Insulating Adhesive With Embedded Particles for ESD Protection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing insulation adhesive layers in electronic devices are prone to electro-static discharge (ESD) due to insufficient insulation performance, particularly in the direction of the bonding surface, leading to potential damage to internal components.
Innovation Solution
Incorporating highly electronegative and non-polar insulation particles into the insulation colloid, which have a higher breakdown field strength than the colloid, to create a longer breakdown path for ESD currents, thereby increasing the breakdown voltage and improving insulation performance in all directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the insulation adhesive layer is made sticky by doping with a sticky substance, then the adhesion performance is improved, but the insulation performance deteriorates
Solution Approach 1:
The patent uses a composite material system consisting of insulation colloid, insulation particles, and sticky substance. The insulation particles (with breakdown field strength greater than the colloid) are dispersed in the insulation colloid to form a composite adhesive layer that maintains both adhesion and insulation performance. This composite structure allows the sticky substance to provide adhesion while the insulation particles provide high breakdown resistance.
Solution Approach 2:
The patent applies local quality by creating regions with different properties within the adhesive layer. The insulation particles are distributed throughout the insulation colloid to create localized high-insulation regions that prevent ESD current propagation, while the sticky substance provides adhesion in specific areas. This local differentiation allows simultaneous optimization of both adhesion and insulation properties.
2Ease of manufacture
If the insulation adhesive layer uses conventional materials, then the manufacturing process is simple, but the insulation performance in the bonding surface direction cannot be effectively ensured
Solution Approach 1:
The patent changes the key parameter of breakdown field strength by selecting insulation particles with breakdown field strength greater than that of the insulation colloid. This parameter change ensures that when ESD current acts on the adhesive layer, it breaks down the colloid first and must bypass the high-breakdown particles, creating a longer breakdown path and higher breakdown voltage. The preparation method maintains simplicity by using conventional mixing and coating processes.
3Reliability
If the insulation adhesive layer is designed to block ESD current, then the electro-static protection capability is improved, but the adhesion performance may deteriorate
Solution Approach 1:
The patent employs a composite material formulation where insulation particles are dispersed in an insulation colloid with sticky substance added. The insulation particles provide ESD protection by creating a longer breakdown path, while the sticky substance ensures adequate adhesion performance. This composite approach allows both electro-static protection and adhesion requirements to be met simultaneously.
Solution Approach 2:
The patent creates local quality differentiation within the adhesive layer by distributing insulation particles throughout the colloid matrix. The sticky substance is present in sufficient quantity to ensure adhesion, while the insulation particles provide localized ESD protection. This spatial differentiation allows the layer to simultaneously provide both adhesion and electro-static protection without compromising either function.
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
The insulation adhesive layer with embedded insulation particles enhances electro-static protection by increasing breakdown voltage and ensuring consistent insulation performance regardless of the direction of the ESD current, thus preventing damage to internal components.
Implementation Method 1
Breakdown field strength of the insulation particle is greater than breakdown field strength of the insulation colloid
Implementation Method 2
When the housing components on two sides of the gap are insulators, there is a risk of electro-static discharge in the gap, generating an electro-static discharge (ESD, electro-static discharge) current
Implementation Method 3
the insulation particle is a highly electronegative non-polar insulation particle
Implementation Method 4
the insulation particle has a high electronegativity. Compared with a low electronegativity, a higher electronegativity gives the insulation particle a stronger capability to absorb electrons
Data Source
Figure 1a~1c
Figure 2~3
Figure 4(a)~4(b)
AI summary
This application discloses an insulation adhesive, an insulation tape, and an insulation adhesive preparation method. The insulation adhesive includes: an insulation colloid, and an insulation particle doped in the insulation colloid. Breakdown field strength of the insulation particle is greater than breakdown field strength of the insulation colloid. Since the breakdown field strength of the insulation particle is greater than the breakdown field strength of the insulation colloid, the insulation colloid is easier to break down than the insulation particle. When an electro-static discharge current acts on the insulation adhesive, the electro-static discharge current breaks down the insulation colloid that has worse insulation performance and that is easier to break down, and bypasses the insulation particle that has better insulation performance and that is more difficult to break down, so that a breakdown path of the electro-static discharge current becomes longer, and a breakdown voltage required to break down the insulation adhesive is increased, thereby improving the insulation performance of the insulation adhesive.