Segmented Tape Structure for Residual Adhesive Removal
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Solution Overview
Problem
Conventional tapes used in electronic devices, such as display devices, often leave residual adhesive layers when reworked, leading to uneven surfaces and assembly issues during subsequent assembly processes.
Innovation Solution
A tape structure comprising a first adhesive layer, a supporting layer with multiple units, and a second adhesive layer, where the second adhesive layer is positioned between the first adhesive layer and the substrate, allowing for simultaneous removal of the first adhesive layer, supporting units, and second adhesive layer during rework, thereby minimizing residual adhesives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional tapes with multiple thin adhesive layers are used, then the tapes can secure components effectively, but residual adhesive layers remain when reworked causing uneven surfaces
Solution Approach 1:
The adhesive structure is segmented into a first adhesive layer and a second adhesive layer with a supporting layer between them. The supporting layer includes discrete supporting units that can be individually removed. This segmentation allows the adhesive layers to be removed completely without leaving residual adhesive, while still providing effective component securing when in place.
Solution Approach 2:
The supporting layer acts as an intermediary between the first and second adhesive layers. It provides structural support to the adhesive layers during application and removal, ensuring that both adhesive layers are removed together as a unit rather than leaving residual adhesive behind. The supporting units mediate the removal process to achieve complete cleanup.
2Ease of repair
If conventional tapes with thin adhesive layers are removed during rework, then some adhesive layers are removed, but residual adhesive layers are left behind
Solution Approach 1:
The first adhesive layer and second adhesive layer are merged through the supporting layer to function as a unified removable structure. When the supporting units are removed, both adhesive layers are pulled away together, ensuring complete removal without leaving residual adhesive. This merging ensures that removal operations achieve complete cleanup.
Solution Approach 2:
The supporting layer is pre-configured with supporting units that are designed to engage with both adhesive layers before removal occurs. This preliminary arrangement ensures that when removal is initiated, the supporting units automatically capture and remove both adhesive layers completely, preventing residual adhesive from being left behind.
3Ease of operation
If residual adhesive layers are left in the non-display area, then the surface becomes uneven, but detecting and measuring the residual adhesive is difficult
Solution Approach 1:
The supporting units are configured to provide visual indication when removed. The structure of the supporting units with their specific dimensions and arrangements creates visible patterns that make it easy to detect whether complete removal has occurred, eliminating the difficulty of detecting residual adhesive through color or structural changes.
Data Source
AI summary
A tape structure, a display panel and a display device utilizing the tape structure is provided. The tape structure includes a first adhesive layer, a supporting layer, and a second adhesive layer. The first adhesive layer extends along a first direction and has a first surface. The supporting layer is disposed on the first surface and includes a plurality of supporting units. A part of the second adhesive layer is attached to the first surface. The supporting layer is covered by the first adhesive layer and the second adhesive layer located at the side of the supporting layer opposite to the first surface.