Tiled Display Panel Edge Pixel Layout for Uniform Seam Pitch
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Solution Overview
Problem
Tiled display products often exhibit differences in pixel pitch at seams, leading to pixel dislocation or excessive pitch, which affects the display effect and uniformity.
Innovation Solution
A display panel design where sub-panels are tiled with specific edge configurations and effective display bodies, including LED chips with converging light structures, to minimize spacing differences at seams, ensuring uniform pixel spacing and improved display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If sub-panels are tiled with conventional edge configurations, then the display coverage is maximized, but the pixel pitch at seams becomes different from non-seam areas, causing pixel dislocation and visible black strips
Solution Approach 1:
The patent applies local quality by configuring different pixel arrangements at edge regions versus central regions. Specifically, pixels at the edges of sub-panels are arranged with adjusted spacing and orientations to compensate for seam gaps, while central pixels maintain standard spacing. This localized differentiation ensures uniform effective pixel pitch across the entire tiled display surface.
Solution Approach 2:
The patent employs asymmetry in pixel arrangement by using different pixel configurations for edge pixels compared to central pixels. Edge pixels may be positioned at asymmetric locations or have different orientations to align with the seam geometry, creating a non-uniform local pattern that achieves uniform overall appearance when panels are tiled together.
2Ease of manufacture
If pixels are arranged uniformly across all sub-panels, then manufacturing is simplified, but seam gaps become visible as wide black strips affecting display quality
Solution Approach 1:
The patent implements local quality by applying different pixel arrangement rules to different regions: central pixels use standard uniform spacing for manufacturing simplicity, while edge pixels use specially designed configurations that account for seam geometry. This regional differentiation eliminates visible black strips at seams while maintaining ease of manufacture for the majority of pixels.
3Area of stationary object
If edge pixels are positioned closer to panel edges, then display area is maximized, but the spacing to adjacent panel pixels increases, creating excessive pixel pitch at seams
Solution Approach 1:
The patent applies parameter changes by adjusting the spacing parameters of edge pixels specifically. Instead of using a single uniform pitch parameter across all pixels, the patent modifies the spacing parameters for edge pixels to compensate for the gap to adjacent panels. This parameter adjustment ensures that the effective pixel pitch at seams matches the pitch in non-seam areas, while still maximizing display area.
Data Source
AI summary
A display panel includes a plurality of sub-panels tiled in sequence along a first direction. The sub-panels have a first edge and a second edge in the first direction. The sub-panels include a column of first pixels closest to the first edge, a column of second pixels closest to the second edge, and a plurality of columns of third pixels between the column of first pixels and the column of second pixels. A sum of a distance between effective display bodies in the first pixels and the first edge and a distance between effective display bodies in the second pixels and the second edge is smaller than a spacing between effective display bodies in two adjacent columns of the third pixels.