Shearing Mechanism for Separating Adhesive-Bonded Display Panels
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Solution Overview
Problem
In ultrathin computing devices, the adhesive bonding of display panels and screens makes it difficult to access and replace individual components without damaging the display, as breaking the adhesive bond often results in costly replacement of the entire display due to the high tensile strength of the VHB tapes.
Innovation Solution
A shearing mechanism is introduced at the perimeter edge of one panel, extending along a path proximate to the bonding edge, allowing for the application of sufficient pulling force to break the adhesive bond without damaging the display, enabling separation of the panels without damaging the display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If adhesive bonding (VHB tape) is used to attach display panels and screens, then the bond strength and structural integrity are improved, but the ease of repair and component accessibility deteriorate
Solution Approach 1:
A separation mechanism is pre-installed within the display assembly during manufacturing, positioned to interact with the adhesive bond. This mechanism remains dormant during normal operation but can be activated during repair to cleanly break the adhesive bond without damaging components, enabling easy access to internal parts while maintaining strong bonding during use.
Solution Approach 2:
A separation tool or mechanism acts as an intermediary between the user and the adhesive bond. This intermediary component is designed to interface with the adhesive layer and apply controlled force to break the bond, protecting the display panels and screens from direct damage while still allowing the bond to be broken for repair purposes.
2Stability of the object's composition
If adhesive bonding (VHB tape) is used to attach display panels and screens, then the structural integrity is improved, but the risk of damage during bond breaking increases
Solution Approach 1:
A separation mechanism is pre-installed within the display assembly during manufacturing, positioned to interact with the adhesive bond. This mechanism remains dormant during normal operation but can be activated during repair to cleanly break the adhesive bond without damaging components, enabling easy access to internal parts while maintaining strong bonding during use.
Solution Approach 2:
The separation mechanism is designed to control the force application during bond breaking, cushioning or distributing the stress to prevent concentrated loads that could damage the display panels or screens. This pre-planned separation path protects vulnerable components from the harmful effects of bond breaking.
3Ease of repair
If screws are used to attach display components, then the ease of repair is improved, but the device thickness increases
Solution Approach 1:
The fastening function is extracted from the traditional screw mechanism and replaced with an adhesive bonding system. This removes the need for threaded holes and protruding fasteners, allowing for a thinner overall device structure while maintaining the ability to secure components firmly during normal operation.
Solution Approach 2:
A separation tool or mechanism acts as an intermediary between the user and the adhesive bond. This intermediary component is designed to interface with the adhesive layer and apply controlled force to break the bond, protecting the display panels and screens from direct damage while still allowing the bond to be broken for repair purposes.
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 method allows for the separation of display panels and screens without damaging them, making it possible to access and replace individual components without replacing the entire display, reducing repair costs and improving maintenance efficiency.
Implementation Method 1
disposing an adhesive on at least one of (1) the periphery location of the first surface and (2) an opposing periphery location of the second surface; affixing the first surface to the second surface via the adhesive to create the panel assembly
Implementation Method 2
A shearing mechanism is introduced at the perimeter edge of one panel, extending along a path proximate to the bonding edge, allowing for the application of sufficient pulling force to break the adhesive bond
Data Source
AI summary
An information handling system display having a first part that includes a display screen and rendering electronics fastened onto a second part to seal the rendering electronics within the display. The first part is bonded onto the second part via an adhesive that forms a bond between the two parts. A shearing mechanism is also disposed within the display with at least one externally exposed end. A pulling force is applied to the at least one externally exposed end in order to cut through the bond when there is a need to separate the two parts from each other.