Foldable Display Window Protection With Aligned Cut Lines
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices face challenges in improving visibility from various angles and minimizing the non-display region while maintaining a clean, reliable design, especially in flexible devices with bent regions.
Innovation Solution
A display device design that incorporates a window protective layer overlapping a bending protective layer with aligned cutting lines, using a precise Laser Full-Shape Cut process to minimize visible decorative elements and enhance lamination tolerance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a window protective layer is added to protect the window in bent regions, then reliability is improved, but device complexity increases due to additional layers and alignment requirements
Solution Approach 1:
The window protective layer is merged with the bending protective layer by making them overlap in the bent region. This combining approach allows a single layer to serve dual purposes: protecting the window from damage and protecting the bent region from stress, thereby improving reliability without proportionally increasing device complexity.
Solution Approach 2:
The window protective layer is designed to perform multiple functions: it protects the window from mechanical damage, provides structural support in the bent region, and when aligned with the bending protective layer, creates a unified protective system. This multi-functionality justifies the addition of the layer by delivering multiple benefits from a single structural element.
2Shape
If the window protective layer extends into the bent region to overlap with the bending protective layer, then aesthetics are improved by reducing exposed areas, but manufacturing precision requirements increase due to cutting line alignment
Solution Approach 1:
The window protective layer is designed with a predetermined extension into the bent region before final assembly. This preliminary configuration ensures that when the cutting line is formed, the extension portion is already positioned to overlap with the bending protective layer, achieving aesthetic continuity while simplifying the manufacturing process by pre-positioning critical alignment features.
Solution Approach 2:
The extension portion of the window protective layer acts as an intermediary element that bridges the window region and the bent region. By extending into the bent region and overlapping with the bending protective layer, it creates a seamless transition zone that improves aesthetics while the shared cutting line serves as a mediator to simplify manufacturing alignment.
3Productivity
If the cutting line of the window protective layer aligns with the cutting line of the display panel, then manufacturing efficiency is improved, but tolerance accumulation may increase across multiple components
Solution Approach 1:
The window protective layer and the display panel are merged through a shared cutting line that extends through both components. This merging allows them to be cut simultaneously in a single manufacturing step, dramatically improving productivity. The shared cutting line acts as a common reference that eliminates the need for separate cutting operations and reduces tolerance accumulation by establishing a unified dimensional baseline across both components.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A display device including: a display panel including a first region, a second region, and a bendable region between the first region and the second region; a bending protective layer disposed on the bendable region; a window disposed on the display panel and overlapping the first region; and a window protective layer disposed on the window and including an extension portion overlapping the bending protective layer, wherein the window protective layer and the display panel have the same cutting line in a portion of an overlapping region where the window protective layer overlaps the display panel.