Display Device Limiting Adhesive Tape for Glue Overflow Control
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Solution Overview
Problem
The challenge in assembling display devices is the difficulty in controlling the volume of reinforcing glue, leading to excessive coating that affects the space for assembling other components, particularly when using air bonding or direct bonding techniques.
Innovation Solution
The use of a limiting adhesive tape is introduced, which is disposed at a preset position and covered by the adhesive body, allowing for precise coating of the adhesive within a moderate area, preventing overflow and ensuring adequate space for other components during assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If reinforcing glue is used to coat the edges of substrates to increase bonding firmness, then bonding strength is improved, but coating volume control becomes difficult causing excessive disposing range
Solution Approach 1:
A limiting adhesive tape is introduced as an intermediary component between the substrate and the reinforcing glue. The tape serves as a physical boundary that guides and restricts the flow of adhesive, ensuring it remains within designated areas. This mediator resolves the contradiction by enabling sufficient adhesive application for bonding strength while preventing excessive spread that would compromise manufacturing precision.
Solution Approach 2:
The limiting adhesive tape is disposed on the substrate before the reinforcing glue is applied. This preliminary action establishes predetermined boundaries that control where the adhesive will flow and settle. By preparing the substrate surface with these limiting structures in advance, the system ensures both adequate bonding coverage and precise spatial control of the adhesive.
2Strength
If reinforcing glue coating range is increased to ensure adequate bonding, then bonding firmness is improved, but space for assembling other components is reduced
Solution Approach 1:
The limiting adhesive tape acts as a spatial mediator that separates the adhesive application zone from other component assembly zones. By physically constraining the adhesive within specific boundaries, it ensures adequate bonding strength in required areas while preserving sufficient assembly space in other areas for double-sided adhesive and other components.
Solution Approach 2:
The limiting adhesive tape creates localized adhesive zones with high concentration where bonding is needed, while preventing adhesive intrusion into areas where assembly space is required. This local quality control ensures that bonding firmness is achieved at specific locations without compromising the overall assembly space availability.
3Quantity of substance
If reinforcing glue is coated to cover edge areas, then bonding coverage is improved, but interference with double-sided adhesive disposal occurs
Solution Approach 1:
The limiting adhesive tape serves as a protective intermediary that shields specific substrate areas from reinforcing glue infiltration. This allows the reinforcing glue to be applied in sufficient quantities for edge bonding while preventing it from interfering with the disposal and positioning of double-sided adhesive and other components during assembly.
Data Source
AI summary
A display device includes a first substrate, a second substrate, an adhesive body and a limiting adhesive tape. The second substrate is disposed to be opposite to the first substrate. The adhesive body is connected to the first substrate and the second substrate. The limiting adhesive tape is disposed on the first substrate and/or the second substrate, and the limiting adhesive tape is covered by the adhesive body.