Mask Sheet Support Plate and Clamps for Flat Precision Joining
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Solution Overview
Problem
Manufacturing large metal masks for display devices is costly due to the need for large mask sheets, and existing methods struggle to join divided sheets effectively without causing sagging and uneven surfaces, leading to precision issues and defective display devices.
Innovation Solution
A mask sheet support device with a support plate and clamps, featuring a detachable damage preventing plate and movable clamps, ensures flat and precise joining of divided sheets by adjusting sagging through perpendicular movements of the support plate and clamps, facilitating the formation of large mask sheets for metal masks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If large mask sheets are used to manufacture large metal masks, then the manufacturing cost increases, but the precision and quality of the mask deteriorates due to sagging and uneven surfaces
Solution Approach 1:
The patent divides the large mask sheet into multiple smaller mask sheets that are joined together. This segmentation allows each sheet to be handled and processed more easily, preventing sagging and maintaining precision while reducing the overall manufacturing cost compared to producing a single large sheet.
Solution Approach 2:
The patent introduces a support plate as an intermediary tool during the joining process. The support plate provides a stable base and flat surface that prevents sagging of the mask sheets during joining operations, ensuring precise alignment and flat surfaces without requiring expensive large-scale manufacturing processes.
2Ease of manufacture
If mask sheets are joined together to form large masks, then the ease of manufacture improves, but the manufacturing precision deteriorates due to sagging and uneven surfaces
Solution Approach 1:
The support plate serves as an intermediary that provides a stable, flat working surface during the joining process. This intermediary tool prevents the mask sheets from sagging and ensures precise alignment, allowing multiple sheets to be joined together easily while maintaining high joining precision and flat surfaces.
Solution Approach 2:
The patent employs preliminary actions by positioning the mask sheets on the support plate before joining operations. This preliminary arrangement ensures proper alignment and prevents sagging during the joining process, maintaining precision while facilitating easy joining of multiple sheets.
3Manufacturing precision
If a support plate is used to prevent sagging of mask sheets, then the manufacturing precision improves, but the device complexity increases
Solution Approach 1:
The support plate is designed as a simple, segmented structure with a body portion and a detachable damage preventing plate. This segmentation keeps the device structure relatively simple while providing the necessary functionality to prevent sagging and maintain surface flatness during mask sheet joining operations.
Solution Approach 2:
The damage preventing plate is designed to be detachable and replaceable, suggesting a design philosophy where simpler, potentially disposable or easily replaceable components are used rather than complex, permanent structures. This reduces overall device complexity while maintaining manufacturing precision.
Data Source
AI summary
A mask sheet support device is disclosed that includes a support plate and a plurality of clamps. The support plate is configured to support a plurality of mask sheets. The support plate includes a body portion and a damage preventing plate disposed on one surface of the body portion. The plurality of clamps are configured to clamp the plurality of mask sheets. The plurality of clamps are spaced apart from the support plate and disposed along edges of the support plate.