Laminated Cover Window Structure to Prevent Delamination
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Solution Overview
Problem
Current cover window manufacturing methods using injection molding are prone to delamination and deformation, compromising the reliability of the cover window.
Innovation Solution
A cover window comprising a film layer, a resin layer, and an adhesive layer, manufactured using an apparatus with moving units and a driving unit to laminate the layers at room temperature, ensuring rigid attachment and minimizing defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If injection molding is used to manufacture the cover window, then the manufacturing process is simple, but the cover window is prone to delamination and deformation
Solution Approach 1:
The cover window is divided into multiple separate layers (film layer, resin layer, protection layer) that are manufactured independently and then laminated together using adhesive layers, avoiding the delamination and deformation issues associated with injection molding while maintaining manufacturing simplicity
Solution Approach 2:
The invention uses a composite structure consisting of a film layer, resin layer, and protection layer bonded together with adhesive layers, combining the advantages of different materials to achieve both ease of manufacture and high reliability without the defects of injection molding
2Ease of manufacture
If a single-layer structure is used, then the manufacturing process is simple, but the cover window lacks rigidity and is prone to deformation
Solution Approach 1:
The cover window is segmented into multiple functional layers (film layer, resin layer, protection layer) with adhesive layers between them, providing rigidity and structural integrity while maintaining manufacturing simplicity through the lamination process
Solution Approach 2:
The multi-layer composite structure combines different materials with complementary properties, where the film layer provides flexibility, the resin layer provides rigidity, and the protection layer provides durability, achieving both strength and ease of manufacture
3Productivity
If high temperature processing is used, then the manufacturing speed is fast, but the bent portions of the cover window may deform
Solution Approach 1:
The bent portions are formed in advance during the lamination process at room temperature, before any high-temperature processing occurs, ensuring that the bent shape is established early and protected from deformation during subsequent manufacturing steps
Solution Approach 2:
The invention changes the temperature parameter from high temperature to room temperature during the lamination process, preventing thermal deformation of the bent portions while maintaining efficient manufacturing through the cold lamination approach
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 method enables easy and reliable manufacturing of a rigid cover window with reduced defects and deformation, allowing for flexible and durable applications in electronic devices.
Implementation Method 1
an adhesive layer interposed between the film layer and the resin layer and to attach the film layer and the resin layer to each other
Implementation Method 2
laminating the first member and the second member by linearly moving at least one of the first moving unit and the second moving unit
Data Source
AI summary
A cover window and an apparatus and method for manufacturing the cover window. The cover window includes a film layer having at least one bent portion, a resin layer having at least one bent portion, and an adhesive layer disposed between the film layer and the resin layer and adhering the film layer and the resin layer.