Dummy Sub-Pixel Shape Variation for Display Process Margin
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Solution Overview
Problem
Existing organic light emitting display devices face challenges in manufacturing process variations and side effects due to the uniform formation of dummy sub-pixels without considering their purpose, which affects the display panel's quality and efficiency.
Innovation Solution
The organic light emitting display device incorporates dummy sub-pixels with varying shapes, numbers, and arrangements in non-display areas to compensate for process variations and side effects, optimizing the manufacturing process by customizing their configuration for each position based on the display panel's structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If dummy sub-pixels are formed uniformly without considering position, then manufacturing process is simple, but process variation and side effects increase
Solution Approach 1:
The patent applies local quality by configuring dummy sub-pixels differently according to their position in the non-display area. Specifically, dummy sub-pixels at different locations (e.g., corners vs. edges vs. center) have different shapes, sizes, or numbers to compensate for position-specific process variations and side effects during manufacturing, thereby improving overall manufacturing precision without uniform complexity
Solution Approach 2:
The patent segments the non-display area into multiple regions and assigns different dummy sub-pixel configurations to each region. This segmentation allows targeted compensation for process variations in different areas, improving manufacturing precision while managing complexity through systematic regional differentiation
2Manufacturing precision
If dummy sub-pixels are added to compensate process variation, then manufacturing precision improves, but device structure becomes more complex
Solution Approach 1:
The patent implements local quality by tailoring dummy sub-pixel characteristics (shape, size, number) to specific locations in the non-display area. This localized approach compensates for position-dependent process variations effectively while avoiding the need for complex uniform structures across the entire device
Solution Approach 2:
The patent employs parameter changes by varying dummy sub-pixel parameters (such as area, shape factors, or quantity) based on position within the non-display area. These parameter adjustments enable precise compensation for process variations without requiring fundamentally complex structural changes to the device
3Object-affected harmful factors
If dummy sub-pixels are formed with varying configurations, then side effects are reduced, but manufacturing complexity increases
Solution Approach 1:
The patent applies local quality by designing dummy sub-pixels with position-specific configurations in the non-display area. Different locations receive dummy sub-pixels optimized for their local conditions, which reduces position-dependent side effects while maintaining a relatively simple manufacturing process through systematic variation rather than complex multi-step procedures
Data Source
AI summary
Provided are an organic light emitting display device, the display device including: a substrate defined into a display area and a non-display area; sub-pixels formed on the display area of the substrate; and dummy sub-pixels formed on the non-display area of the substrate, the dummy sub-pixels have a different shape for each position of the non-display area.