Flexible Display Window Cutting Line for Easier Repair
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Solution Overview
Problem
There is a need for an efficient method to repair flexible display devices, particularly the windows in these devices, which are prone to damage due to their flexible nature.
Innovation Solution
A display device with a protective layer, base substrate, adhesive layer, and light blocking pattern, featuring a cutting line in the base substrate that overlaps the light blocking pattern, allowing for easy separation and replacement of damaged components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a flexible display device uses a window structure with multiple layers (protective layer, base substrate, adhesive layer), then the window provides protection and structural integrity, but the complexity of the structure makes repair difficult
Solution Approach 1:
The window structure is divided into separable components (protective layer, base substrate, adhesive layer) with defined separation interfaces. The cutting line creates a deliberate separation zone that allows individual components to be removed and replaced independently, transforming the previously monolithic structure into modular segments that are easy to repair.
Solution Approach 2:
The adhesive layer is extracted as a separate, removable component between the protective layer and base substrate. This extraction enables the protective layer to be removed from the base substrate without damaging either component, facilitating easy repair and replacement of the protective layer while preserving the base substrate.
2Ease of repair
If a cutting line is added to the base substrate to facilitate separation, then repair ease is improved, but the manufacturing precision and structural integrity may be compromised
Solution Approach 1:
The cutting line is created during the manufacturing process as a pre-planned feature, not as a post-production modification. This preliminary action ensures that the separation interface is precisely positioned and structurally sound before the device is assembled, maintaining manufacturing precision while enabling easy repair.
Solution Approach 2:
The cutting line is positioned specifically at the boundary where the adhesive layer meets the base substrate, creating a localized separation zone. This local quality approach ensures that the cutting line provides separation functionality only where needed, while maintaining structural integrity in the rest of the base substrate.
3Shape
If the adhesive layer is made opaque or patterned to match the display, then aesthetic appearance is improved, but the ability to separate and repair components is reduced
Solution Approach 1:
The adhesive layer is segmented as a distinct, separable component with defined boundaries. Even when patterned or opaque, the adhesive layer maintains its identity as a separate layer that can be deliberately separated from the protective layer along the cutting line, allowing repair while preserving aesthetic appearance.
Solution Approach 2:
The adhesive layer serves as an intermediary between the protective layer and base substrate, providing both aesthetic functionality (through patterning or opacity) and mechanical functionality (through controlled adhesion). The cutting line acts as a mediator that enables separation without compromising the adhesive layer's aesthetic properties.
Data Source
AI summary
A display device including a window, an electronic device including the display device and a method for repairing the window of the display device are provided. The display device includes a window including a protective layer, a base substrate below the protective layer, an adhesive layer between the protective layer and the base substrate, and a light blocking pattern along an edge of the protective layer and between the protective layer and the adhesive layer, and includes a display module below the window, wherein a cutting line is defined in the base substrate and the cutting line overlaps the light blocking pattern.