Foldable Display Window Layer Alignment for Minimal Bezel Bending
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Solution Overview
Problem
Existing display devices face challenges in improving visibility from various angles and minimizing the non-display region while maintaining a flexible design, often resulting in visible decorative elements and tolerance issues during bending.
Innovation Solution
A display device design incorporating a window protective layer that overlaps with a bending protective layer, with aligned cutting lines through a precise Laser Full-Shape Cut process, minimizing exposed areas and enhancing aesthetics by reducing visible decorative elements and improving lamination tolerance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the window protective layer is extended to overlap the bending protective layer, then aesthetics are improved by reducing visible decorative elements, but manufacturing complexity increases due to alignment requirements
Solution Approach 1:
The patent merges the cutting processes of the window protective layer and display panel by aligning their cutting lines. The window protective layer is designed to overlap the bending protective layer, and both are cut along the same cutting line that extends through the bendable region, integrating multiple cutting operations into a unified process that reduces manufacturing steps while maintaining aesthetic quality
Solution Approach 2:
The patent applies preliminary action by pre-aligning the cutting lines of the window protective layer and display panel before the actual cutting process. The cutting line is designed to extend from the first region through the bendable region to the second region, establishing a predetermined alignment path that guides the cutting process and ensures proper positioning of overlapping layers
2Manufacturing precision
If the cutting line extends through the bendable region with curvature, then tolerance between components is minimized, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies curvature to the cutting line as it extends through the bendable region. Instead of a straight cutting line, the line follows a curved path that accommodates the bent shape of the display panel, allowing the window protective layer and display panel to be aligned along the natural curvature of the bent region, thereby minimizing tolerance gaps while the laser cutting process maintains precision through controlled beam positioning
3Manufacturing precision
If the window protective layer and display panel are integrally cut, then tolerance is reduced, but process complexity increases
Solution Approach 1:
The patent combines the cutting operations of the window protective layer and display panel into a single integral cutting process. By aligning the cutting lines and using the same laser cutting path for both layers, the patent eliminates the need for separate cutting operations and subsequent alignment steps, reducing overall process complexity while achieving minimal tolerance between components
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 enhances the display device's aesthetics and reliability by minimizing visible decorative elements and reducing tolerance between components, resulting in a cleaner and more reliable design.
Implementation Method 1
a portion of the cutting line extending from the first region to the second region includes a curve
Data Source
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.