Fracture Holding Structure for Gravity-Separated Substrate Parts
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for separating substrates in the Smart Cut process face challenges in maintaining the distance between the separated parts, leading to potential damage or contamination due to friction and contact during handling.
Innovation Solution
A device with lugs arranged on columns that hold the assembly in a horizontal position, allowing separation by gravity without external manipulation, and includes a support for the lower part to be gripped by its rear face, minimizing contact and using an ultrasonic device to initiate the fracture wave for precise separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If assemblies are arranged vertically in the furnace, then the fracture plane is vertical and separation is achieved, but the two parts remain very close or pressed against each other causing friction and surface deterioration
Solution Approach 1:
The patent changes the symmetric vertical arrangement to an asymmetric horizontal arrangement where the assembly is positioned horizontally on the support, creating a configuration where the two parts separate in opposite directions (one falling, one remaining) rather than staying pressed together
Solution Approach 2:
Instead of the conventional vertical arrangement where gravity acts perpendicular to the fracture plane, the patent inverts the arrangement to horizontal positioning where gravity acts parallel to the fracture plane, causing one part to fall away from the other after separation
2Ease of operation
If assemblies are arranged horizontally, then handling is simplified, but sliding during fracture and gripping generates scratches on facing faces due to friction and contact
Solution Approach 1:
The patent introduces a support as an intermediary element that receives the assembly in a horizontal position and provides a controlled separation mechanism, mediating between the handling requirements and the surface protection needs by allowing gravity-driven separation without manual manipulation
Solution Approach 2:
The system uses gravity as a self-service force to automatically separate the two parts after fracture initiation, eliminating the need for external manipulation or gripping that would cause surface damage, with the lower part naturally falling away from the upper part
3Stability of the object's composition
If the assembly rests on a rigid support, then stability is maintained, but the smaller distance between substrates after separation increases the probability of contact and damage
Solution Approach 1:
The patent uses gravity as a counteracting force that actively promotes separation by causing the lower part to fall away from the upper part, counterbalancing any tendency for the parts to remain in contact or for the assembly to collapse onto itself
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
Ensures minimal intervention and reduces the risk of damage or contamination by maintaining the substrates at a distance, promoting surface homogeneity and controlled separation without direct contact between the parts.
Implementation Method 1
using an ultrasonic device to initiate the fracture wave for precise separation
Implementation Method 2
separation by gravity without external manipulation
Data Source
Figure 1~3A
Figure 3B~3C
AI summary
Holding device (100) for an assembly (1) that is to be fractured, designed to separate along a fracture plane defined between an upper part (7) and a lower part (8) of the assembly (1) that is to be fractured, the holding device (100) comprising at least two lugs (9) that are configured to hold the assembly (1) that is to be fractured in suspension in a substantially horizontal holding position, the lugs (9) being intended to be located between the upper part (7) and the lower part (8), against a peripheral chamfer (10) of the upper part; a support (15), located below and remote from the lugs (9), so as to receive the lower part (8) by gravity when the assembly (1) that is to be fractured is separated, and to hold the lower part at a distance from the upper part (7) which is held by the lugs (9).