Contactor Cable Through-Hole Wiring Board Signal Transmission
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Solution Overview
Problem
Conventional methods for transmitting electrical signals to semiconductor packages via wiring boards often result in impedance mismatch and increased transmission loss due to the use of cables and connectors, which can lead to inefficiencies in signal transmission.
Innovation Solution
A contactor system is introduced, featuring a differential signal transmission cable with a connector that inserts into a through hole in the wiring board, allowing direct electrical connection between the cable's signal lands and the semiconductor package without passing through the wiring pattern, thereby reducing transmission loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a connector and wiring pattern are used to transmit electrical signals on the wiring board, then the electrical connection is established, but impedance mismatch occurs and transmission loss increases
Solution Approach 1:
The patent extracts the signal transmission path from the wiring board's wiring pattern by introducing a cable that passes through a through-hole directly connecting the front and back surfaces of the wiring board. This removes the signal from the problematic wiring pattern environment, eliminating impedance mismatch and reducing transmission loss while maintaining reliable electrical connection.
2Loss of energy
If a connector is placed on the front end of the cable and inserted into the wiring board, then direct electrical connection is achieved, but the complexity of the device increases
Solution Approach 1:
The patent merges the cable with the wiring board structure by having the cable pass directly through the through-hole and make contact with semiconductor packages on both surfaces. This integration reduces the need for separate connectors and wiring patterns, simplifying the overall device structure while maintaining low transmission loss.
Data Source
AI summary
A contactor coupled to an electrode of a semiconductor package mounted on a mounting surface of a wiring board, the contactor includes: a cable including a core line; a connector attached to a front end of the cable, and to be inserted into a through hole that penetrates the wiring board in a thickness direction thereof; and a signal land formed on a front end surface of the connector, and electrically coupled with the core line.