Spacer-Pattern Substrate for Uniform Gaps and Optical Defect Reduction
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Solution Overview
Problem
Existing optical devices face issues with maintaining a uniform gap between substrates, leading to optical defects such as diffraction phenomena and compromising durability, mechanical properties, and adhesive force, especially when using traditional spacers like ball or column spacers.
Innovation Solution
A substrate with a spacer pattern, including non-linear line spacers and partition spacers, is designed to maintain a stable gap between substrates, preventing optical defects and enhancing durability and adhesive force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ball or column spacers are used, then the gap between substrates can be maintained, but optical defects such as diffraction phenomenon occur and mechanical properties deteriorate
Solution Approach 1:
The spacer is divided into multiple finger-like projections extending from the first substrate toward the second substrate, creating multiple discrete support points rather than a single continuous structure. This segmentation reduces optical diffraction while maintaining gap uniformity.
Solution Approach 2:
The spacer structure transitions from traditional ball or column forms to a planar finger-like projection pattern that extends in multiple directions. This dimensional change from point/line spacers to area spacers reduces optical defects while maintaining mechanical support.
2Reliability
If ball or column spacers are used, then gap maintenance is possible, but adhesive force between substrates is insufficient
Solution Approach 1:
The spacer structure is integrated directly with the first substrate as a continuous formation, merging the spacer function with the substrate structure. This integration enhances adhesive force while maintaining gap uniformity throughout the device.
Solution Approach 2:
The finger-like projections have curved tips that contact the second substrate, distributing contact pressure and enhancing adhesive force through increased contact area compared to sharp-pointed spacers.
3Object-affected harmful factors
If irregularly arranged column spacers are used, then optical defects are reduced, but uniform gap maintenance becomes difficult
Solution Approach 1:
The finger-like projections are arranged in an asymmetric pattern that is intentionally non-uniform in spacing and orientation. This asymmetric arrangement reduces optical diffraction effects while the controlled design maintains acceptable gap uniformity.
Solution Approach 2:
Different regions of the spacer have different finger projection densities and orientations, optimizing local optical performance while maintaining overall gap maintenance. Each local area is designed with specific properties to address regional optical defects.
4Device complexity
If traditional spacers are used, then device structure is simple, but flexibility for curved configurations is limited
Solution Approach 1:
The spacer is designed as a thin, planar formation with finger-like projections that can bend and conform to curved surfaces. This flexible structure maintains gap maintenance capability while enabling curved and flexible device configurations.
Data Source
AI summary
The present application provides a substrate comprising a spacer pattern. The present application can provide a substrate, which is applied to various optical devices, capable of evenly and stably maintaining a gap between substrates while maximally securing an active region without causing any optical defects, including a diffraction phenomenon, and the like. The present application can also provide an optical device comprising the substrate.