Conductive Shield Member for Signal Integrity in Miniaturized PCBs
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
As circuit boards shrink, the reduction in size of conductive vias and the distance between them leads to signal distortion during transmission.
Innovation Solution
A circuit board design featuring a conductive connector with a conductive shield member surrounding it, which is electrically connected to a power source or ground signal to reduce signal distortion and intercept electromagnetic waves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the size of the circuit board is decreased, then the miniaturization of the circuit board is achieved, but the signal distortion increases due to reduced via size and spacing
Solution Approach 1:
A conductive shield member is introduced as an intermediary element between the conductive via and the surrounding environment. This shield member, having a different electrical potential than the via, acts as a mediator to control electromagnetic field distribution and prevent signal distortion while maintaining miniaturization benefits
Solution Approach 2:
The electrical potential parameter of the shield member is changed relative to the conductive via. By applying a different electrical potential (such as ground potential) to the shield member, the electromagnetic field distribution around the via is modified, thereby preventing signal distortion in the miniaturized circuit board
2Quantity of substance
If the distance between neighboring conductive vias is reduced, then the circuit board density increases, but electromagnetic interference between vias increases causing signal distortion
Solution Approach 1:
The conductive shield member serves as an intermediary structure positioned between neighboring conductive vias. This intermediate element controls the electromagnetic field interaction between adjacent vias, reducing electromagnetic interference while allowing increased via density for circuit board miniaturization
Solution Approach 2:
The shield member provides localized electromagnetic field control around each conductive via. By creating a localized shielding effect with different electrical potential, the harmful electromagnetic interference is confined and managed in specific local regions, enabling higher via density without signal distortion
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 conductive shield member effectively prevents signal distortion and electromagnetic interference, ensuring reliable signal transmission across the board.
Implementation Method 1
a conductive shield member surrounding at least a portion of the conductive connector to reduce distortion of a signal applied to the conductive connector
Data Source
AI summary
A circuit board having a board body includes a via structure. The via structure includes a conductive connector passing through the board body and a conductive shield member surrounding at least a portion of the conductive connector. The shield member prevents distortion of a data signal applied to the conductive connector, and also intercepts electromagnetic waves generated by the conductive connector.