DUT Container Shape Correction for Thermal Deformation
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Solution Overview
Problem
Existing electronic component handling apparatuses face challenges in accurately determining the accommodation state of DUTs within containers, particularly when exposed to high temperatures, leading to potential damage and reduced operational efficiency due to deformation and misalignment of DUT containers.
Innovation Solution
An electronic component handling apparatus that acquires three-dimensional shape data of DUT containers, corrects for deviations using reference points, and determines the accommodation state by extracting height and slope information, thereby improving accuracy and reducing DUT damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the DUT container is used in a high-temperature chamber, then the testing capability is improved, but the container deforms due to heat causing deviation between measurement area and actual DUT position
Solution Approach 1:
The patent creates a three-dimensional shape data copy of the DUT container using a sensor before high-temperature testing. This digital replica is then corrected for thermal deformation using reference points, allowing the system to compensate for position deviations without physically measuring the deformed container during testing. The copying approach enables accurate position determination despite thermal effects.
Solution Approach 2:
The patent changes the parameter representation by creating corrected three-dimensional shape data that accounts for thermal deformation. By calculating correction amounts based on reference points and applying them to the shape data, the system transforms the raw measurement data into corrected data that reflects actual DUT positions even when the container deforms at high temperatures.
2Productivity
If the pick-and-place device operates without shape data correction, then the operation speed is maintained, but the device stops or damages DUT due to incorrect position determination
Solution Approach 1:
The patent performs preliminary correction of the three-dimensional shape data before the pick-and-place operation begins. By calculating correction amounts based on reference points and applying them in advance, the system ensures accurate position information is available for all subsequent operations, preventing stops and damage while maintaining operational speed.
Solution Approach 2:
The patent uses reference points on the DUT container to provide feedback information about container position and orientation. This feedback is used to calculate correction amounts that are applied to the three-dimensional shape data, creating a closed-loop system that ensures accurate position determination for reliable DUT handling.
Data Source
AI summary
An electronic component handling apparatus handles a DUT and includes: an acquiring device that acquires current three-dimensional shape data of a DUT container having a plurality of accommodating portions each capable of accommodating the DUT; and a computer device that: calculates a first correction amount from the current three-dimensional shape data and corrects the current three-dimensional shape data based on the first correction amount; extracts, from the corrected three-dimensional shape data, at least one of a height and a slope of each of predetermined regions of the DUT container; and determines an accommodation state of the DUT based on an extraction result. The first correction amount represents at least one of a movement amount and a rotation amount in a planar direction of the current three-dimensional shape data with respect to an initial state of the DUT container set in advance.