Display Gap Elimination via Polarization Splitting Prism
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Solution Overview
Problem
Large-size tiled displays using LCD panels suffer from gaps between spliced images due to the frame areas, which affect the viewing quality and continuity of the displayed images, as existing methods to eliminate these gaps are incomplete and impact image quality.
Innovation Solution
A display system with an effective display area and a frame area, featuring an image overlap display area where first and second display positions alternate, utilizing a polarization splitting prism and a convergent prism to converge light from the second display positions to the frame area, with polarizing reflective films to selectively reflect or transmit light based on polarization direction, ensuring seamless image integration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If LCD panels are spliced to form large-size displays, then the display size is increased, but gaps appear between the spliced images due to frame areas
Solution Approach 1:
The patent introduces a third dimension (depth) by placing overlapping display areas in front of and behind the spliced interface. This creates a stereoscopic effect where images from both displays contribute to the frame area, effectively eliminating gaps through spatial layering rather than simple planar arrangement
Solution Approach 2:
The patent uses the frame area as an intermediary region that receives light from overlapping display areas of both adjacent displays. This intermediary zone acts as a buffer that integrates images from multiple displays, converting the gap problem into a controlled light redirection process through polarizing beamsplitters
2Manufacturing precision
If conventional image amplification is used to fill gaps, then the gap visibility is reduced, but the image quality is degraded
Solution Approach 1:
The patent segments the display area into effective display areas and frame areas, with further segmentation into overlapping regions in front of and behind the spliced interface. This segmentation allows different regions to serve different functions: primary image display, gap filling, and seamless integration, maintaining overall image quality while eliminating gaps
Solution Approach 2:
The patent changes the optical parameters of light propagation by using polarizing beamsplitters to redirect light paths. Instead of amplifying images (changing intensity parameters), the system changes the spatial distribution and polarization state of light, allowing gapless display without degrading image fidelity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution achieves borderless splicing of displays, minimizing the visual fragmentation and ensuring full, clear, and high-quality images by effectively eliminating gaps between spliced images, providing a seamless viewing experience.
Implementation Method 1
a polarization splitting prism is disposed on a light-emitting surface of the display and at a position at least corresponding to the frame area and the image overlap display area
Implementation Method 2
a convergent prism, configured to converge light from the second display positions in the image overlap display area to the frame area, is disposed on a light-emitting surface of the polarization splitting prism
Implementation Method 3
a polarizing reflective film is disposed on a reflecting surface of the convergent prism and does not reflect light from the first display positions but reflects light from the second display positions
Data Source
AI summary
A display includes an effective display area and a frame area; an image overlap display area is disposed at a position in the effective display area, close to the frame area, and includes first display positions related to an image to be displayed in the effective display area and second display positions related to an image to be displayed in the frame area; the first and second display positions are distributed in an alternate form; a polarization splitting prism is disposed on a light-emitting surface of the display and at a position at least corresponding to the frame area and the image overlap display area; and a convergent prism configured to converge light from the second display positions in the image overlap display area to the frame area is disposed on a light-emitting surface of the polarization splitting prism. Also a tiled display is disclosed.