Single-Layer Fluorinated Hard Coating for Displays
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Solution Overview
Problem
The existing hard coating films for display devices are costly and complex to manufacture, with high costs and prolonged process times due to the need for multiple layer formations, and often suffer from reduced hardness and adhesion issues, especially when using wet methods, which can lead to separation of layers and compromised anti-reflective properties.
Innovation Solution
A display device with a hard coating layer formed from a photo curable resin composition that includes a fluorinated polymer and fluorinated silane, enabling a single-layer structure with enhanced anti-reflective, water-repellent, and fingerprint-resistant properties, thereby simplifying the manufacturing process and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple coating layers are formed using the dry method, then the anti-reflective property is improved, but the manufacturing complexity and cost increase significantly
Solution Approach 1:
The patent combines multiple coating layers into a single integrated hard coating layer formed by one coating process. This single layer integrates the anti-reflective function that previously required multiple separate layers, thereby reducing manufacturing complexity while maintaining the anti-reflective property.
Solution Approach 2:
The hard coating layer is designed to perform multiple functions simultaneously: it provides anti-reflective properties, hardness protection, and adhesion. This multi-functional design eliminates the need for separate specialized layers, simplifying the overall coating structure and manufacturing process.
2Reliability
If multiple coating layers are formed using the dry method, then the anti-reflective property is improved, but the process time is lengthened
Solution Approach 1:
Multiple coating operations are merged into a single coating process that forms an integrated hard coating layer. This eliminates the sequential time required to deposit multiple separate layers, significantly reducing the total process time while maintaining anti-reflective performance.
Solution Approach 2:
The coating process is designed as a continuous single-step operation rather than multiple discrete steps. This continuity eliminates idle time between layers and accelerates production, reducing the overall time required to achieve the desired anti-reflective property.
3Device complexity
If the wet method is used to form the hard coating layer and low refractive-index layer, then the manufacturing complexity is reduced, but the adhesion force between layers weakens
Solution Approach 1:
The hard coating layer and low refractive-index layer are merged into a single hard coating layer with integrated functionality. This eliminates the interface between separate layers that would be prone to adhesion failure, while maintaining the optical and mechanical properties through careful material composition design.
Solution Approach 2:
The hard coating layer uses a composite material composition that combines materials with different properties to achieve both low refractive index and high adhesion. This composite approach allows the single layer to perform multiple functions that previously required separate layers with strong inter-layer bonding.
4Reliability
If the surface of the hard coating film is patterned with ultra-fine protrusion patterns, then the anti-reflective property is improved, but the hardness of the coating film is reduced
Solution Approach 1:
The patent applies local quality by creating specific surface structures only in certain regions or at controlled depths within the coating layer. This allows anti-reflective functionality to be achieved through localized surface modification rather than overall patterning, preserving the bulk hardness of the coating film while providing the needed optical properties.
Solution Approach 2:
The invention changes the physical and chemical parameters of the coating material composition to achieve both anti-reflective properties and high hardness simultaneously. By adjusting material composition, molecular structure, and coating process parameters, the coating achieves the desired surface characteristics without sacrificing bulk mechanical properties.
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 provides a hard coating layer with improved hardness, anti-reflective, and fingerprint-resistant properties while eliminating the need for additional layers, thus reducing manufacturing complexity and costs, and enhancing the durability and performance of the display device.
Implementation Method 1
A display device with a hard coating layer formed from a photo curable resin composition that includes a fluorinated polymer and fluorinated silane
Data Source
AI summary
An LCD device is disclosed, which may include display panel and a hard coating layer on the display panel from a photo curable resin composition that includes a fluorinated polymer, wherein the fluorinated polymer is included into the photo curable resin composition by about 15 to about 35 wt %.