Curved Display Panel Pixel Alignment via Coordinate Transformation
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Solution Overview
Problem
In display devices with a liquid crystal display panel having a curved surface, the alignment of light-transmitting positions between the liquid crystal display panel and the dimming panel is often misaligned due to differences in curvature, leading to suboptimal image contrast and viewing angles.
Innovation Solution
A display device configuration where a second panel with a curved surface is used in parallel to a first panel, applying blurring processing to dimming pixels based on the curvature and gradation values of the image signal, adjusting the distance between blurring regions to match the curvature of both panels, ensuring proper light transmission and alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the dimming panel has a curved surface along the liquid crystal display panel to maintain parallel plate surfaces, then the structural integrity and viewing angles are improved, but the alignment between pixel positions is misaligned due to curvature differences
Solution Approach 1:
The patent applies coordinate transformation based on curvature parameters to adjust the positioning of dimming pixels. By calculating the curvature of the liquid crystal display panel and using this information to transform coordinates, the system compensates for the misalignment caused by curved surfaces, enabling precise alignment between the liquid crystal display panel and dimming panel while maintaining parallel plate surfaces.
2Device complexity
If simple pixel positioning is used for the dimming panel, then the device complexity is reduced, but image contrast and viewing angles deteriorate due to misalignment
Solution Approach 1:
The system transforms pixel coordinates based on curvature parameters to accurately determine light-transmitting positions on the curved dimming panel. This coordinate transformation approach maintains relatively simple device architecture while achieving precise alignment that improves image contrast and viewing angles.
Solution Approach 2:
The patent explicitly accounts for the curved surface geometry of the liquid crystal display panel by incorporating curvature information into the coordinate transformation calculations. This allows the dimming panel to be positioned accurately along the curved surface, optimizing light transmission and image quality while maintaining the curved structure.
3Adaptability or versatility
If the curvature of the liquid crystal display panel is increased to improve viewing angles, then the display quality is enhanced, but the alignment precision with the dimming panel deteriorates
Solution Approach 1:
The system uses curvature parameters as input to coordinate transformation calculations. By accurately measuring and inputting the curvature values of the liquid crystal display panel, the system can compensate for the increased curvature effects and maintain precise determination of light-transmitting positions even on highly curved surfaces, thereby preserving both viewing angles and alignment precision.
Data Source
AI summary
A display device includes: a first panel comprising pixels; and a second panel having a plate surface provided substantially parallel to a plate surface of the first panel. The plate surface of each of the first and second panels includes a curved surface. When the curved surface is a convex portion and two pixels controlled to transmit the light through the first panel are located in the convex portion, a distance between centers of two predetermined regions to which a blurring processing is applied corresponding to the two pixels is set smaller than a distance between the two the pixels. When the curved surface is a concave portion and the two pixels controlled to transmit the light through the first panel are located in the concave portion, the distance between the centers of the two predetermined regions is set larger than the distance between the two the pixels.