Conductive Contact Pin With Elastic Portion For Narrow Pitch Stability
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Solution Overview
Problem
Conventional electrically conductive contact pins face challenges in maintaining contact stability and precision due to manufacturing limitations, particularly with the pogo-type and rubber-type sockets, which result in signal loss and reliability issues as semiconductor technology advances, especially with narrower terminal pitches.
Innovation Solution
An electrically conductive contact pin design featuring a pin portion with a first and second contact portion and an elastic portion between them, integrated with a fixing and connecting portion, allowing for elastic deformation in both length and width directions, and featuring a boundary portion to separate contact and elastic regions, enhancing stability and adaptability to narrower pitches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the pogo-type socket pin uses a separate barrel and pin portion assembly, then manufacturing flexibility is improved, but the gap between outer surface of pin portion and inner surface of barrel increases, causing signal loss and distortion
Solution Approach 1:
The patent integrates the pin portion and barrel into a single integrated structure, eliminating the gap that causes signal loss while maintaining manufacturing flexibility through precision molding techniques
2Reliability
If the pin portion has a pointed tip portion to increase contact effect, then contact effectiveness is improved, but marks or grooves are generated on external terminal, causing vision test errors and lowering reliability
Solution Approach 1:
The patent applies different surface qualities to different regions of the contact pin, with a rounded tip for contact that prevents marking while maintaining effective electrical connection
3Ease of manufacture
If the rubber-type socket pin uses conventional manufacturing with magnetic field alignment, then production is simplified, but conductive particles are irregularly oriented when distance between magnetic fields is narrowed, limiting response to narrow pitch technology
Solution Approach 1:
The patent changes the manufacturing parameters by using a different alignment mechanism that does not rely on magnetic field distance, enabling consistent particle orientation even at narrow pitches
4Device complexity
If the pogo-type socket pin uses separate barrel and pin portion assembly, then manufacturing complexity is reduced, but it becomes difficult to manufacture the socket pin in small size, limiting response to narrow pitch technology
Solution Approach 1:
The integrated structure allows for compact design and miniaturization while maintaining functional performance, enabling adaptation to narrow pitch requirements
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 design improves contact stability and reliability by allowing for precise alignment and reduced signal loss, enabling effective transmission of electrical signals even with smaller terminal pitches, and can be easily integrated into existing inspection systems.
Implementation Method 1
an elastic portion between the first contact portion and the second contact portion
Implementation Method 2
The pin portion and the fixing portion may be relatively displaceable with respect to each other
Data Source
AI summary
Proposed is an electrically conductive contact pin, including a pin portion including a first contact portion, a second contact portion, and an elastic portion between the first contact portion and the second contact portion, a fixing portion provided outside the pin portion, and a connecting portion provided between the pin portion and the fixing portion to connect the pin portion and the fixing portion to each other.