Variable Cell Gap LCDs via Column Spacer Placement
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Solution Overview
Problem
Existing liquid crystal display (LCD) technologies face challenges in achieving wide viewing angles due to the uniform cell gaps across liquid crystal cells of varying sizes, limiting the ability to manufacture LCDs with optimized viewing angles for each cell size.
Innovation Solution
The solution involves forming liquid crystal cells with different cell gaps by strategically positioning column spacers on the substrates, allowing for varied cell gaps and sizes on a single mother glass substrate, enabling the creation of LCDs with tailored viewing angles by controlling the placement of column spacers during the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If uniform column spacers are used across all liquid crystal cells, then the manufacturing process is simple and consistent, but the viewing angle cannot be optimized for different cell sizes
Solution Approach 1:
The patent applies local quality by making the column spacer height variable depending on the specific liquid crystal cell region. Different heights of column spacers are provided in different regions corresponding to different liquid crystal cell sizes, allowing each region to achieve optimal viewing angle characteristics while maintaining a unified manufacturing process framework.
2Adaptability or versatility
If different column spacer heights are used for different liquid crystal cell sizes, then the viewing angle is optimized for each cell, but the manufacturing process becomes more complex
Solution Approach 1:
The patent segments the liquid crystal display into different regions, each corresponding to a specific liquid crystal cell size. Within each region, column spacers of uniform height are used, simplifying the manufacturing process for each segment while allowing different heights across different segments to optimize viewing angles for each cell size.
3Manufacturing precision
If all liquid crystal cells have the same cell gap, then the manufacturing process is consistent and simple, but the viewing angle characteristics are uniform and cannot be optimized for different sizes
Solution Approach 1:
The patent implements local quality by varying the cell gap dimensions in different regions according to the liquid crystal cell sizes. Column spacers of different heights are positioned in different regions to create appropriate cell gaps for each cell size, enabling optimized viewing angle characteristics while maintaining consistent manufacturing processes within each region.
Data Source
AI summary
A mother glass panel for manufacturing a plurality of liquid crystal displays (LCD) includes a first substrate; a second substrate attached to the first substrate, wherein column spacers are disposed between the first and second substrates to form cell gaps; and a liquid crystal layer interposed between the first substrate and the second substrate, wherein, the mother glass panel defines a plurality of liquid crystal display regions and at least two of the liquid crystal display regions have different cell gaps.