Arcuate Display Circuit Layout for Uniform Brightness
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Solution Overview
Problem
Conventional arcuate display devices experience uneven brightness and chromaticity due to differences in driving circuits, leading to the appearance of dark or bright lines and misalignment of sub-pixels when displaying certain colors, particularly near the virtual axis.
Innovation Solution
The arcuate display device employs a design where driving devices corresponding to display units at the same minimum distance from the virtual axis have a unified circuit layout, ensuring that light-emitting elements of different colors are arranged in the same direction, thereby preventing parasitic resistance and capacitance effects on optical performance and aligning color emissions across the display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If different driving circuits are used to control display units at different sides of the virtual axis, then the display device can be manufactured with standard independent driving circuits, but uneven brightness and chromaticity occur due to circuit layout differences
Solution Approach 1:
The patent applies asymmetry by intentionally designing symmetric circuit layouts for display units at symmetric positions relative to the virtual axis. Specifically, display units at the same minimum distance from the virtual axis on opposite sides use identical circuit layout designs, which compensates for the natural asymmetry in signal transmission paths and eliminates brightness and chromaticity unevenness while maintaining manufacturing ease through standardized driving circuits
Solution Approach 2:
The patent implements equipotentiality by ensuring that display units at symmetric positions have equivalent circuit layout designs, creating equal electrical conditions for signal transmission. This approach equalizes the parasitic resistance and capacitance effects across symmetric display units, preventing brightness and chromaticity deviations without requiring complex non-standard driving circuits
2Ease of manufacture
If sub-pixels are sequentially arranged in pixels, then the pixel structure is simple and easy to manufacture, but dark or bright lines appear near the virtual axis due to distance differences
Solution Approach 1:
The patent applies asymmetry by arranging sub-pixels in sequential order (e.g., blue-green-red from left to right) in pixels at the first side of the virtual axis, while arranging them in reverse sequential order (e.g., red-green-blue from left to right, or blue-green-red from right to left) in pixels at the second side. This asymmetric arrangement compensates for the distance difference from the virtual axis, ensuring that sub-pixels at symmetric positions have equivalent optical paths and preventing dark or bright lines while maintaining simple pixel structures
Solution Approach 2:
The patent uses inversion by reversing the sub-pixel arrangement order in pixels at the second side compared to the first side. This inversion approach counteracts the asymmetric distance effect from the virtual axis, ensuring uniform display performance without complicating the pixel structure or manufacturing process
3Shape
If display units are arranged symmetrically at both sides of the virtual axis, then the overall device structure is balanced, but sub-pixel misalignment occurs when transposing display units by 180 degrees
Solution Approach 1:
The patent resolves sub-pixel misalignment by applying asymmetric sub-pixel arrangement strategies to symmetric display unit positions. Instead of simply transposing display units by 180 degrees (which would cause misalignment), the patent designs the sub-pixel sequences in symmetric positions to be asymmetrically arranged relative to each other, compensating for the geometric transformation and maintaining both device symmetry and sub-pixel alignment
Data Source
AI summary
An arcuate display device includes a plurality of display units each having has a plurality of pixels, a virtual axis, and a plurality of driving devices. Each pixel includes first, second, and third light-emitting elements respectively disposed at first, second, and third positions. The driving devices corresponding to the display units having the same minimum distance from the virtual axis have the same circuit layout design. The first, second, and third positions are sequentially arranged in a direction away from the virtual axis. Optical properties of the first light-emitting elements and the third light-emitting elements in at least a part of the pixels disposed at a first side of the virtual axis are respectively substantially the same as optical properties of the third light-emitting elements and the first light-emitting elements in at least a part of the pixels disposed at a second side of the virtual axis.