Touch Panel Separation via Adhesive Softening
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Solution Overview
Problem
Current methods for separating touch panels from display modules in discarded electronic devices are inefficient and often result in damage to both components, leading to a low recovery rate.
Innovation Solution
A system and method utilizing a carrying unit with a vacuum-adsorbing table and a disassembling unit with a heating module to soften the adhesive between the touch panel and display module, allowing for controlled separation without damage, using electric motors and screw assemblies to position and move the heating wire.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If mechanical pulverization or manual disassembly is used to remove the touch panel from the display module, then the touch panel can be separated from the display module, but the touch panel or display module will be damaged and the recovery rate will be remarkably reduced
Solution Approach 1:
The patent changes the physical state of the adhesive from solid to softened state by controlling temperature parameters. The heating module raises the temperature of the adhesive to its softening point, transforming its mechanical properties from rigid and damaging to pliable and easy to separate, thereby enabling damage-free disassembly while improving disassembly efficiency
Solution Approach 2:
The patent replaces mechanical disassembly methods (pulverization or manual force) with a thermal field approach. Instead of using mechanical force that damages components, the system uses controlled heating to soften the adhesive, allowing separation without mechanical stress on the touch panel or display module, thus improving both efficiency and recovery rate
2Strength
If the touch panel is firmly adhered onto the display module through adhesive, then the bonding strength is sufficient, but the touch panel or display module will readily be damaged during removal
Solution Approach 1:
The patent applies parameter change by controlling the temperature of the adhesive. During assembly, the adhesive is in a solid state providing strong bonding. During disassembly, the heating module raises the temperature to the adhesive's softening point, changing its physical state and reducing its bonding strength, allowing separation without damage to the components
3Device complexity
If conventional disassembly methods are used, then the process is simple, but the disassembly process is inefficient and results in low recovery rate
Solution Approach 1:
The patent replaces inefficient mechanical disassembly with a controlled thermal process. The heating module with movable heating wire provides uniform and controllable heating, softening the adhesive efficiently. This thermal approach maintains operational simplicity while dramatically improving disassembly efficiency and recovery rate compared to mechanical methods
Solution Approach 2:
The patent introduces heat as an intermediary substance between the disassembly tool and the adhesive bond. The movable heating wire acts as an intermediary that transfers thermal energy to the adhesive, mediating the separation process by softening the bond without directly contacting or damaging the touch panel or display module 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
Enables the safe and efficient disassembly of touch display devices, improving the recovery rate of both touch panels and display modules by softening the adhesive with a heating wire, allowing for automatic separation at a controllable temperature.
Implementation Method 1
energizing the heating wire and adjusting a voltage of a low-voltage direct current power source, so as to enable a temperature of the heating wire to be higher than a softening temperature of the adhesive
Implementation Method 2
softening an adhesive between the touch panel and the display module by moving the heating wire from one side of the touch display device to the other side
Implementation Method 3
a vacuum-adsorbing table connected to the first screw assembly and configured to carry the touch display device
Data Source
AI summary
The present disclosure provides a method and a system for separating a touch panel from a display module of a touch display device. The system includes a carrying unit configured to secure a to-be-processed touch display device, and a disassembling unit configured to soften an adhesive between the touch panel and the display module so as to separate the touch panel from the display module, thereby to disassemble the touch display device secured on the carrying unit.