Pitch Adjuster Insert Module for HBM Test Alignment
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Solution Overview
Problem
Conventional test handlers face difficulties in testing high bandwidth memory (HBM) devices with fine-pitch contact portions due to the complexity and precision required for alignment and connection.
Innovation Solution
An insert module for a test tray is designed with a pitch adjuster that includes first and second pins arranged at different pitches, allowing for electrical connection at a wider second pitch, and a holder to securely position the electronic device during testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional test handlers are used to test HBM devices with fine-pitch contact portions, then the testing can be performed, but the alignment precision requirement becomes excessively high and the complexity increases
Solution Approach 1:
The patent introduces an insert module as an intermediary component between the test handler and the HBM device. This insert module includes a pitch adjuster that acts as a mediator to bridge the gap between the coarse pitch of the test handler and the fine pitch of the HBM contact portions, thereby reducing alignment precision requirements and simplifying the overall system complexity
Solution Approach 2:
The pitch adjuster changes the pitch parameter from the coarse pitch of the test handler to the fine pitch required for HBM contact portions. By adjusting the pitch parameter through the insert module's structural design, the system accommodates different pitch requirements without increasing overall complexity
2Measurement precision
If fine-pitch contact for testing HBM is implemented, then testing accuracy is improved, but the difficulty of connection increases
Solution Approach 1:
The insert module serves as an intermediary that facilitates the connection between the test handler and HBM device. The pitch adjuster within the insert module provides a transition zone that makes the fine-pitch connection easier to achieve by reducing the sensitivity to misalignment
Solution Approach 2:
The insert module is pre-configured with the pitch adjuster and holder structure before the HBM device is installed. This preliminary preparation ensures that when the device is placed, the alignment is automatically adjusted to the correct fine pitch, simplifying the connection process
3Productivity
If conventional testing methods are used for HBM, then the test process is simple, but the testing speed and efficiency are reduced
Solution Approach 1:
The insert module is designed as a universal component that can accommodate HBM devices with fine-pitch contact portions while integrating multiple functions: mechanical support through the holder, pitch adjustment through the pitch adjuster, and electrical connection. This multi-functionality improves testing efficiency without proportionally increasing complexity
Data Source
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AI summary
Disclosed is an insert module for test tray, including: a pitch adjuster configured to seat the electronic device thereon, and including a first side electrically connected to connection pins of the electronic device, and a second side provided with electrical contact means at a second pitch wider than a first pitch of the connection pins; and a holder configured to hold the seated electronic device. According to the disclosure, the insert module for test tray and the test tray including the same are capable of the accurate contact corresponding to the fine pitch of the electronic device, and maintain the precise contact during the test, thereby improving the accuracy of the test.