Liquid Crystal Display Spacer Structure for Impact Resistance
Solution Overview
Problem
Liquid crystal display devices face challenges in maintaining high-quality display characteristics and physical impact resistance due to spacer misalignment and unevenness, which can lead to damage and display defects.
Innovation Solution
The implementation of a spacer structure that projects into the liquid crystal composition from the substrate surface, with a continuous film structure ensuring stable adhesion and wide placement area, reducing misalignment issues and enhancing resistance to physical impact. This structure includes tapered and rib-shaped structure bodies with pixel and common electrode layers covering their surfaces, allowing for efficient electric field application and improved blue phase liquid crystal control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spacer is provided on a substrate surface with unevenness or steps, then the spacer can be placed, but the spacer may be damaged or have poor adhesion due to physical impact
Solution Approach 1:
A structure body is formed on the substrate surface before the spacer is placed. This structure body creates a flat, elevated platform that prevents the spacer from contacting the uneven substrate surface directly, thereby protecting the spacer from physical impact damage and ensuring stable adhesion.
Solution Approach 2:
The structure body acts as an intermediary between the substrate and the spacer. It mediates the interaction by providing a protected, flat placement surface, isolating the spacer from the harmful uneven substrate surface and physical impact.
2Reliability
If the structure body is formed using one continuous film, then the spacer can be stably provided with good adhesion, but the manufacturing process becomes more complex
Solution Approach 1:
The structure body is formed as a single continuous film that extends across the substrate surface. By merging the film into one continuous structure, the spacer gains stable adhesion and consistent placement stability, while the continuous nature simplifies the overall formation process compared to assembling multiple separate components.
3Manufacturing precision
If the structure body extends to a region where the spacer is formed, then the spacer can be stably placed with wide area, but the pixel electrode layer and common electrode layer arrangement becomes more complex
Solution Approach 1:
The structure body extends in the horizontal dimension across the substrate surface to provide a wide, flat placement area for the spacer. This dimensional extension allows the spacer to be positioned with high precision and stability without complicating the vertical stacking arrangement of the electrode layers.
Data Source
AI summary
A liquid crystal display device which is resistant to physical impact and can retain high-quality display characteristics is provided. Further, a liquid crystal display device with high reliability and high performance is provided. In a liquid crystal display device in which a liquid crystal composition is interposed between a pair of substrates, a spacer for keeping a gap between the substrates is provided over a structure body provided under a pixel electrode layer or a common electrode layer. The structure body is provided to make the pixel electrode layer and the common electrode layer project into the liquid crystal composition, and the structure body is provided to extend to a region where the spacer is provided. Since the structure body is formed using one continuous film, regions of the surface thereof have substantially the same height and the spacer can be stably provided with good adhesion.