Curved Window Lamination Device with Single-Rotation Roller
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Solution Overview
Problem
Existing lamination technologies face challenges in precisely and uniformly attaching film members, such as touch screens or display panels, to curved surfaces of windows in mobile electronic devices, often resulting in bubble formation and damage during the attachment process.
Innovation Solution
A lamination device comprising a jig with a curved surface accommodation, a transfer member with a tension maintaining roller, a roller unit driven by a motor unit, and a pressing unit that rotates along a single rotational center to apply uniform pressure and attach the film member to the window, minimizing bubble formation and ensuring secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional lamination methods are used to attach film members to curved surfaces, then the attachment process can be completed, but bubble formation occurs and manufacturing precision deteriorates
Solution Approach 1:
The pressing unit is designed with a curved surface that matches the curvature radius of the window, allowing uniform contact and pressure distribution across the curved surface during lamination, thereby preventing bubble formation and improving attachment precision
Solution Approach 2:
The pressing unit adjusts its curvature radius to match different window curvature radii, enabling adaptive pressing that maintains optimal contact and pressure distribution for various curved surfaces, eliminating bubbles and ensuring precise attachment
2Manufacturing precision
If uniform pressure is applied to curved surfaces during lamination, then attachment quality improves, but device complexity increases due to the specialized pressing unit
Solution Approach 1:
The pressing unit applies pressure locally adapted to each region of the curved surface through its curved geometry, ensuring uniform contact and pressure distribution without requiring complex multi-component systems, thus achieving high attachment uniformity with moderate structural complexity
3Manufacturing precision
If the roller unit rotates along a single rotational center, then uniform pressure distribution is achieved, but the driving mechanism becomes more complex
Solution Approach 1:
The roller unit rotates along a single rotational center positioned at the curvature center of the window, creating a spherical rotation path that ensures the pressing surface maintains consistent contact and uniform pressure distribution across the curved window surface, achieving precise pressure control with a relatively simple rotational mechanism
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 precise and uniform attachment of film members to curved surfaces, reducing bubble formation and preventing damage to the display panels, thereby enhancing the manufacturing process for mobile electronic devices.
Implementation Method 1
a roller unit configured to press a surface of the transfer member to which the film member is not attached and attaching the film member to the window
Implementation Method 2
a pressing unit connected to the driving unit and the roller unit and configured to press the roller unit
Data Source
AI summary
A lamination device includes a jig configured to accommodate a window having a curved surface; a transfer member configured to allow a film member attached to the window to be spaced from the window; a roller unit configured to press a surface of the transfer member to which the film member is not attached and attaching the film member to the window; a driving unit connected to the roller unit and configured to move the roller unit along the curved surface of the window by rotating with respect to a single rotational center; and a pressing unit connected to the driving unit and the roller unit and configured to press the roller unit.