Auto-Calibrating Semiconductor Tester Parameter Adjustment
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Solution Overview
Problem
Conventional semiconductor component testers require manual recalibration, leading to reduced testing efficiency and potential improper test results due to the lack of automatic calibration capabilities, especially when test parameters drift due to improper installation, part aging, or other causes.
Innovation Solution
A method for auto-calibrating semiconductor component testers involves detecting initial setting values, recording test records, and generating compensating values to adjust tester and board parameters, allowing for automatic recalibration and improved testing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual recalibration is performed by maintenance engineers, then test parameter accuracy is restored, but testing efficiency is significantly reduced due to procedure interruption
Solution Approach 1:
The tester performs self-calibration by automatically detecting initial setting values, comparing them with standard values, generating compensating values, and adjusting test parameters without requiring external maintenance engineers. This self-service mechanism resolves the contradiction by enabling accurate recalibration while maintaining continuous testing operations.
Solution Approach 2:
The system pre-stores standard setting values and calibration data in advance. When calibration is needed, the tester retrieves these pre-prepared standards and performs automatic comparison and adjustment, eliminating the need for manual setup and reducing calibration time while maintaining accuracy.
2Measurement precision
If test parameters are set by original factory/supplier, then initial testing accuracy is achieved, but parameter drift occurs due to improper installation, parts replacement, or aging
Solution Approach 1:
The system continuously monitors test parameters during operation, compares actual values with standard values stored in memory, and automatically generates compensating values to correct deviations. This feedback loop ensures parameter consistency over time despite installation issues, part replacements, or aging effects.
Solution Approach 2:
The test parameters are made dynamically adjustable through automatic calibration. The system can adaptively modify parameters in real-time based on detected deviations, transforming static factory-set parameters into dynamic, self-correcting values that maintain reliability under varying conditions.
3Ease of manufacture
If conventional calibration methods are used, then tester calibration is completed, but channel board test parameters cannot be calibrated leading to improper test results
Solution Approach 1:
The calibration system is designed to handle both tester parameters and channel board parameters through a unified automatic calibration process. The same calibration routine can calibrate different types of parameters across multiple components, ensuring comprehensive calibration coverage and preventing improper test results from uncalibrated channel boards.
Data Source
AI summary
A method for auto-calibrating a semiconductor component tester is provided. The semiconductor component tester includes a wafer tester or a package IC tester. Firstly, an initial tester setting value and an initial board setting value are acquired through a calibration board. Then, the test record of the semiconductor component corresponding to each test time and the tester parameter and the board parameter for testing the semiconductor component are recoded. If the semiconductor component fails the test, the semiconductor component is tested again according to the previously-passed tester parameter and the previously-passed board parameter, or the semiconductor component is tested again after the tester parameter and the board parameter are adjusted. The method is capable of correcting the improper test result from the improper tester parameter.