Automated Probe Card Transfer Unit With Locking Pin Gripper
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Solution Overview
Problem
The manual management and loading of probe cards in semiconductor device manufacturing processes are inefficient, lacking automation in the transfer and handling of probe cards and package management apparatuses.
Innovation Solution
The development of package transfer units with grippers, a holding bar, and locking pins, along with a moving and hoisting mechanism, enables automatic transfer and management of probe cards and card jigs, improving the efficiency of probe card handling and transfer between storage and test units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual management and loading of probe cards is performed, then operational flexibility is maintained, but efficiency is low and human error is high
Solution Approach 1:
The transfer unit autonomously performs the complete transfer operation without human intervention. The gripper automatically grasps the probe card package, the moving part transports it between storage and test units, and the hoisting part positions it vertically. The system serves itself by integrating all transfer functions into a single automated unit that executes the complete workflow independently.
Solution Approach 2:
The patent replaces the manual mechanical operation with an automated mechanical system. Instead of human hands performing the transfer, a robotically controlled transfer unit with motorized grippers, moving parts, and hoisting mechanisms performs the operation. This substitution of manual mechanical action with automated mechanical systems resolves the contradiction by maintaining mechanical reliability while eliminating human error and improving efficiency.
2Reliability
If manual loading is used, then device complexity is low, but manufacturing precision and reliability are compromised
Solution Approach 1:
The transfer unit is divided into distinct functional segments: the gripper for grasping, the moving part for horizontal transport, and the hoisting part for vertical positioning. Each segment performs a specific function independently, allowing for precise control and reliability in each operation while maintaining manageable system complexity through modular functional decomposition.
Solution Approach 2:
The transfer unit acts as an intermediary device between the storage unit and test unit. It mediates the transfer process by providing a controlled interface that ensures reliable handoff of the probe card package. The locking pin mechanism serves as an intermediary element that secures the package during transfer, enhancing reliability without requiring direct manual handling or complex integrated systems.
3Reliability
If automated transfer is implemented, then human error is reduced, but device complexity increases
Solution Approach 1:
The patent merges the grasping function, horizontal movement function, and vertical hoisting function into a single integrated transfer unit. By combining these functions in one device rather than using separate systems, the patent achieves precise handling and reliable automated transfer while controlling overall system complexity. The merging of functions allows coordinated operation that improves handling precision without proportionally increasing complexity.
Solution Approach 2:
The locking pin serves as a simple intermediary mechanism that ensures secure coupling between the gripper and the probe card package during transfer. This simple intermediary element provides reliable locking without requiring complex fastening systems, thereby maintaining handling precision while minimizing the added complexity from automation features.
Data Source
AI summary
Probe card transfer units and probe card management apparatuses including the same may be provided. The transfer unit includes a hand part including grippers holding a package and a moving part moving the hand part. Each of the grippers includes at least one locking pin protruding from a holding bar, which extends in a direction perpendicular to the holding bar, to securely hold the package.