Elliptical Recess Printing Plate for Uniform Spacer Distribution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing printing methods for manufacturing spacers in liquid crystal display (LCD) panels result in non-uniform coating, leading to insufficient spacers in certain areas, which can cause display defects such as spots or flickers due to inconsistent cell gap maintenance.
Innovation Solution
A printing apparatus with a printing plate featuring elliptical recesses that hold beads, allowing for a controlled transfer of beads onto a substrate, ensuring a more uniform distribution of spacers between the substrates, thereby maintaining a stable cell gap and enhancing display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional printing plates are used with standard recesses, then the printing process is simple, but the bead distribution becomes non-uniform and insufficient
Solution Approach 1:
The printing plate surface is segmented into multiple recesses, each capable of holding a specific number of beads. This segmentation allows precise control over bead distribution, ensuring uniform spacing and preventing bead accumulation in certain areas while maintaining simplicity in the overall printing plate structure.
Solution Approach 2:
Each recess on the printing plate is designed with specific local characteristics (depth, width, shape) optimized for holding a predetermined number of beads. This local quality customization ensures that each region of the printing plate contributes uniformly to the overall bead distribution pattern on the substrate.
2Reliability
If insufficient spacers are provided in certain areas, then the manufacturing process is simpler, but the cell gap cannot be maintained leading to display defects
Solution Approach 1:
The recesses are pre-configured on the printing plate with specific capacities to hold predetermined numbers of beads. This preliminary arrangement ensures that when beads are transferred to the substrate, they are distributed uniformly from the outset, preventing insufficient spacer coverage in any particular area and ensuring reliable cell gap maintenance throughout the display panel.
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
The solution increases the number of spacers per unit area, providing more uniform coverage and improving the display panel's press characteristics and overall quality by maintaining a consistent distance between substrates, preventing smear defects and enhancing display performance.
Implementation Method 1
The receiving recesses are configured to hold a plurality of beads. The printing roller transfers the beads in the receiving recesses onto an outer surface of the printing roller by rolling over the receiving recesses
Data Source
AI summary
A printing apparatus for manufacturing a spacer includes a printing plate and a printing roller. The printing plate has a plurality of receiving recesses formed thereon. The receiving recess has a generally elliptical shape. The receiving recesses are infiltrated with a plurality of beads. The printing roller transfers the beads onto its outer surface by rolling over the receiving recesses, and transfers the beads from its outer surface onto an external substrate. Thus, the spacers may maintain a distance between the first and second substrates stably, so that press characteristics may be enhanced and smear defects occurring when the display panel is pressed may be prevented.