Microcavity LCD Partition Wall Height Variation for Alignment Drying
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional liquid crystal displays experience light leakage and transmittance deterioration due to agglomeration of alignment material during the drying process in microcavity-based manufacturing, which affects the quality of the display.
Innovation Solution
The design includes a substrate with a roof layer and partition walls of varying heights, a blocking layer, and a capping layer to prevent alignment material agglomeration by ensuring independent drying within each microcavity, utilizing a pillar to direct the drying process and a stepped portion to facilitate even distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of stationary object
If alignment material is dried in microcavities during manufacturing, then the liquid crystal display can be formed with reduced weight and thickness, but the alignment material becomes agglomerated causing light leakage and transmittance deterioration
Solution Approach 1:
The partition wall divides the microcavity into multiple regions with different heights, creating segmented drying zones. The first region (higher) and second region (lower) allow controlled evaporation of alignment material, preventing agglomeration while maintaining the lightweight microcavity structure.
Solution Approach 2:
Different regions of the microcavity are given different heights to create localized quality variations. The first region has a higher partition wall than the second region, creating different drying characteristics in different locations to prevent uniform agglomeration across the entire microcavity.
2Ease of manufacture
If conventional drying process is used in microcavity liquid crystal display, then manufacturing is simplified, but alignment material agglomeration occurs leading to light leakage
Solution Approach 1:
The partition wall with different height regions segments the microcavity drying process, allowing alignment material to evaporate uniformly without agglomeration. This maintains manufacturing simplicity while eliminating the harmful agglomeration effect through structural design.
Solution Approach 2:
The partition wall introduces a vertical dimension variation (height difference) within the microcavity to control the drying process. By creating height differences between the first and second regions, the invention controls alignment material distribution in the vertical dimension to prevent horizontal agglomeration.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration prevents alignment material agglomeration, thereby reducing light leakage and maintaining high transmittance by ensuring independent drying in each microcavity, enhancing the overall quality of the liquid crystal display.
Implementation Method 1
In the process of drying the alignment material, a phenomenon in which the dried alignment material is agglomerated occurs
Data Source
AI summary
A liquid crystal display according to an exemplary embodiment of the present invention includes a substrate, a roof layer facing the substrate and shaped so as to at least partially define a plurality of microcavities, a liquid crystal layer disposed in the plurality of microcavities, and a partition wall which partitions adjacent ones of the microcavities and which includes at least two regions having different heights from each other.