LED Module Sub-Pixel Edge Layout to Eliminate Splicing Color Lines
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Solution Overview
Problem
LED display devices suffer from color lines at splicing seams due to uniform sub-pixel colors on either side of the seams, leading to issues like yellow, cyan, or pink lines, which degrade the display effect.
Innovation Solution
The LED display module is designed with pixel rows that include multiple types of sub-pixels, ensuring that light emitted from the edges of spliced modules is a mixture of at least two or three colors, thereby eliminating the uniformity of sub-pixel colors at the seams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If LED display modules are spliced to form large area displays, then the display area and resolution are improved, but color lines appear at the splicing seams due to uniform sub-pixel colors on both sides of the seams
Solution Approach 1:
The patent applies local quality by making the sub-pixel color arrangement at the edge rows different from the interior rows. Specifically, the first row and last row of sub-pixels use a mixed color arrangement (containing at least two types of sub-pixels), while intermediate rows use uniform color arrangement. This local differentiation at the splicing boundaries prevents color line formation while maintaining the benefits of large area splicing.
Solution Approach 2:
The patent introduces asymmetry in the sub-pixel color distribution at the edge rows compared to interior rows. The edge rows have a non-uniform color pattern (mix of different sub-pixel types) while interior rows have uniform color patterns. This asymmetric design ensures that when modules are spliced, the mixed colors at the boundaries prevent the formation of monochromatic color lines, thereby resolving the contradiction between large area display and color line prevention.
2Ease of manufacture
If uniform sub-pixel colors are used in each row for simple manufacturing, then the manufacturing process is simplified, but color lines appear at splicing seams degrading display quality
Solution Approach 1:
The patent segments the sub-pixel rows into three categories: first row (mixed colors), intermediate rows (uniform colors), and last row (mixed colors). This segmentation allows the majority of rows to maintain simple uniform color arrangements for easy manufacturing, while only the edge rows require the more complex mixed color arrangement to prevent color lines. The segmentation minimizes the impact on manufacturing simplicity while solving the display quality issue at splicing seams.
Data Source
AI summary
A LED display module includes multiple pixel rows. A first pixel row includes a plurality of first pixel units. Each of the plurality of first pixel units includes a first sub-pixel, a second sub-pixel, and a third sub-pixel. Sub-pixels of the plurality of first pixel units form at least one first sub-pixel row. A first row of the at least one first sub-pixel row includes at least two types of the first sub-pixel, the second sub-pixel, and the third sub-pixel. A last pixel row includes multiple second pixel units. Each of the plurality of second pixel units includes a first sub-pixel, a second sub-pixel, and a third sub-pixel. Sub-pixels of the plurality of second pixel units form at least one second sub-pixel row. A last row of the at least one second sub-pixel row includes at least two types of the first sub-pixel, the second sub-pixel, and the third sub-pixel.