Variable-Size Multiplexers for Non-Rectangular Display Feed-Through
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Solution Overview
Problem
In non-rectangular display panels, the varying number of sub-pixels connected to data lines in different positions leads to inconsistent parasitic capacitance, causing a greater feed-through effect in data lines with fewer sub-pixels, which affects display quality.
Innovation Solution
The display device incorporates a first and second multiplexer with different sizes, where the first multiplexer is smaller than the second, and their channel widths are adjusted to reduce the impact of parasitic capacitance, ensuring consistent feed-through effects across different display areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If uniform multiplexer size is used across the display area, then manufacturing is simplified, but feed-through effect becomes inconsistent in non-rectangular displays
Solution Approach 1:
The patent applies local quality by making multiplexer size position-dependent within the display area. Multiplexers are categorized into different size groups (first, second, third sizes) based on their location, with each size optimized for the local sub-pixel count characteristics of that region. This resolves the contradiction by sacrificing global uniformity for local optimization, ensuring feed-through effect consistency across the entire display.
Solution Approach 2:
The patent changes the physical parameter of multiplexer size (area, dimensions) based on spatial position within the display. By adjusting multiplexer dimensions to match local requirements - smaller multiplexers in regions with fewer sub-pixels, larger multiplexers in regions with more sub-pixels - the feed-through effect is standardized across the display area despite position-dependent variations in connected sub-pixel counts.
2Reliability
If multiplexer size is adjusted to match sub-pixel count, then feed-through effect consistency is improved, but device complexity increases
Solution Approach 1:
The patent implements local quality by dividing the display area into regions with different multiplexer size requirements. Instead of using a single complex variable-size multiplexer throughout, it employs discrete size categories (first, second, third sizes) that can be systematically assigned to different display regions based on sub-pixel count characteristics, managing complexity through standardization.
Solution Approach 2:
The patent manages device complexity by changing discrete parameters (multiplexer size categories) rather than continuous parameters. By defining a limited set of multiplexer sizes (first, second, third sizes) with specific area relationships, the system achieves feed-through effect consistency while maintaining manufacturable, standardized components rather than requiring fully custom-sized multiplexers for each position.
Data Source
AI summary
A display device includes a first display area, a second display area, a first multiplexer, and a second multiplexer. The first display area includes a plurality of first data lines. The second display area is adjacent to the first display area and includes a plurality of second data lines. The first multiplexer is electrically connected to one of the first data lines. The second multiplexer is electrically connected to one of the second data lines. The first data line is electrically connected to a first number of sub-pixels. The second data line is electrically connected to a second number of sub-pixels. The first number is less than the second number. The size of the first multiplexer is smaller than that of the second multiplexer.