Semiconductor Detachment via Pressurized Air Stream
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Solution Overview
Problem
In semiconductor manufacturing, the edge portions of wafers or semiconductor layers often remain unprocessed and uncut, forming a continuous ring that is difficult to detach from carriers like dicing tapes, requiring inefficient methods such as elastic carriers and manual handling.
Innovation Solution
A method involving a device with an air stream unit to guide a pressurized air stream onto the edge portions of the semiconductor layer, optionally combined with carrier deflection and UV irradiation, to facilitate detachment of the semiconductor material from the carrier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an elastic carrier is used to ease detachment, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The patent replaces the mechanical elastic carrier system with a pneumatic system. Instead of using an elastic carrier that requires mechanical expansion and manual handling, the invention uses a pneumatic device that directs compressed air streams onto the semiconductor wafer to achieve detachment. This substitution simplifies the overall system by eliminating the need for complex elastic carrier mechanisms while maintaining ease of operation.
Solution Approach 2:
The patent directly applies pneumatic principles by using compressed air streams to detach the semiconductor wafer from the carrier. The pneumatic device generates controlled air streams that apply force to the wafer surface, enabling easy detachment without requiring elastic carriers or complex mechanical structures. This approach simplifies the device while improving operational ease.
2Device complexity
If manual handling is used for detachment, then the device complexity is reduced, but the productivity decreases
Solution Approach 1:
The patent implements a self-service mechanism where the pneumatic device automatically detaches the semiconductor wafer from the carrier without requiring manual intervention. The compressed air stream acts autonomously to separate the wafer, eliminating the need for manual handling operations. This automation maintains system simplicity while significantly improving processing efficiency and productivity.
3Manufacturing precision
If the edge portion forms a continuous ring, then the manufacturing precision is maintained, but the ease of operation worsens
Solution Approach 1:
The patent uses pneumatic pressure applied through a compressed air stream to detach the continuous ring edge portion from the carrier. The air stream generates sufficient force to overcome the adhesion of the intact edge ring, enabling detachment while preserving the manufacturing precision and structural integrity of the semiconductor wafer. This approach maintains edge integrity while solving the detachment difficulty.
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
This method effectively eases the detachment of semiconductor layers from carriers, reducing manual effort and improving efficiency in processing, especially for uncut edge rings, by using a controlled air stream to lift off the edge portions, which can be enhanced with mechanical assistance.
Implementation Method 1
guiding an air stream onto the edge portion of the layer of semiconductor material
Implementation Method 2
pressurized air stream
Data Source
AI summary
Various embodiments provide a method of detaching semiconductor material from a carrier, wherein the method comprises providing a carrier having attached thereto a layer of semiconductor material, wherein the layer comprises an edge portion; and guiding an air stream onto the edge portion of the layer of semiconductor material.