Mask Member Support Layout for Deformation-Resistant Deposition
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Solution Overview
Problem
Existing mask assemblies for flat panel display devices face challenges in stably depositing materials due to changes in the mask member, which can affect the precision and consistency of the deposition process.
Innovation Solution
The mask assembly includes a frame with a mask stick and a mask member featuring supporting parts with varying widths and thicknesses, including main and auxiliary supporting parts with specific configurations to enhance stability and rigidity, minimizing deformation and ensuring precise deposition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the mask member is made with uniform supporting parts, then the structure is simple and easy to manufacture, but the mask member deforms during deposition and manufacturing precision deteriorates
Solution Approach 1:
The patent applies local quality by making the supporting parts have non-uniform dimensions. Specifically, the first supporting part has a first width and the second supporting part has a second width that is different from the first width. This local variation in dimensions provides differential support to different regions of the mask member, preventing deformation during the deposition process while maintaining manufacturing feasibility through standardized fabrication techniques.
2Stability of the object's composition
If the mask member is made with non-uniform supporting parts of varying widths and thicknesses, then the mask member stability and rigidity are improved, but the device complexity increases
Solution Approach 1:
The patent implements local quality by providing supporting parts with different dimensional characteristics. The first supporting part and second supporting part have different widths and/or thicknesses tailored to their specific structural requirements. This localized differentiation enhances overall stability without requiring complete redesign of the entire mask member, thus managing complexity effectively.
Solution Approach 2:
The mask member is segmented into multiple supporting parts (first supporting part and second supporting part) that can be independently designed and optimized. Each segment handles specific structural challenges, allowing the complex stability requirement to be broken down into manageable local optimizations rather than a monolithic complex design.
Data Source
AI summary
A mask assembly includes a frame in which an opening is defined, a mask stick disposed on the frame and in which a plurality of pattern openings are defined, and a mask member disposed on the frame and including a plurality of supporting parts covering at least a portion of the pattern openings to form a deposition area, where at least one supporting part among the plurality of supporting parts is wider in width or thicker in thickness than other supporting parts.