OLED Mask Plate Quickset Segmentation for Reuse
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Solution Overview
Problem
The existing OLED material vacuum thermal evaporating mask plates face issues with deformation and wear, leading to increased waste and production costs due to the need for frequent replacement and polishing of the mask frame, which results in thinning and eventual disposal of the mask frame.
Innovation Solution
The introduction of a quickset system that allows the mask frame to be reused by extracting only the quickset for polishing, eliminating the need to send the entire mask frame to a large polishing grinder, thereby reducing waste and extending the life of the mask frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If the mask frame is repeatedly polished to remove hardened layers and maintain planeness, then the mask frame can be reused, but the thickness gradually becomes thinner, influencing structure strength and alignment location
Solution Approach 1:
The mask assembly is segmented into three independent components: mask frame, quickset, and mask. The quickset is designed as a separate replaceable component that can be detached from the mask frame. When polishing is needed, only the quickset is removed and polished, while the mask frame remains intact and is not subjected to thickness reduction
Solution Approach 2:
The quickset is extracted as a separate replaceable component from the mask frame. The quickset includes the aperture structure and can be independently removed for polishing or replacement. This extraction allows the mask frame to be preserved from polishing operations, preventing thickness loss and maintaining structural integrity
2Manufacturing precision
If the mask frame is sent to a large polishing grinder for grinding and polishing, then the surface planeness is restored, but time is wasted and production cost increases
Solution Approach 1:
The mask assembly is segmented into mask frame and quickset components. The quickset is designed as a separate replaceable unit that can be independently polished. This segmentation allows polishing operations to be performed on a smaller, faster machine rather than requiring a large polishing grinder for the entire mask frame assembly
Solution Approach 2:
The quickset is extracted as a separate component that requires polishing. By removing and polishing only the quickset rather than the entire mask frame assembly, the polishing process can be completed more quickly on smaller equipment, reducing time loss and production costs
3Manufacturing precision
If the mask frame is polished many times, then the surface quality is maintained, but the thickness becomes thinner and the mask frame needs to be wasted
Solution Approach 1:
The mask assembly is segmented into mask frame and quickset. The quickset is designed as a sacrificial component that can be repeatedly polished without affecting the mask frame. This segmentation protects the mask frame's structural strength by preventing cumulative thickness loss from repeated polishing operations
Solution Approach 2:
The quickset is extracted as a separate replaceable component that bears the polishing wear. By removing the quickset for polishing instead of polishing the mask frame, the mask frame's thickness and structural strength are preserved, eliminating the need to waste the mask frame after multiple polishing cycles
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
This solution reduces material and production costs by allowing the mask frame to be reused, minimizing the need for spare frames and quicksets, and simplifying the replacement process, thus saving time and resources.
Implementation Method 1
After reaching the gasification temperature of the OLED material 200, the OLED material 200 becomes gas and sublimates to pass through the aperture of the mask plate 300
Implementation Method 2
The gas molecules are deposed on the surface of the substrate 400, and become solid state molecules as temperature descends. Molecules of OLED material constantly accumulate and slowly form a thin film on the substrate 400
Implementation Method 3
In a vacuum environment which is smaller than 10−5 Pa, the temperature of the crucible 100 slowly ascends. After reaching the gasification temperature of the OLED material 200
Implementation Method 4
the OLED material 200 becomes gas and sublimates
Data Source
AI summary
The present invention provides an OLED material vacuum thermal evaporating mask plate, comprising a mask frame (1), a quickset (3) fixed on the mask frame (1) and a mask (5) fixed on the quickset (3); the mask frame (1) comprises four edges, and the four edges surround to form an opening corresponding to the mask (5); each edge of the mask frame (1) comprises a groove (11) dented at the upper surface; the quickset (3) is fixed in the groove (11); the mask (5) is fixed on the quickset (3) by point weld, and welding points (7) are on the quickset (3). When the mask deforms and the replacement is necessary, only the quickset is extracted for polishing or is replaced. The mask frame can be repeatedly used to diminish the waste amount and to raise the availability of the mask frame. Meanwhile, the spare amount of the mask frame can be reduced to save material and production cost.