Mask Plate Carrying Platform with Multi-Rod Securing Structure
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Solution Overview
Problem
In the manufacturing of active-matrix organic light emitting diode (AMOLED) display devices, the instability of mask plates on carrying platforms leads to color mixing at the edges of display devices due to uneven force distribution and misalignment, caused by the limitations of traditional bearing systems.
Innovation Solution
A carrying platform with a securing structure featuring multiple supporting rods, including spherical ends and an adjustment mechanism, engages with a mask plate's securing structure to stabilize and adjust the mask plate's position, allowing it to rotate and fix relative to the platform, reducing edge force and misalignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a traditional bearing system is used to hold the mask plate, then the mask plate can be positioned on the carrying platform, but the position becomes unstable due to uneven force distribution
Solution Approach 1:
The single bearing system is segmented into multiple supporting rods (typically three or more) distributed around the mask plate. Each rod independently supports the mask plate at different locations, distributing the forces evenly and preventing the instability caused by concentrated bearing points. This segmentation transforms the unstable single-point support into a stable multi-point support system.
Solution Approach 2:
The supporting rods are designed with adjustable heights, allowing dynamic adaptation to the mask plate's position and orientation. The rods can be independently adjusted to ensure uniform contact and force distribution across the mask plate, maintaining stability during the alignment process while accommodating variations in mask plate placement.
2Reliability
If the mask plate is held firmly to prevent movement, then positioning is secure, but color mixing occurs at edges due to excessive force or misalignment
Solution Approach 1:
Instead of applying uniform force across the entire mask plate through a single bearing, the supporting rods apply localized forces at specific contact points around the mask plate's perimeter. This local quality approach ensures that each contact point provides just enough support without exerting excessive force that would cause edge color mixing, while collectively providing reliable fixation.
Solution Approach 2:
The system uses more supporting rods than the minimum required for stability (typically three rods for a planar object). This partial redundancy ensures that even if one rod applies slightly excessive force, the other rods compensate by distributing the load, preventing the harmful effects of over-constraint while maintaining reliable fixation.
3Manufacturing precision
If the mask plate position is fixed relative to the carrying platform, then alignment is maintained, but adjustment and repositioning become difficult
Solution Approach 1:
The supporting rods incorporate adjustable mechanisms that allow the mask plate to be dynamically repositioned and realigned. During the alignment process, the rods can be independently adjusted in height and position, enabling operators to easily correct misalignment without requiring complete removal and reinstallation of the mask plate. Once aligned, the system maintains the fixed position for precision work.
Solution Approach 2:
The supporting rods allow for parameter changes in the mask plate's position, orientation, and height during the alignment process. By adjusting the rod lengths and contact points, operators can modify the mask plate's parameters to achieve precise alignment. After alignment, these parameters are locked to maintain precision during subsequent operations.
Data Source
AI summary
The present disclosure discloses a carrying platform for carrying a mask plate. The carrying platform includes a body and a first securing structure disposed on the body. The first securing structure is to engage with a second securing structure of the mask plate. The first securing structure includes supporting rods disposed on the body, and the supporting rods are to be in contact with an edge region of the mask plate. An engagement between the first securing structure and the second securing structure enables the mask plate to be switched between a first state and a second state in such a manner that in the first state, the mask plate is in contact with a first supporting rod of the supporting rods and rotates about an axis of the first supporting rod in the horizontal plane, and in the second state, the mask plate is in contact with at least two of the supporting rods and is fixed relative to the carrying platform.