Curved Dual-Panel Display Pixel Alignment via Local Quality
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Solution Overview
Problem
Curved electronic display devices face image quality deterioration due to misalignment of pixels in front and back display panels caused by differences in their lengths, leading to suboptimal alignment and image formation.
Innovation Solution
The implementation of a curved dual-panel electronic display device design where the front display panel has longer pixels than the back display panel, ensuring better alignment in a direction normal to the outer surface, with the front panel's pixels overlapping the back panel's pixels to maintain image quality across a convex surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the front display panel has the same pixel length as the back display panel in a curved configuration, then the manufacturing process is simplified, but the pixels become misaligned in the normal direction to the outer surface, deteriorating image quality
Solution Approach 1:
The patent applies local quality by making the pixel lengths non-uniform across the display panel. Specifically, pixels at different positions (edge vs. center) have different lengths in the curved direction, with edge pixels being longer than center pixels. This local variation in pixel dimensions compensates for the curvature-induced misalignment, ensuring that all pixels remain properly aligned in the normal direction to the outer surface across the entire curved display area.
2Adaptability or versatility
If the display panel is curved to provide a curved display surface, then the visual experience is improved, but the pixel alignment between front and back panels deteriorates due to length differences
Solution Approach 1:
The patent enables curved display capability while maintaining pixel alignment by implementing local quality variations in pixel dimensions. Pixels at different radial positions from the center of curvature have different lengths, with the length increasing toward the edges. This local adaptation allows the display to maintain proper optical alignment across the entire curved surface, resolving the contradiction between curved display versatility and manufacturing precision.
3Ease of manufacture
If uniform pixels are used in both panels, then the device structure is simpler, but image quality deteriorates due to misalignment when panels have different effective lengths
Solution Approach 1:
The patent resolves the contradiction between ease of manufacture and image quality by implementing local quality in pixel design. While this requires different pixel lengths (simplifying the overall structure compared to complex alignment mechanisms), it directly improves image quality by ensuring proper alignment. The manufacturing process is adapted to produce these varying pixel lengths, which is more straightforward than implementing complex mechanical or optical alignment systems.
Data Source
AI summary
A curved dual-panel electronic display device including a back display panel having a curved shape and a plurality of pixels and a front display panel having a curved shape and a plurality of pixels. The front display panel back display panel being stacked and curved such that the outer surface of the front display has convex shape. A first pixel from the front display panel overlaps with a second pixel from a second display panel in a normal view, and a length of the first pixel in a direction of the curve of the front display panel is larger than the length of the second pixel in a length direction of the curve of the back display panel.