Laminating Device with Movable Base Tables for Curved Panels
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Solution Overview
Problem
Existing laminating methods for curved cover plates with large bending curvature, such as OLED displays, face challenges in ensuring uniform lamination and preventing air bubbles, particularly when dealing with flexible panels and large curvature cover plates, as current techniques like vacuum pumping, rollers, and airbags are not effective and can lead to undesirable issues like air bubbles and gaps.
Innovation Solution
A laminating device with a movable mechanism comprising a first and second movable base table, an elastic supporting member, and a driving mechanism that allows for precise movement and pressure application to both the central and edge bending areas of the curved cover plate, ensuring uniform lamination and reducing the risk of air bubbles by using an elastic supporting member and a clamping adjustment mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional vacuum pumping, rollers, or airbags are used for lamination, then the process is simple, but uniform lamination cannot be achieved on large curvature cover plates and air bubbles form
Solution Approach 1:
The lamination device divides the pressing surface into multiple independent pressing units that can be controlled separately. Each pressing unit includes a pressing plate and supporting structure that can apply pressure independently to different regions of the flexible panel, enabling precise control over lamination uniformity across the entire surface including curved edges.
Solution Approach 2:
The device employs movable pressing plates and adjustable supporting structures that can dynamically adapt to the curvature of the cover plate. The pressing units can move and adjust their position and pressure application points to match the geometric characteristics of both flat central areas and curved edge bending areas, achieving uniform lamination on complex surfaces.
2Manufacturing precision
If pressure is applied uniformly across the entire flexible panel, then the device structure is simple, but air bubbles remain trapped in edge bending areas
Solution Approach 1:
The lamination device applies different pressure levels to different regions of the flexible panel. Edge bending areas receive higher pressure through specifically positioned pressing units to force out air bubbles, while the central flat area receives appropriate pressure for uniform adhesion. This localized pressure control ensures complete air bubble elimination without requiring excessive overall pressure.
Solution Approach 2:
The device can independently adjust pressure parameters, position parameters, and timing parameters for each pressing unit. This allows optimization of pressure application to match the specific geometric and material characteristics of different regions, ensuring effective air bubble removal while preventing damage to the flexible panel or cover plate.
3Manufacturing precision
If the flexible panel is stretched tightly before lamination, then lamination quality improves, but the panel may deform or the adhesive layer may break
Solution Approach 1:
The device performs preliminary positioning and gentle pre-pressing of the flexible panel before applying full lamination pressure. This preliminary action aligns the panel correctly and removes large air pockets without subjecting the adhesive layer to excessive stress, preventing deformation and layer separation while preparing the surface for complete lamination.
Solution Approach 2:
The lamination process uses periodic pressure application with multiple stages: initial gentle contact, gradual pressure increase, holding phase for adhesion, and final pressure application for air bubble removal. This periodic pressure control allows the adhesive layer to bond progressively without sudden stress that could cause deformation or layer separation.
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 ensures tight and uniform lamination between the flexible panel and the curved cover plate, improving product yield and reducing lamination defects by providing controlled pressure and adjustable clamping forces, making it suitable for both small and large curvature cover plates.
Implementation Method 1
an elastic supporting member, having an elastic supporting portion, wherein the elastic supporting portion covers on parts of the first movable base table and the second movable base table that are close to the curved cover plate
Data Source
AI summary
A laminating device and a laminating method are disclosed. The laminating device is used for laminating a flexible panel together with a curved cover plate. The curved cover plate is provided with a central area and an edge bending area located in a first direction in the central area. The laminating device comprises a movable mechanism, which is arranged opposite the curved cover plate in a second direction and comprises: a first movable base table and a second movable base table, which are arranged opposite each other in the first direction; and an elastic supporting member, which is provided with an elastic supporting portion, the elastic supporting portion covering parts of the first movable base table station and the second movable base table station that are close to the curved cover plate, and being used for fixing the flexible panel.