Passivated Adhesive Carrier for Low-Force Device Release
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Solution Overview
Problem
Tacky carriers used for transporting semiconductor devices can cause damage during removal due to strong adhesion, and sensitive areas are at risk of adhesive contact, necessitating a solution that immobilizes devices without excessive adhesive force.
Innovation Solution
A carrier with a carrying surface featuring an adhesive layer and passivated elements comprising a tack deadening agent, where the passivated elements are distributed on the adhesive layer, forming passivated zones, boundary zones, and a surrounding zone, allowing devices to adhere only to the surrounding zone, reducing the force required for removal and avoiding sensitive area contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a tacky carrier is used to immobilize devices, then device stability and protection from chipping and friction are improved, but the force required for device removal increases to the point of causing damage or pickup failure
Solution Approach 1:
The adhesive layer is segmented into multiple zones with different adhesive properties: a first adhesive zone with higher tack for immobilization, and a second adhesive zone with lower tack for easier removal. This segmentation allows the carrier to provide both strong holding force and controlled release force, resolving the contradiction between device stability and removal ease.
Solution Approach 2:
Different regions of the adhesive layer are assigned different local qualities (adhesive strengths). The first adhesive zone has enhanced adhesive properties for secure device attachment, while the second adhesive zone has reduced adhesive properties for facilitated removal. This local differentiation enables the carrier to simultaneously achieve strong immobilization and easy, damage-free device pickup.
2Stability of the object's composition
If adhesive is applied broadly on the carrier surface, then device immobilization is improved, but the risk of adhesive contact with sensitive areas increases
Solution Approach 1:
The adhesive layer is divided into distinct zones: a first adhesive zone for device contact and immobilization, and a second adhesive zone with reduced adhesion. This segmentation creates controlled adhesive regions that can be positioned to avoid sensitive device areas while maintaining effective immobilization in appropriate zones.
Solution Approach 2:
The adhesive layer exhibits spatially varying adhesive properties, with the first zone having high tack for secure attachment and the second zone having low tack to prevent contact with or damage to sensitive areas. This local quality differentiation allows selective adhesive engagement based on device geometry and sensitive area locations.
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 carrier effectively immobilizes devices to prevent damage from chipping and friction while minimizing the risk of damage during pick-up and ensuring sensitive areas are not in contact with adhesives, by controlling adhesion through the distribution and size of passivated elements.
Implementation Method 1
an adhesive layer comprising an adhesive compound, being disposed on the carrying surface
Implementation Method 2
passivated elements comprising a tack deadening agent, being distributed on the adhesive layer, and being substantially tack free
Data Source
AI summary
A carrier for reversibly immobilizing a device is disclosed. The carrier comprises: a carrier body having a carrying surface; an adhesive layer comprising an adhesive compound, being disposed on the carrying surface, and having a tack; and passivated elements comprising a tack deadening agent, being distributed on the adhesive layer, and being substantially tack free. The adhesive layer comprises passivated zones on which the passivated elements are distributed, boundary zones encircling the passivated elements, and a surrounding zone bordering the boundary zones. Upper surfaces of the passivated elements extend above upper surfaces of the passivated zones, boundary zones, and surrounding zone. The carrier can reversibly immobilize a device placed horizontally in contact with at least one passivated element based on pressing the passivated element such that its upper surface is even with the upper surface of the surrounding zone and the device contacts and adheres to the surrounding zone.