Display Module Disassembly Using Cooled Auxiliary Sheet
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Solution Overview
Problem
The existing methods for disassembling display modules with minimal bezels are challenging due to the similar planar sizes of the window and display panel, making it difficult to separate defective components without damaging the adhesive layer.
Innovation Solution
A disassembling method involving an auxiliary sheet attached using adhesive tape, which is cooled to a low temperature to reduce the adhesive layer's bonding force while maintaining the adhesive tape's strength, allowing for the separation of the display panel and window by applying external force to the auxiliary sheet's exposed portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the display panel and window are attached with a strong adhesive layer, then the bonding strength is improved, but the difficulty of separation increases
Solution Approach 1:
The patent applies parameter changes by cooling the adhesive layer to low temperature (−80°C to −120°C) to alter its bonding characteristics. At this reduced temperature, the adhesive layer's bonding force decreases, enabling easy separation of the display panel and window while maintaining strong bonding at normal operating temperatures
Solution Approach 2:
The patent employs preliminary action by pre-cooling the adhesive layer before separation is needed. The cooling process is performed in advance to reduce the adhesive's bonding strength, making the subsequent separation operation easy and damage-free
2Shape
If the planar size of the window and display panel are made similar for minimal bezel design, then the aesthetic appearance is improved, but the ease of separation deteriorates
Solution Approach 1:
The patent introduces an auxiliary sheet as an intermediary tool to facilitate separation. This sheet is attached to one component (window or display panel) and provides an external force application portion that enables controlled separation without damaging the components, even when their planar sizes are similar
Solution Approach 2:
The patent replaces direct mechanical separation (which would be difficult and damaging) with a thermal field approach. By using temperature reduction to modify adhesive properties, the separation process becomes gentle and controllable, substituting mechanical force with thermal intervention
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 easy separation of the display panel and window, allowing for efficient replacement and remanufacturing by maintaining the adhesive layer on one component and facilitating the attachment of new components with a new adhesive layer.
Implementation Method 1
cooling the display module having the auxiliary sheet attached thereto
Implementation Method 2
the adhesive layer's bonding force while maintaining the adhesive tape's strength
Data Source
AI summary
A disassembling method of a display module includes attaching an auxiliary sheet to a display module by using an adhesive tape, the display module including a display panel attached to a window by an adhesive layer, and the auxiliary sheet attached to the display module including an external force applying portion exposed outside an outer edge of the display module; cooling the display module and the auxiliary sheet attached thereto by the adhesive tape; and after the cooling of the display module and the auxiliary sheet attached thereto, separating the display panel and the window from each other by applying force to the external force applying portion of the auxiliary sheet attached to the display module.