Patterning Slit Sheet Frame Assembly Tension Control
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Solution Overview
Problem
Existing patterning slit sheet frame assemblies face challenges in applying tensile force after the slit sheet is welded to the frame, leading to potential drooping and non-uniform deposition patterns due to self-weight, which affects pixel position accuracy and opening sizes.
Innovation Solution
A patterning slit sheet frame assembly that includes a tensile force application unit, which can be disposed on the inner surface of the frame to apply tension to the slit sheet even after it is welded, using multiple units that ascend or descend along the frame to maintain the slit sheet's integrity and prevent drooping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the patterning slit sheet is welded to the patterning slit sheet frame, then the sheet is fixed in position, but the sheet cannot have tensile force applied afterward to prevent drooping
Solution Approach 1:
The system transitions from a static welded connection to a dynamic adjustable system. The tensile force application unit can be moved along the inner surface of the frame and engaged with the outer portion of the sheet at different positions, allowing the sheet to be tightened after welding to compensate for drooping while maintaining fixed positioning.
Solution Approach 2:
The frame is divided into multiple segments with accommodation grooves at different positions along the inner surface. The tensile force application unit can be selectively engaged with different segments depending on the degree of drooping, providing modular adjustment capability without requiring complete redesign of the welding structure.
2Reliability
If multiple tensile force application units are added to adjust sheet tension, then drooping is prevented, but the device complexity increases
Solution Approach 1:
Multiple tensile force application units are nested within accommodation grooves on the inner surface of the frame. Each unit can be independently engaged or disengaged, allowing selective application of tensile force at different locations. This nesting arrangement minimizes space requirements and reduces overall structural complexity while maintaining the capability to prevent drooping.
3Ease of operation
If the tensile force application unit is disposed on the inner surface of the frame, then access to the sheet is improved, but the unit requires accommodation space within the frame structure
Solution Approach 1:
The accommodation grooves are designed as thin-walled recesses on the inner surface of the frame, utilizing the frame's own wall thickness to provide accommodation space. This approach minimizes the volume consumed by the tensile force application units while maintaining ease of operation, as the units can be accessed from the inner surface without requiring large external structures.
Data Source
AI summary
A patterning slit sheet frame assembly includes a patterning slit sheet having a pattern, a patterning slit sheet frame supporting the patterning slit sheet, and a tensile force application unit that applies a tensile force to the patterning slit sheet after the patterning slit sheet is disposed on the patterning slit sheet frame.