Rotating Magnet Plate Layout for OLED Mask Flatness
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The repulsive force generated between magnet units and masks in OLED manufacturing can cause the mask to fail to be attracted flat to the substrate, leading to manufacturing issues.
Innovation Solution
A deposition apparatus with rotating magnet units that adjust their polarity arrangement to align with the mask extension direction, using first and second magnet units with opposite polarities and rotating parts to ensure proper alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If magnet units are used to attract the mask to the substrate, then the mask can be held flat, but a repulsive force may be generated between the magnet units and the mask causing the mask to fail to be attracted flat
Solution Approach 1:
The magnet units are made rotatable around rotational axes to dynamically adjust their polarity arrangement. This allows the system to transition from a static magnetic configuration that generates repulsive forces to a dynamic configuration where magnet units can rotate to optimize magnetic attraction, thereby resolving the contradiction between maintaining mask flatness and avoiding repulsive forces
Solution Approach 2:
The invention changes the orientation parameter of the magnet units by enabling rotation. By altering the polarity arrangement through rotation, the magnetic field configuration is optimized to eliminate repulsive forces while maintaining attractive forces, thus resolving the force contradiction while preserving mask flatness
2Adaptability or versatility
If the magnet units are fixed in position, then the structure is simple, but they cannot adapt to different mask arrangement directions
Solution Approach 1:
By introducing rotational capability to the magnet units, the system gains adaptability to different mask arrangement directions without requiring multiple fixed magnet unit sets. The dynamic rotation mechanism allows a single structure to serve multiple orientations, achieving versatility while keeping the overall structure relatively simple
Solution Approach 2:
The rotatable magnet units serve multiple functions: they can adapt to different mask arrangement directions and optimize magnetic attraction for various configurations. This multi-functionality achieves adaptability without proportionally increasing structural complexity, as one rotating component replaces what would otherwise require multiple fixed components
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
The rotating magnet units effectively maintain the mask in a flat position against the substrate, preventing sagging and ensuring accurate deposition processes.
Implementation Method 1
magnet units connected to the rotating parts, and configured to be rotated by the rotating parts
Data Source
AI summary
Disclosed is a deposition apparatus comprising a mask frame having a frame shape, masks on the mask frame, a magnet plate on the masks, rotating parts connected to a lower portion of the magnet plate, and magnet units connected to the rotating parts, and configured to be rotated by the rotating parts such that polarities of the magnet units are arranged in a direction crossing an extension direction of the masks.