Semiconductor Test Apparatus Integrating Burn-In and Operation Tests
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Solution Overview
Problem
Current semiconductor device testing processes require separate apparatuses for burn-in and operation tests, leading to increased time and costs due to the need to move devices between different test environments with varying temperature and voltage conditions.
Innovation Solution
A single semiconductor device testing apparatus and system that simultaneously or sequentially performs both burn-in and operation tests, utilizing a burn-in chamber with adjustable voltage and temperature, and a module unit with buffer units to improve signal integrity and power integrity through amplification and reference voltage-based signal processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate apparatuses are used for burn-in test and operation test, then each test can be performed with optimized temperature and voltage conditions, but the testing time increases due to moving devices between apparatuses
Solution Approach 1:
The patent combines the burn-in test apparatus and operation test apparatus into a single integrated testing system. The testing apparatus includes a test chamber that can perform both burn-in testing at high temperatures (125°C or more) and operation testing at lower temperatures, eliminating the need to physically move semiconductor devices between separate apparatuses. This integration maintains test accuracy while significantly reducing testing time.
Solution Approach 2:
The testing apparatus is designed with multi-functionality to perform both burn-in tests and operation tests using the same hardware platform. The system includes configurable temperature control and voltage control mechanisms that can be adjusted according to different test requirements, allowing a single apparatus to replace multiple specialized devices.
2Reliability
If separate apparatuses are used for burn-in test and operation test, then each test can be performed with optimized conditions, but the testing cost increases
Solution Approach 1:
The patent combines the burn-in test apparatus and operation test apparatus into a single integrated testing system. The testing apparatus includes a test chamber that can perform both burn-in testing at high temperatures (125°C or more) and operation testing at lower temperatures, eliminating the need to physically move semiconductor devices between separate apparatuses. This integration maintains test accuracy while significantly reducing testing time.
Solution Approach 2:
The testing apparatus is designed with multi-functionality to perform both burn-in tests and operation tests using the same hardware platform. The system includes configurable temperature control and voltage control mechanisms that can be adjusted according to different test requirements, allowing a single apparatus to replace multiple specialized devices.
3Productivity
If temperature is increased for burn-in test, then initial failures are detected more quickly, but the test environment differs from normal usage conditions
Solution Approach 1:
The testing apparatus employs dynamic temperature control that allows the system to switch between high-temperature burn-in test mode and lower-temperature operation test mode. The temperature control unit can adjust the chamber temperature based on the test phase, enabling accelerated failure detection during burn-in while providing conditions closer to normal usage during operation testing.
Solution Approach 2:
The testing process uses periodic action by conducting burn-in tests at elevated temperatures followed by operation tests at lower temperatures within the same apparatus. This periodic switching between test conditions allows the system to leverage both accelerated stress testing benefits and more realistic operational condition assessment.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Reduces testing time and costs by integrating both tests in a single apparatus, enhancing signal and power integrity through a multi-branch structure and buffer units, allowing for efficient detection of initial semiconductor device failures under severe stress conditions.
Implementation Method 1
a first buffer unit including an amplifier having an input terminal to which an input signal is inputted and an output terminal to amplify and output the input signal inputted based on a reference voltage (VT)
Data Source
AI summary
An apparatus for testing semiconductor devices and a system including the same includes a socket unit having a plurality of sockets into which a plurality of semiconductor devices are inserted, respectively. Also included is a module unit including a first sub-module for receiving a test signal from a host and providing the same test signal to each of the plurality of sockets, and a second sub-module including the same structure as the first sub-module. The first sub-module includes a first buffer unit including an amplifier having an input terminal to which an input signal is inputted and an output terminal to amplify and output the input signal inputted based on a reference voltage (VT), and a reference resistor having one end connected to the input terminal of the amplifier and the other end to which the reference voltage is applied, and a second buffer unit including the same structure as the first buffer unit.