LCD Panel Groove Design Prevents Alignment Layer Diffusion
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Solution Overview
Problem
In the manufacturing of liquid crystal display (LCD) panels, the alignment material often overlaps with the sealant, affecting cell quality and leading to waste and increased costs due to diffusion issues.
Innovation Solution
A blind groove is created on the black matrix around the alignment layer, with the sealant placed outside the groove, preventing diffusion and overlap, and a shading layer is used to prevent light leakage, simplifying the manufacturing process and improving cell quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If alignment material is injected to form an alignment layer, then the alignment layer is formed, but the alignment material is easy to expand and overlap with sealant, affecting cell quality
Solution Approach 1:
The invention divides the black matrix into multiple regions by setting grooves, creating separate zones for alignment material and sealant. This segmentation prevents the alignment material from expanding into and overlapping with the sealant region, thus maintaining both positioning precision and cell quality.
Solution Approach 2:
The groove acts as an intermediary barrier between the alignment layer and sealant. By introducing this intermediate structure, the direct contact and potential overlap between alignment material and sealant is prevented, resolving the contradiction between forming the alignment layer and maintaining cell quality.
2Ease of manufacture
If the groove penetrates through the black matrix to the substrate, then the processing technology is simple, but light leakage occurs due to the groove penetrating through the black matrix
Solution Approach 1:
The invention extracts only the necessary depth of the groove to reach the substrate without creating through-holes. By removing material only to the required depth and filling it with alignment material, the structure prevents light leakage while maintaining simple processing.
Solution Approach 2:
The groove is filled with alignment material that serves as a temporary structure during manufacturing. This alignment material-filled groove structure effectively blocks light leakage without requiring complex additional shading components, simplifying the overall manufacturing process.
3Object-affected harmful factors
If a shading layer is disposed on the opening of the groove, then light leakage is prevented, but additional manufacturing process and equipment are required
Solution Approach 1:
The invention merges the groove structure with the alignment material filling process. The alignment material itself serves the dual function of providing alignment properties and preventing light leakage, eliminating the need for separate shading layers and reducing manufacturing complexity.
Solution Approach 2:
The alignment material is given multiple functions: it provides the necessary alignment properties for liquid crystal orientation and simultaneously acts as a light-blocking structure by filling the groove. This multi-functionality eliminates the need for additional shading components and simplifies the manufacturing process.
4Manufacturing precision
If multiple grooves are arranged around the alignment layer, then the diffusion of alignment material is better limited, but the manufacturing complexity increases
Solution Approach 1:
The invention applies grooves only at specific critical locations around the alignment layer where alignment material diffusion is most likely to occur. This localized approach provides effective diffusion control without the need for complex multi-directional groove structures, balancing precision with manufacturing simplicity.
Data Source
AI summary
The present disclosure provides a liquid crystal display panel, an liquid crystal display apparatus, and a method for manufacturing same. The liquid crystal display panel includes a substrate, a black matrix disposed on the substrate, an alignment layer disposed on the black matrix, and a groove disposed on the black matrix and arranged around the alignment layer, wherein the sealant is arranged on an outside of the groove, to prevent diffusion of the alignment layer according to feature of the groove, avoid overlap of the alignment layer and the sealant and improve the cell quality.