Mask Assembly Manufacturing Device Inclined Support Stage
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Solution Overview
Problem
Existing mask assembly manufacturing devices face challenges in supporting mask frames effectively, leading to deformation and reduced yield due to friction forces during the manufacturing process of OLED displays, which requires a more stable and efficient support system.
Innovation Solution
A mask assembly manufacturing device with a support stage featuring inclined support parts, guide units with tilting parts and elastic components, and air lines to adjust the mask frame's position, reducing friction and deformation by cradling the mask frame and providing precise support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the mask frame is directly supported on a flat stage, then the structure is simple, but the mask frame deforms due to friction forces during the deposition process
Solution Approach 1:
The support stage is divided into multiple inclined support parts (first support part, second support part, etc.) that segment the contact points with the mask frame. This segmentation reduces the overall friction force distribution and prevents deformation while maintaining structural simplicity.
Solution Approach 2:
The support structure transitions from a flat horizontal stage to an inclined three-dimensional configuration. The mask frame is supported on inclined surfaces that allow it to be cradled at an angle, reducing friction contact area and preventing deformation during the deposition process.
2Measurement precision
If the mask frame is secured tightly to prevent movement, then positioning precision is improved, but friction forces increase causing deformation
Solution Approach 1:
The inclined support parts are designed to create a balanced support configuration where the mask frame rests naturally on the inclined surfaces. This equipotential-like balance allows the mask frame to be positioned precisely without requiring excessive clamping force, thereby reducing friction-induced deformation.
Solution Approach 2:
The inclined support parts act as intermediary elements between the stage and the mask frame. These intermediaries provide stable positioning while distributing contact forces, reducing the direct friction between the mask frame and the stage that would cause deformation.
3Reliability
If the support stage is inclined to reduce friction, then mask frame stability is improved, but the device complexity increases
Solution Approach 1:
The inclined support stage is segmented into multiple independent inclined support parts rather than requiring a completely complex reconfiguration of the entire stage. This segmentation achieves the stability benefit of inclination while keeping each individual support component relatively simple.
Solution Approach 2:
The inclined support parts serve multiple functions: they provide stable support, reduce friction forces, and enable precise positioning of the mask frame. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in overall device complexity.
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 solution enables stable support of mask frames, reduces friction forces, and improves the yield of the deposition process by allowing for precise adjustment and tensioning of mask frames, preventing deformation and ensuring accurate deposition of light emitting layers in OLED displays.
Implementation Method 1
a first elastic part connected to the first base part and the first tilting part
Implementation Method 2
providing an air flow to air lines defined in the stage to adjust a position of the mask frame
Data Source
AI summary
A mask assembly manufacturing device includes: a support part including a first support part and a second support part; a stage disposed on the second support part; support units configured to support the mask frame; and first guide units configured to overlap corner parts of the mask frame, where each of the first guide units includes: a first base part; a first cover part having a first opening defined therein; a first tilting part of which one portion is disposed inside the first cover part and another portion protrudes from the first cover part to an outside through the first opening; a first guide part connected to the first base part and the first tilting part; and a first elastic part connected to the first base part and the first tilting part.