Electrostatic Die Handling Assembly for Crack-Free Parallel Placement
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Solution Overview
Problem
Traditional die placement techniques in semiconductor manufacturing cause microcracks and fractures due to mechanical forces, leading to reduced product reliability and decreased production yield, and involve a time-consuming sequential process that impedes manufacturing efficiency.
Innovation Solution
An electrostatic handling assembly that uses an electrode arrangement to generate and control electrostatic forces for securely grasping and supporting multiple semiconductor components, allowing simultaneous placement and release without mechanical contact, using positive and negative electrodes to independently manage retention forces across discrete zones on a component-handling surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical forces are used to place and release dies, then the dies can be securely held and positioned, but microcracks and fractures occur leading to reduced product reliability
Solution Approach 1:
The patent replaces the mechanical contact-based die holding and release system with an electrostatic field-based system. Electrodes generate electrostatic forces to hold and release dies without physical contact, eliminating the mechanical forces that cause microcracks and fractures, thereby improving product reliability
Solution Approach 2:
The patent introduces an electrostatic field as an intermediary between the handling tool and the dies. This electrostatic field acts as a non-contact mediator to transfer the holding and releasing forces, avoiding direct mechanical contact that would otherwise damage the fragile semiconductor dies
2Manufacturing precision
If sequential placement of one die at a time is used, then precise positioning can be achieved, but the process becomes time-consuming and reduces manufacturing efficiency
Solution Approach 1:
The patent merges multiple die handling operations into a single simultaneous operation. Multiple electrodes can hold and release multiple dies at the same time, combining what was previously sequential operations into a parallel process, thereby increasing manufacturing efficiency without sacrificing positioning precision
Solution Approach 2:
The patent implements dynamic control of electrostatic forces across multiple independently controllable electrodes. This allows selective holding and releasing of different dies at different times or simultaneously, enabling flexible parallel processing that maintains precision while improving throughput
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 electrostatic handling assembly prevents structural damage to semiconductor components during placement, enhances production yield by reducing defects, and increases manufacturing efficiency through simultaneous handling and placement of multiple components.
Implementation Method 1
an electrode arrangement configured to generate a plurality of electrostatic forces, respectively, over a plurality of discrete and non-overlapping zones of the component-handling surface
Implementation Method 2
The electrostatic generation unit may be capable of providing a plurality of independent electrostatic retention forces
Data Source
AI summary
Various aspects may provide a handling assembly. The handling assembly may include a body with a component-handling surface. The component-handling surface may include a first component-handling region configured to accommodate a first semiconductor component arrangement and a second component-handling region configured to accommodate a second semiconductor component arrangement. The handling assembly may further include an electrode arrangement disposed at the body in a manner so as to be capable of independently toggling each of the first component-handling region and the second component-handling region between an active state and an inactive state. In the active state the electrode arrangement may provide an electrostatic retention force over the component-handling region, configured to retain a corresponding semiconductor component arrangement on the component-handling region.