Conductive Plate Hole Segmentation for High-Frequency Signal Testing
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Solution Overview
Problem
Conventional electrical connecting apparatuses for integrated circuits have long effective lengths between electrode and conductive portions, leading to high resistance values, making accurate high-frequency signal testing difficult due to complex contact structures and unreliable contact connections.
Innovation Solution
An electrical connecting apparatus with a conductive plate featuring hole areas of varying lengths to differentiate contact types, allowing only specific contacts to abut the plate during overdriving, reducing apparent resistance and enabling accurate high-frequency signal testing with a simple structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional contact structure is used, then the device complexity is reduced, but the resistance value increases and measurement precision deteriorates
Solution Approach 1:
The contact structure is segmented into multiple functional portions: a probe rear portion extending in the right-left direction, a deformation portion with an externally exposed surface, and a probe tip portion extending upward. This segmentation allows each portion to perform its specific function optimally while reducing overall resistance.
Solution Approach 2:
Different portions of the contact are given different local qualities: the probe rear portion is received in a slit for positioning, the deformation portion has an externally exposed surface for electrical connection to the conductive plate, and the probe tip portion penetrates the elastic plate. This local differentiation reduces the effective electrical path length.
2Reliability
If the electrical path length is reduced, then resistance value decreases, but contact reliability worsens due to simpler structure
Solution Approach 1:
The probe rear portion is preliminarily positioned within a slit formed in the electrical insulating plate before final contact establishment. This preliminary positioning ensures accurate alignment and reliable connection while maintaining a compact structure.
Solution Approach 2:
The deformation portion acts as an intermediary element with an externally exposed surface that facilitates reliable electrical connection between the contact and the conductive plate, bridging the gap between mechanical positioning and electrical connectivity.
3Adaptability or versatility
If all contacts are allowed to abut the conductive plate, then connection versatility increases, but resistance control deteriorates
Solution Approach 1:
The conductive plate has hole areas with different lengths in the right-left direction: a first hole area with a first length and a second hole area with a second length. This local differentiation allows selective abutment of probe tip portions based on their required electrical connection characteristics.
Solution Approach 2:
The hole areas in the conductive plate are segmented into different types (first hole area and second hole area) with different dimensions, allowing different probe tip portions to be selectively positioned in appropriate hole areas to achieve desired resistance values for different contact functions.
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 apparatus effectively reduces apparent resistance for grounding or powering, allowing for accurate high-frequency signal testing by ensuring only designated contacts connect with the conductive plate, thus shortening the electrical path and improving reliability.
Implementation Method 1
the contact elastically deforms the elastic plate and is thrust to the conductive portion of the wiring board
Data Source
AI summary
An embodiment of an electrical connecting apparatus comprises an electrical insulating plate, an elastic plate made of an electrical insulating material arranged on the electrical insulating plate, a sheet-like conductive plate arranged on the elastic plate, and first and second contacts. The conductive plate comprises a hole area having at least one first hole portion allowing the probe tip portion of the first contact to abut to the conductive plate and a plurality of second hole portions not allowing the probe tip portions of the second contacts to abut thereon regardless of whether or not overdriving acts on the contacts.