Detachable Display Layer Adhesion Control
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Solution Overview
Problem
Conventional display devices face challenges in easily exchanging damaged windows or touch screens, require complex and costly manufacturing processes, and lack versatility in design due to strong adhesive layers and high manufacturing costs.
Innovation Solution
A display device with a detachable layer having an adhesion strength of 0.1 to 500 gf/25 mm, allowing for easy replacement and recycling of windows or touch screens, and a manufacturing method that includes a manual attachment process with an adhesion reduction layer to prevent air bubbles and reduce manufacturing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a strong adhesive layer is used to attach the window or touch screen, then the attachment strength is improved, but the ease of replacement deteriorates
Solution Approach 1:
The adhesive layer is segmented into two distinct functional layers: a first adhesive layer providing strong attachment (1000-1500 gf/25mm) and a second adhesive layer enabling easy separation (0.1-10 gf/25mm). This segmentation allows each layer to independently fulfill its specific function without compromising the other.
Solution Approach 2:
Different regions of the adhesive structure have different properties: the first adhesive layer has high adhesion strength for secure attachment, while the second adhesive layer has low adhesion strength for easy separation. This local differentiation of adhesive properties resolves the contradiction between strong attachment and easy replacement.
2Strength
If a complex adhesive layer structure is used to ensure strong attachment, then the attachment strength is improved, but the manufacturing complexity increases
Solution Approach 1:
The adhesive layer is divided into two separate adhesive layers with distinct functions. The first adhesive layer ensures strong attachment, while the second adhesive layer facilitates easy separation. This segmentation simplifies the manufacturing process by allowing independent optimization and application of each layer without requiring complex single-layer structures.
3Manufacturing precision
If strong adhesive is used to prevent air bubbles during manufacturing, then the manufacturing precision is improved, but the ease of replacement deteriorates
Solution Approach 1:
The adhesive system is segmented into two layers: the first adhesive layer provides the strong bonding needed for precise manufacturing and secure attachment, while the second adhesive layer with its low adhesion strength enables easy separation and replacement. This segmentation resolves the contradiction by assigning different precision requirements to different layers.
Solution Approach 2:
The first adhesive layer is designed with high adhesion strength for precise manufacturing and secure attachment, while the second adhesive layer is designed with low adhesion strength for easy separation. This local differentiation of adhesive properties allows the system to achieve both manufacturing precision and ease of replacement simultaneously.
4Strength
If conventional adhesive layers are used, then the attachment strength is improved, but the recyclability deteriorates
Solution Approach 1:
The adhesive layer is segmented into a first adhesive layer for strong attachment and a second adhesive layer for easy separation. This segmentation enables the window or touch screen to be easily separated from the display device for recycling purposes, while still providing secure attachment during use, thereby improving recyclability without compromising attachment strength.
Solution Approach 2:
The second adhesive layer is specifically designed with low adhesion strength (0.1-10 gf/25mm) to facilitate easy separation and recycling, while the first adhesive layer provides the necessary strong attachment. This local quality differentiation enables the system to maintain strong attachment during use while allowing easy separation for recycling.
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
Enables simple and cost-effective exchange of damaged components, supports various designs, and reduces manufacturing costs by allowing consumers to perform manual operations without specialized equipment, while ensuring easy recyclability and improved attachment properties.
Implementation Method 1
a detachable layer having the adhesion strength in the range of 0.1 to 500 gf/25 mm
Implementation Method 2
an adhesion reduction layer formed on the touch screen or the touch screen cover layer
Data Source
AI summary
Provided is a display device having a detachable layer and a method for manufacturing the same that are capable of easily exchanging a damaged window or touch screen with new one, simply separating a window or touch screen therefrom, and providing a simple manufacturing process, a low manufacturing cost, and various designs. The display device includes: a window structure having a detachable layer formed on the entire surface of one side of a window, the detachable layer having the adhesion strength in the range of 0.1 to 500 gf/25 mm; and an attachment target device from which the detachable layer of the window structure is entirely detachable, wherein the attachment target device is any one selected from a touch screen, a touch screen cover layer, and a display.