Printing Plate Blanket Support for LCD Pattern Precision
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Solution Overview
Problem
The existing printing methods for forming patterns in LCD devices face challenges in achieving precision due to contact between pattern material and concave portions of the printing plate, leading to undesired pattern transfer and difficulty in predicting pattern formation on concave areas.
Innovation Solution
A printing plate with convex and concave portions, including a blanket support in the concave portion to prevent direct contact between the pattern material and the concave area, ensuring uniform transfer of the pattern material onto the convex portion and maintaining precision in pattern formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the printing roll is rotated on the printing plate with concave and convex portions, then the pattern material is transferred onto the convex portion to form a pattern, but the pattern material contacts the concave portion causing undesired pattern transfer and imprecision
Solution Approach 1:
The harmful concave portions are removed from the printing plate surface, leaving only the convex portions that correspond to the desired pattern. This extraction eliminates the source of undesired pattern transfer while maintaining the beneficial pattern formation on convex areas.
Solution Approach 2:
The printing plate is designed with non-uniform surface topology where only specific convex portions exist rather than a uniform flat or concave-convex pattern. This local differentiation ensures that pattern material is transferred only to the intended areas, improving pattern precision by eliminating unwanted transfer zones.
2Adaptability or versatility
If the blanket swells or the concave portion is large, then the pattern material contacts the concave portion, but this causes unpredictable pattern formation and transfer issues
Solution Approach 1:
By removing concave portions from the printing plate, the design eliminates the problematic interaction between pattern material and concave areas that occurs during blanket swelling. The extracted concave portions are replaced with flat or convex surfaces that do not cause unwanted material transfer.
Solution Approach 2:
The printing plate design proactively prevents the harmful effect of blanket swelling by eliminating concave portions before the swelling occurs. This preliminary design choice counteracts the potential negative impact of blanket dimensional changes during the printing process.
3Manufacturing precision
If the photolithographic process is used to form patterns, then precise patterns can be formed, but the fabricating cost increases and process steps become complicated
Solution Approach 1:
The mechanical printing process replaces the photolithographic system, eliminating the need for masks, light sources, exposure, and development processes. The pattern transfer is achieved through direct mechanical contact between the printing roll and substrate, simplifying the overall fabrication process while maintaining precision through controlled material transfer.
Solution Approach 2:
The printing plate serves as a direct physical copy or mold of the desired pattern, transferring the pattern through mechanical contact rather than through optical exposure and chemical development. This copying mechanism eliminates multiple process steps while maintaining pattern fidelity through the precision of the printing plate design.
Data Source
AI summary
A printing plate and a method of fabricating an LCD device are disclosed. The printing plate includes convex and concave portions, and a blanket support formed in the concave portion to prevent the bottom of the concave portion from being directly in contact with a pattern material coated on a blanket of a printing roll. The blanket support is additionally formed in the concave portion of the printing plate to prevent the pattern material coated on the blanket of the printing roll from being directly in contact with the bottom of the concave portion. In this case, the pattern material can be prevented from being transferred onto the printing plate in an undesired pattern. As a result, it is possible to form a precise pattern.