Shielded Socket Assembly for High-Density Pogo Pin Testing
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Solution Overview
Problem
Signal interference between adjacent pogo pins during chip testing causes precision and stability issues, especially during high-frequency signal tests.
Innovation Solution
A socket assembly with a body having through holes and grooves, and shield components made of conductive metallic material inserted into the grooves to shield signal interference between pogo pins.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the distance between through holes is reduced to increase pin density, then the productivity and compactness of the socket assembly is improved, but signal interference between adjacent pogo pins increases causing deterioration of measurement precision and testing stability
Solution Approach 1:
Shielding components are introduced as intermediary elements between adjacent pogo pins to block electromagnetic signal interference. These shield components are inserted into grooves positioned between the through holes, creating a physical barrier that prevents signal crosstalk while allowing the through holes to remain closely spaced for high pin density.
Solution Approach 2:
The socket assembly is segmented into distinct functional zones by introducing grooves and shield components between adjacent through hole arrays. This segmentation divides the continuous space into isolated compartments, confining electromagnetic signals within each through hole's vicinity and preventing interference with neighboring pins.
2Reliability
If shield components are added between through holes to reduce signal interference, then testing stability and precision are improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The shield components are implemented as thin wall structures formed by grooves in the socket body, rather than bulky three-dimensional shields. This thin-film approach provides effective electromagnetic shielding while minimizing the addition of volume and structural complexity to the overall assembly.
Solution Approach 2:
The shielding function is merged into the socket body structure itself by forming grooves directly in the insulating material, rather than adding separate shielding components. This integration reduces the number of discrete parts and simplifies manufacturing while maintaining the shielding effect.
3Measurement precision
If shield components are inserted into grooves to block signal interference, then electrical isolation between adjacent pins is improved, but manufacturing precision requirements increase
Solution Approach 1:
The grooves for receiving shield components are pre-formed in the socket body during the socket manufacturing process, before final assembly. This preliminary action ensures that the groove positions and dimensions are precisely controlled, and the shield components simply need to be inserted into these pre-prepared receptacles, reducing the overall assembly precision 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
Effectively shields signal interference, enhancing testing stability and precision by using insulating body and metallic shield components to reduce electrical contact and interference.
Implementation Method 1
The socket assembly includes an insulating body having a plurality of through holes and a plurality of grooves
Implementation Method 2
The plurality of shield components are insertedly disposed in the plurality of grooves... effectively shield signal interference
Data Source
AI summary
The present disclosure provides a socket assembly thereof. The socket assembly includes a body, a plurality of shield components and a plurality of retractable probes. The body has a plurality of through holes and a plurality of recesses. The through holes accommodate the retractable probes. At least one recess is formed between any adjacent two through holes. The shield components are inserted in the recesses.