Flexible Display Panel Lamination via Fixing Tape
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Solution Overview
Problem
The manufacturing of curved display devices faces challenges such as air bubbles and wrinkles due to the thinning of display panels during lamination over concave shapes, which affects the quality and integrity of the display.
Innovation Solution
A method involving a frame with a convex curved portion, a flexible display panel with adhesive layers and release areas, and a fixing tape is used to attach the panel securely, ensuring precise alignment and minimizing defects by sequential lamination and removal of release areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display panel is thinned to maintain flexibility and curvature, then the panel can be bent to match the frame shape, but air bubbles and wrinkles occur during lamination over concave shapes
Solution Approach 1:
The patent applies preliminary action by pre-attaching a fixing tape to the flexible display panel before lamination. This fixing tape maintains the panel's position and prevents shifting during the lamination process over concave shapes, thereby preventing air bubbles and wrinkles while preserving panel flexibility
Solution Approach 2:
The patent segments the lamination process into multiple steps: first attaching the fixing tape to the panel, then performing the lamination process, and finally removing the fixing tape. This segmentation allows precise control of the thin flexible panel during different stages of manufacturing
2Shape
If the flexible display panel is attached to the curved frame, then the desired curved shape is achieved, but the panel location shifts during lamination
Solution Approach 1:
The fixing tape is attached to the flexible display panel in advance, before the lamination process begins. This preliminary action ensures the panel maintains its correct position and alignment on the curved frame throughout the lamination process, preventing location shifts while achieving the desired curved shape
Solution Approach 2:
The fixing tape acts as an intermediary element between the flexible display panel and the frame during lamination. It provides temporary support and positioning, enabling precise alignment to be maintained without direct permanent attachment during the critical lamination stage
3Strength
If adhesive layers are applied to the flexible display panel, then secure attachment to the frame is achieved, but defects like air bubbles and wrinkles are generated
Solution Approach 1:
The fixing tape is attached to the flexible display panel before the adhesive lamination process. This preliminary fixation prevents panel movement and ensures smooth contact between the adhesive layer and panel surface, thereby achieving strong attachment without generating air bubbles or wrinkles
Solution Approach 2:
The fixing tape provides beforehand cushioning by preventing sudden movements or shifts of the flexible panel during adhesive application and lamination. This preventive measure cushions against the formation of defects like air bubbles and wrinkles, ensuring high surface quality while maintaining attachment strength
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 method prevents defects like air bubbles and wrinkles, maintaining the panel's thinness and curvature without shifting, thus ensuring a high-quality, defect-free curved display device.
Implementation Method 1
forming a first adhesive layer on the frame; forming a second adhesive layer on the surface of the flexible display panel; The flexible display panel is attached to the frame by the first and second adhesive layers
Data Source
AI summary
A method of manufacturing a curved display device is disclosed. In one aspect, the method includes providing a frame, providing a flexible display panel and attaching a first area of the flexible display panel to the frame. The method also includes attaching a second area of the flexible display panel to the frame, wherein the providing of the flexible display panel comprises attaching a release paper to a surface of the flexible display panel, the release paper comprising first and second release areas respectively corresponding to the first and second areas of the flexible display panel. The method further includes removing the first release area from the flexible display panel before attaching the first area and removing the second release area from the flexible display panel before attaching the second area.