Pressing Assembly for Secure Chip Electrical Connection
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Solution Overview
Problem
Conventional IC chip testing apparatuses often fail to ensure proper electrical connection of IC chips to probes, leading to incorrect testing results due to improper mounting, which is only detected after the testing is completed.
Innovation Solution
A pressing assembly with a base seat, pressing member, and elastic members is integrated into the chip testing apparatus, which presses the chips securely into their accommodating slots, ensuring proper electrical connection and easy return to the original position, and a temperature adjusting device is used to maintain a predetermined temperature for reliable testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chips are mounted onto the testing apparatus without a pressing mechanism, then the mounting process is simple and fast, but the electrical connection between chips and probes is unreliable
Solution Approach 1:
The pressing member utilizes the elastic returning force of the elastic member to automatically return to its initial position after pressing the chip, enabling the system to self-reset without external intervention. This simple mechanism ensures reliable electrical connection while maintaining structural simplicity
Solution Approach 2:
The pressing assembly is divided into independent functional components: a pressing member for applying force, an elastic member for providing returning force, and a contacting portion for electrical connection. This segmentation allows each component to perform its specific function efficiently while keeping the overall structure simple
2Reliability
If chips are pressed firmly to ensure electrical connection, then connection reliability improves, but the chip may become difficult to remove or damage the probing structure
Solution Approach 1:
The pressing member is designed to be movable rather than fixed, allowing it to dynamically adjust its position based on the chip's placement. The elastic member provides a controlled pressing force that is sufficient for electrical connection but automatically reduces when the chip is removed, preventing damage to both the chip and probe
Solution Approach 2:
The elastic member acts as a cushioning element that provides a controlled, non-excessive pressing force. This pre-designed elastic response ensures that the chip is pressed firmly enough for reliable connection but prevents over-pressing that could cause damage to the chip or probing structure
3Loss of time
If manual checking of chip mounting is performed after all testing is completed, then no additional checking mechanism is needed, but time is lost and defective chips cannot be identified early
Solution Approach 1:
The pressing member performs the pressing action immediately when the chip is placed in the accommodating slot, before the testing process begins. This preliminary pressing ensures proper electrical connection is established upfront, and any improper mounting can be detected and corrected before wasting testing time
Solution Approach 2:
The elastic member provides immediate feedback through its elastic deformation when the chip is properly pressed into place. This mechanical feedback indicates successful mounting, allowing operators to verify proper connection before proceeding with testing, thereby reducing time loss without requiring complex checking mechanisms
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
The solution ensures stable and secure electrical connection of chips during testing, preventing separation from probes and allowing for consistent testing under controlled temperature conditions, thereby improving the reliability of chip testing results.
Implementation Method 1
When the pressing member presses the surface of the chip, the at least one elastic member is elastically deformed, and when the pressing member no longer presses the surface of the chip, the at least one elastic member being pressed generates an elastic returning force which allows the pressing member to return to a state where the pressing member does not press the chip
Data Source
AI summary
A pressing assembly and a chip testing apparatus including a plurality of the pressing assemblies are provided. The pressing assembly is fixedly disposed in a lid that is configured to cover a side of a chip tray kit, and the chip tray kit is configured to carry a plurality of chips. When the lid covers the side of the chip tray kit, a pressing member of each of the pressing assemblies presses a surface of each of the chips, and each of a plurality of elastic members connected to the pressing member is in a pressed state. When the lid covers the side of the chip tray kit, the lid and the chip tray kit define an enclosed space, and an air suction device of the chip testing apparatus can suction away air in the enclosed space, so that the enclosed space is in a negative pressure state.