Automated Socket Replacement Handler for Semiconductor Testing
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Solution Overview
Problem
Existing semiconductor manufacturing handlers lack automation in replacing sockets on which substrates are mounted, which hampers efficient testing and reliability evaluation, as these replacements are typically performed manually.
Innovation Solution
A handler system with a loading unit, a test unit featuring a printed circuit board with sockets and latches for automatic socket mounting and unloading, and an unloading unit, which includes shuttles and contact control modules for transporting substrates and sockets, enabling automatic socket replacement based on testing results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual socket replacement is used, then device complexity is reduced, but productivity decreases and reliability is compromised
Solution Approach 1:
The handler is divided into distinct functional modules: loading unit with substrate holder, test unit with socket array and latches, unloading unit with substrate holder, and socket replacement unit with suction cups. This segmentation allows automated socket replacement while maintaining manageable system complexity through modular design.
Solution Approach 2:
The system performs self-service through automated socket replacement. The socket replacement unit automatically detects socket positions, activates latches to secure sockets, and replaces sockets without manual intervention, enabling the handler to service itself during operation.
2Productivity
If automated socket replacement is implemented, then productivity increases, but device complexity increases
Solution Approach 1:
Multiple functions are merged into integrated units: the socket replacement unit combines suction cups for socket grasping, latches for socket securing, and control mechanisms into a single automated assembly. This merging reduces the number of separate components while achieving high-speed automated socket replacement.
Solution Approach 2:
The latches serve multiple functions: they secure sockets during testing, enable automated socket replacement by the replacement unit, and maintain structural integrity of the socket array. This multi-functionality reduces the need for additional specialized components.
3Reliability
If sockets are fixed securely to the printed circuit board, then reliability improves, but ease of operation deteriorates
Solution Approach 1:
The latches provide dynamic fixing: they securely hold sockets during testing operations, but can be easily activated or deactivated by the automated replacement unit. This dynamic characteristic allows sockets to be both reliably fixed and easily replaced through automation.
Solution Approach 2:
The latches act as intermediaries between the socket array and the automated replacement unit. They provide secure mechanical attachment during testing while allowing the replacement unit to engage and manipulate them for automated socket replacement, bridging the need for both secure fixing and ease of replacement.
4Loss of time
If manual socket handling is used, then device complexity is low, but loss of time increases
Solution Approach 1:
The latches are pre-positioned and ready to engage with sockets before replacement operations begin. The loading unit and unloading unit are pre-configured with substrate holders, and the socket replacement unit has suction cups ready to grasp sockets. This preliminary preparation eliminates setup time during socket replacement operations.
Solution Approach 2:
The automated socket replacement enables continuous operation: while one set of sockets is being tested, the replacement unit can simultaneously prepare or replace sockets in other positions. This continuity eliminates idle time between testing cycles and maintains constant productivity.
Data Source
AI summary
A handler includes a loading unit transporting substrates and sockets coupled to the substrates, a test unit including a printed circuit board, the sockets being mounted on the printed circuit board, and latches fixing the sockets to the printed circuit board, and an unloading unit unloading the substrates and the sockets from the test unit.