Circuit Board Signal Layout Around Connector Positioning Pins
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Solution Overview
Problem
The positioning pin of a connector is prone to short-circuit with other signal traces in existing circuit board connections, leading to potential electrical failures.
Innovation Solution
The circuit board design includes specific arrangements of signal lines relative to positioning pins, ensuring they do not overlap or are kept at a distance to avoid short circuits, and in some cases, signal lines of the same attribute are positioned closer to the pins to facilitate contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If signal lines are arranged close to positioning pins to improve space utilization, then area efficiency is improved, but short circuit risk between positioning pins and signal lines increases
Solution Approach 1:
The patent applies different spatial arrangement strategies to different types of signal lines based on their electrical characteristics. First-type signal lines (carrying signals different from the positioning pin) are kept away from the positioning pin area, while second-type signal lines (carrying the same signal as the positioning pin) are allowed to overlap with the positioning pin area. This localized differentiation resolves the contradiction by optimizing space utilization for compatible signal lines while maintaining reliability for incompatible ones.
2Reliability
If positioning pin area is expanded to improve connection stability, then connection reliability is improved, but overlap with signal lines increases causing short circuit risk
Solution Approach 1:
The patent differentiates the treatment of signal lines based on their electrical compatibility with the positioning pin. The first area overlapping with the positioning pin is selectively applied: second-type signal lines (same signal attribute) are permitted to pass through this area to maintain connection stability, while first-type signal lines (different signal attribute) are routed outside this area to prevent short circuits. This selective local quality approach resolves the contradiction between connection stability and short circuit prevention.
Data Source
AI summary
Provided are a circuit board and an electronic device. The circuit board includes: a first surface and a second surface arranged opposite to each other, where a first connecting seat is arranged on the first surface and includes at least one first positioning pin; a first area, a projection of the first area onto the first surface along a direction perpendicular to a plane of the circuit board covers the first positioning pin; a first-type signal line, where a signal on the first-type signal line is different from a signal on the first positioning pin, and the first-type signal line does not overlap with the first area along the direction; and/or a second-type signal line, where a signal on the second-type signal line is the same as the signal on the first positioning pin, and the second-type signal line overlaps with the first area along the direction.