Curved Display Window with Gradient Thickness to Prevent Peeling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display windows with curved sides often experience peeling of functional layers, which compromises their protective and fingerprint-repelling properties.
Innovation Solution
A display module design featuring a window with specific thickness gradients and functional layers, including a first functional layer made of acrylic or epoxy-based materials and a second layer with fluorine-based materials, applied in a manner that prevents peeling and enhances durability and hydrophobicity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the window has a curved side surface, then the window provides aesthetic appearance and ergonomic design, but the functional layers are easily peeled off
Solution Approach 1:
The patent applies different thickness specifications to different regions of the window. The first region (curved side surface area) has a thickness of 0.5mm to 1.5mm, while the second region (central area) has a thickness of 2mm to 5mm. This local differentiation allows the curved portions to have enhanced structural integrity and peeling resistance while maintaining the desired aesthetic shape, without unnecessarily increasing the thickness of the entire window.
Solution Approach 2:
The window is divided into multiple regions with different thickness characteristics. The curved side surface area is segmented as a distinct region with specific thickness requirements (0.5mm to 1.5mm), separate from the central region (2mm to 5mm). This segmentation allows independent optimization of each region's properties to address the peeling issue in curved areas while maintaining overall window performance.
2Reliability
If the window thickness is increased to prevent peeling, then the protective property is improved, but the manufacturing complexity and cost increase
Solution Approach 1:
Instead of uniformly increasing the window thickness throughout, the patent specifies different thickness ranges for different regions: 0.5mm to 1.5mm for curved side areas and 2mm to 5mm for the central area. This localized approach provides enhanced peeling resistance where needed (at curved surfaces) while avoiding the manufacturing complexity and cost associated with uniformly thick windows.
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 design effectively prevents peeling of functional layers and maintains the window's protective and fingerprint-resistant properties, ensuring a durable and user-friendly display surface.
Implementation Method 1
The first functional layer may be disposed on the second portion, the third portion and the fourth portion and may include a first material. The second functional layer may be disposed on the first functional layer and may include a second material different from the first material.
Data Source
AI summary
A display module includes a display panel and a window. The window includes a base substrate and a plurality of functional layers. A central portion of the base substrate is flat, and an edge portion of the base substrate has a rounded shape. An upper portion of the edge portion of the window has the rounded shape and thus protrudes from a lower portion of the edge portion toward the outside. A first functional layer of the plurality of functional layers includes an acrylic-based material and/or an epoxy-based material, and a second functional layer of the plurality of functional layers includes a fluorine-based material.