OLED Mask Frame Segmentation for Deformation Control
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Solution Overview
Problem
Existing mask assemblies for organic light emitting diode displays are prone to deformation due to tensile force applied in the longitudinal direction, which complicates the patterning of organic emission layers and increases the risk of deposition errors.
Innovation Solution
A frame design that minimizes deformation by incorporating a combination of through holes, grooves, and sloping sides, which disperses tensile force and reduces weight, thereby supporting unit masks effectively while maintaining structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a frame supports unit masks by applying tensile force in the longitudinal direction, then the unit masks are securely held, but the frame is unintentionally deformed by the tensile force
Solution Approach 1:
The frame is divided into multiple longitudinal members arranged parallel to each other, with each member independently supporting portions of the unit masks. This segmentation distributes the tensile force across multiple discrete structural elements rather than concentrating it in a single continuous frame, thereby reducing overall frame deformation while maintaining secure mask holding.
2Stability of the object's composition
If the frame structure is made more robust to resist deformation, then structural integrity is improved, but weight and material usage increase
Solution Approach 1:
By segmenting the frame into multiple slender longitudinal members rather than using a single massive continuous structure, the frame achieves sufficient structural integrity through distributed load-bearing capacity while minimizing the total material volume and weight required.
Solution Approach 2:
The frame structure utilizes a three-dimensional arrangement of longitudinal members with specific spacing and positioning, creating structural stability through spatial configuration rather than relying solely on increased material thickness or density, thereby maintaining integrity while reducing weight.
Data Source
AI summary
A frame and a mask assembly having the same. The frame supports both ends of each unit mask, each unit mask applying a tensile force in a first direction. The frame includes a frame main body part forming an opening exposing the unit mask, and a first through hole formed by passing through the frame main body part.