Liquid Crystal Display Panel Protrusion Groove Alignment
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Solution Overview
Problem
Liquid crystal display devices face issues with misalignment between the array substrate and the opposite substrate, leading to poor fit and reduced display quality, especially when subjected to pressure, such as in touch function applications.
Innovation Solution
The implementation of a liquid crystal display panel design that includes protrusions on one substrate and corresponding grooves on the other, strategically placed in non-display regions, to enhance alignment and fit between the substrates, thereby improving display quality and product yield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional flat substrate design is used, then manufacturing process is simple, but misalignment occurs between array substrate and opposite substrate under pressure
Solution Approach 1:
The substrate surface is segmented into protrusions and corresponding grooves, creating multiple localized alignment points distributed across the non-display region. This segmentation allows the substrates to maintain relative positioning through multiple contact points rather than relying on a single flat interface, thereby preventing misalignment under pressure.
Solution Approach 2:
The protrusions on one substrate are designed to fit into corresponding grooves on the other substrate, creating a nested interlocking structure. This nesting mechanism ensures that the array substrate and opposite substrate remain precisely aligned by physically constraining their relative positions, while the overall substrate structure remains relatively simple.
2Manufacturing precision
If protrusions and grooves are added to substrates, then alignment precision is improved, but manufacturing complexity increases
Solution Approach 1:
The protrusions and grooves are pre-formed on the substrates during the manufacturing process before final assembly. By incorporating these alignment features into the substrate fabrication process itself, the alignment precision is established upfront, eliminating the need for complex post-assembly alignment adjustments and simplifying the overall manufacturing workflow.
Solution Approach 2:
The protrusion-groove structure is designed to be self-aligning during assembly. The geometric complementarity of the protrusions and grooves automatically guides the substrates into correct alignment when brought together, reducing the need for external alignment tools or complex manufacturing procedures while maintaining high alignment precision.
3Ease of operation
If substrates are made flat and simple, then manufacturing is easier, but movement between substrates cannot be restricted under pressure
Solution Approach 1:
The protrusions and grooves introduce asymmetric geometric features to the otherwise flat substrate surfaces. These asymmetric interlocking features physically restrict movement between substrates in specific directions while maintaining overall substrate simplicity. The asymmetric design ensures that the substrates fit together precisely and cannot shift relative to each other under pressure, improving ease of operation without excessive complexity.
Data Source
AI summary
A liquid crystal display panel includes an array substrate and an opposite substrate that are disposed opposite to each other; the liquid crystal display panel has a display region and at least one non-display region disposed beside the display region. The array substrate is of a multi-layer structure and includes a pixel electrode layer and a plurality of protrusions disposed in the at least one non-display region, and the opposite substrate includes a common electrode layer. A protrusion has a structure including at least one film, and a film of the at least one film is located in a layer included in the array substrate.