Display Panel Lamination Alignment With a Movable Bellows Sub-Chamber
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Solution Overview
Problem
Existing lamination devices face challenges in accurately aligning the center of the alignment unit with the center of various types of display panels, which can lead to damage of the bellows and compromise the vacuum state during the lamination process.
Innovation Solution
The lamination device incorporates a sub-chamber with a moving mechanism, including a sub-plate, cylinder, linear motion guide, and floating joint, allowing the bellows to move freely and minimizing horizontal force, thus preventing damage and maintaining a vacuum state during alignment and adhesion of display panels to the window.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the alignment unit is moved to align the center with various types of display panels, then the alignment precision is improved, but the bellows may be damaged due to horizontal forces
Solution Approach 1:
The bellows is designed to be movable in the horizontal direction along with the alignment unit, transforming from a static component to a dynamic one. This allows the bellows to accommodate horizontal movements during alignment without experiencing damaging forces, while maintaining its vacuum sealing function.
Solution Approach 2:
A sub-chamber is introduced as an intermediary structure between the bellows and the alignment unit. The sub-chamber moves horizontally with the alignment unit while the bellows remains relatively stationary, acting as a mediator that decouples the horizontal movement from the bellows and prevents damage.
2Stability of the object's composition
If the bellows is made stationary to maintain vacuum state, then the vacuum stability is improved, but the alignment unit cannot move freely to align with different display panels
Solution Approach 1:
The chamber structure is segmented into a main chamber (containing the bellows) and a sub-chamber (containing the alignment unit). The sub-chamber is separated from the main chamber by a movable wall, allowing independent movement of the sub-chamber for alignment while the main chamber maintains its vacuum state through the stationary bellows.
Solution Approach 2:
The movable wall between the main chamber and sub-chamber acts as an intermediary that allows horizontal movement of the sub-chamber while maintaining the vacuum seal in the main chamber. This enables the alignment unit to move freely without compromising the vacuum state maintained by the stationary bellows.
3Manufacturing precision
If the alignment unit moves horizontally to center with display panels, then the alignment accuracy is improved, but horizontal force is applied to the bellows causing potential damage
Solution Approach 1:
The bellows is designed with horizontal movability, allowing it to move dynamically with the alignment unit during the alignment process. This dynamic design eliminates horizontal forces on the bellows by allowing it to follow the movement, while maintaining its primary function of maintaining vacuum pressure.
Solution Approach 2:
The sub-chamber serves as an intermediary that absorbs the horizontal movement. The sub-chamber moves horizontally with the alignment unit while being connected to the main chamber through a movable wall, preventing horizontal forces from being transmitted to the bellows in the main chamber.
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 enables precise alignment of the center of the alignment unit with the display panels, preventing bellows damage and ensuring a consistent vacuum state for effective lamination, enhancing the adhesion quality and reliability of the lamination process.
Implementation Method 1
The first electrostatic chuck may be disposed on the first base plate and fix the window. The at least one second electrostatic chuck may be disposed on the at least one second base plate and fix the at least one display panel.
Implementation Method 2
The at least one bellows may maintain the internal space to be in a vacuum state.
Data Source
AI summary
A lamination device includes an upper chamber accommodating a window, a lower chamber accommodating at least one display panel, at least one shaft penetrating the lower chamber, at least one alignment part aligning the at least one display panel and the window, and at least one sub-chamber disposed between the lower chamber and the at least one alignment part. At least one bellows surrounding a portion of the at least one shaft may be disposed in the at least one sub-chamber.