Multi-Level Inspection Module for Semiconductor Testing Density
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Solution Overview
Problem
Current semiconductor testing systems have limitations in increasing the mounting density of testers due to spatial constraints in clean rooms, which restricts the number of cells that can be efficiently arranged for high-throughput electrical inspections.
Innovation Solution
The testing system incorporates a design with multiple levels of inspection chambers radially arranged around an alignment area, allowing for increased tester density by positioning inspection modules adjacent to the aligner module, and utilizing a chiller unit to maintain a dry atmosphere and prevent dew condensation, thereby enhancing throughput and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple cells with testers are arranged in horizontal and height directions, then the number of testers increases, but the mounting density is limited by spatial constraints in clean rooms
Solution Approach 1:
The patent transitions from conventional two-dimensional arrangement of testers on a single level to a three-dimensional configuration with multiple levels stacked vertically. The inspection module includes a first inspection chamber at a higher level and a second inspection chamber at a lower level, both sharing a common aligner module. This vertical stacking enables significantly higher tester mounting density within the same clean room footprint by utilizing the height dimension that was previously underutilized.
2Quantity of substance
If inspection modules are positioned adjacent to the alignment area, then tester density increases, but spatial arrangement becomes more complex
Solution Approach 1:
The patent merges the aligner module functionality to serve multiple inspection chambers simultaneously. A single aligner module is shared between the first inspection chamber at the higher level and the second inspection chamber at the lower level, both positioned adjacent to the alignment area. This consolidation reduces the number of duplicate alignment systems needed and simplifies the overall spatial arrangement while maintaining high tester density.
3Productivity
If multiple levels of inspection chambers are used, then throughput increases, but the system becomes more complex
Solution Approach 1:
The patent implements multi-functionality by designing the aligner module to serve multiple inspection chambers at different levels. The same aligner module performs alignment operations for both the first inspection chamber (higher level) and the second inspection chamber (lower level), eliminating the need for separate alignment systems for each level. This universal design increases inspection throughput through parallel processing while controlling system complexity through component sharing.
Data Source
AI summary
A testing system includes: an inspection module including a plurality of levels of inspection chambers in each of which a tester part having a tester configured to perform an electrical inspection of an inspection object and a probe card is accommodated; an aligner module configured to align the inspection object with the tester part; an alignment area in which the aligner module is accommodated; and a loader part configured to load the inspection object into the alignment area and unload the inspection object out of the aligner module, wherein the inspection module is located adjacent to the alignment area.