Micro Protrusion Adhesive Layer for Detachable Display Control
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Solution Overview
Problem
Existing display devices with detachable windows or touch screens lack effective control over adhesive strength, alien substance prevention, fingerprint prevention, and easy bubble removal, especially when applied to curved surfaces.
Innovation Solution
Incorporating a micro protrusion-based attachment and detachment control layer with a thermosetting or ultraviolet curing resin, mixed with cross-linkers, and featuring a fluoro-based or silicon-based resin, which is burrowed into micro protrusions for transparent and adjustable adhesive properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a transparent adhesive layer is used to attach the window to the touch screen, then the attachment is strong and transparent, but the adhesive strength cannot be controlled for easy detachment and bubble removal is difficult
Solution Approach 1:
The adhesive layer is segmented into multiple regions with different adhesive strengths. A first adhesive layer with strong adhesive strength is provided between the window and touch screen for secure attachment, while a second adhesive layer with weak adhesive strength is provided between the touch screen and display for easy detachment. This segmentation allows the system to simultaneously achieve strong attachment where needed and easy detachment where required, while also facilitating bubble removal from the strong adhesive region.
Solution Approach 2:
Different regions of the adhesive system are given different local qualities - the first adhesive layer has high adhesive strength properties for the window attachment region, while the second adhesive layer has low adhesive strength properties for the display attachment region. This local differentiation of adhesive properties enables controlled detachment and easy bubble removal from the strong adhesive layer without compromising the overall attachment strength.
2Strength
If the adhesive layer is made thick to ensure strong attachment, then the attachment strength increases, but bubbles are difficult to remove and transparency is reduced
Solution Approach 1:
The thick adhesive system is segmented into two distinct layers with different thicknesses and functions. The first adhesive layer can be thicker to provide strong attachment strength, while the second adhesive layer is thinner to facilitate bubble removal and maintain transparency. This segmentation allows the overall system to achieve both strong attachment and ease of manufacturing.
Solution Approach 2:
The adhesive strength parameter is changed across different layers - the first adhesive layer uses materials or formulations with high adhesive strength parameters, while the second adhesive layer uses materials with low adhesive strength parameters. This parameter differentiation enables the thick adhesive system to provide strong attachment where needed while maintaining bubble removal capability and transparency through the weaker second layer.
3Ease of repair
If a detachable window structure is implemented, then the window can be replaced when damaged, but the adhesive strength control for attachment and detachment is insufficient
Solution Approach 1:
The adhesive system is segmented into a first adhesive layer for permanent window attachment and a second adhesive layer for detachable touch screen attachment. This segmentation enables the window to be securely attached and replaced when damaged, while the touch screen can be easily detached and reattached. The different adhesive strengths in each layer provide the necessary control for both replacement and reattachment operations.
Solution Approach 2:
The adhesive system provides dynamic characteristics - the first adhesive layer maintains strong attachment under normal conditions but allows controlled detachment for window replacement, while the second adhesive layer provides easy detachment for touch screen removal and reattachment. This dynamic adhesive behavior enables flexible repair and maintenance operations.
4Illumination intensity
If the adhesive layer is made transparent to maintain screen clarity, then the aesthetics are improved, but the adhesive strength control and bubble prevention are compromised
Solution Approach 1:
The transparent adhesive system is segmented into two layers, both designed to be transparent to maintain screen clarity. The first transparent adhesive layer provides strong attachment strength, while the second transparent adhesive layer enables easy detachment and bubble removal. This segmentation allows the system to simultaneously achieve transparency for aesthetics and functional adhesive strength control.
Solution Approach 2:
Different local qualities are applied within the transparent adhesive system - the first adhesive layer has high adhesive strength properties while remaining transparent, and the second adhesive layer has low adhesive strength properties while also being transparent. This local differentiation of adhesive properties within the transparent system enables both aesthetic transparency and functional adhesive control.
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
This solution enhances adhesive strength control, prevents alien substances and fingerprints, facilitates easy bubble removal, and ensures smooth attachment and detachment on curved surfaces, maintaining screen clarity and simplifying manufacturing processes.
Implementation Method 1
an ultraviolet curing resin or a thermosetting resin, and a cross linker
Implementation Method 2
an ultraviolet curing resin or a thermosetting resin
Implementation Method 3
The attachment and detachment layer is burrowed into the micro protrusions of the attachment and detachment control layer
Data Source
Figure 1
Figure 2(a)~2(d)
Figure 3(a)~3(c)
AI summary
Proposed are a display device including micro protrusions for attachment and detachment control, having supplemented functions, such as control of adhesive strength for attachment and detachment, the prevention of attachment of an alien substance, fingerprint prevention, the easy removal of bubbles, and a smooth application to a curved display when a window or touch screen is attached or detached, and a method of manufacturing the same. In the device and method, the display device including a window and a display and selectively including a touch screen includes an attachment and detachment layer positioned in any one of the window, the touch screen, and the display and having adhesive strength of 0.1 gf/25 mm to 500 gf/25 mm, and an attachment and detachment control layer positioned to face the attachment and detachment layer in any one of the window, the touch screen, and the display and having micro protrusions formed therein.