, and the other island display units are respectively disposed at the configuration rings. Each island display unit includes a real display area and a dummy display area located around the real display area, and includes real pixels and dummy pixels. The real pixels are disposed in the real display area. The dummy pixels are disposed in the dummy display area, and a number of the dummy pixels is greater than a number of the real pixels to compensate for a display image spliced by discrete images.