Detachable Wiring Sheet Layout for Low-Noise Electrical Probing
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Solution Overview
Problem
Existing electrical connection apparatuses face challenges in accurately measuring electrical characteristics of objects due to signal loss and noise, limiting the precision of inspections.
Innovation Solution
An electrical connection apparatus comprising a wiring board, a laminated wiring sheet with internal circuits, and a printed board, where the wiring sheet is configured in an attachable/detachable manner to facilitate various circuit configurations, including interposer, matching, loopback, and relay circuits, reducing signal propagation length and noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a relay element for switching circuits is arranged in an electrical connection apparatus, then various measurement characteristics can be achieved, but signal loss and noise increase
Solution Approach 1:
The patent extracts the relay element from the electrical connection apparatus, removing the source of signal loss and noise while preserving measurement versatility through fixed wiring configurations on the wiring board that provide different measurement pathways without requiring active switching components
Solution Approach 2:
The wiring board is designed with multiple wiring patterns that can accommodate various measurement configurations (through-terminal measurement, in-terminal measurement, loopback measurement) through its structural design rather than requiring relay elements, making the apparatus versatile without compromising signal quality
2Adaptability or versatility
If a relay element for switching circuits is arranged in an electrical connection apparatus, then various measurement configurations can be performed, but measurement precision deteriorates
Solution Approach 1:
The relay element is removed from the apparatus to eliminate the source of noise and signal degradation, thereby improving measurement precision while maintaining measurement versatility through the wiring board's multiple configured pathways
Solution Approach 2:
The wiring board serves as an intermediary structure that provides multiple pre-configured measurement pathways, replacing the need for relay elements while maintaining measurement flexibility and improving signal integrity for high-precision measurements
Data Source
AI summary
An electrical connection apparatus includes probes, a wiring board, a wiring sheet, and a printed board. The wiring board includes first electrodes each of which is connected to any one of the probes, and second electrodes each of which is electrically connected to any one of the first electrodes. The wiring sheet includes a first connection portion arranged on a first main surface, a second connection portion arranged on a second main surface facing the first main surface, and an internal circuit electrically connected to the first connection portion, and is laminated on the wiring board such that the first connection portion is connected to the second electrodes. The printed board faces the wiring board with the wiring sheet therebetween, and includes wiring patterns connected to the second connection portion. The wiring sheet is configured in an attachable/detachable manner between the wiring board and the printed board.