Connecting Blade Skew Reduction via Insulation Permittivity
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Solution Overview
Problem
Conventional connecting blades face challenges in reducing signal transmission time lag (skew) between straight and cross pairs, requiring complex die shapes and increasing manufacturing costs, with difficulty in adjusting shapes to eliminate skew without altering the entire die.
Innovation Solution
The connecting blade features straight pairs without wave-shaped sections and cross pairs with adjustment regions of lower permittivity on the insulation board, allowing for easy adjustment of signal transmission time lag without changing the punching die, maintaining simple shapes for the straight pairs and reducing manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the straight pair is provided with a wave-shaped section to reduce skew, then signal transmission time lag is reduced, but the die shape becomes complicated and manufacturing cost increases
Solution Approach 1:
The invention extracts the skew adjustment function from the straight pair's shape and relocates it to the insulation board's permittivity distribution. By providing adjustment regions with different permittivity values in the insulation board, the patent separates the line routing (straight pairs remain straight) from the electrical characteristic adjustment, thereby eliminating the need for complex wave-shaped sections in the straight pair.
Solution Approach 2:
The invention applies local quality by creating adjustment regions with specific permittivity values at particular locations in the insulation board. These localized regions with different electrical properties (lower permittivity) allow for precise control of signal transmission characteristics without affecting the overall straight shape of the differential lines, thus resolving the contradiction between maintaining simple geometry and achieving electrical performance.
2Manufacturing precision
If the straight pair is provided with a wave-shaped section to reduce skew, then signal transmission time lag is reduced, but manufacturing cost increases
Solution Approach 1:
The invention extracts the skew adjustment function from the straight pair's shape and relocates it to the insulation board's permittivity distribution. By providing adjustment regions with different permittivity values in the insulation board, the patent separates the line routing (straight pairs remain straight) from the electrical characteristic adjustment, thereby eliminating the need for complex wave-shaped sections in the straight pair.
Solution Approach 2:
The invention changes the permittivity parameter of the insulation board material in specific adjustment regions to control signal transmission characteristics. By varying the permittivity values in different regions of the insulation board, the patent achieves skew reduction through material property modification rather than geometric complexity, thereby reducing manufacturing costs associated with complex die shapes.
3Manufacturing precision
If the quasi-crossing region is used in the straight pair to equalize line lengths, then skew is reduced, but the straight pair shape becomes complicated and die adjustment becomes difficult
Solution Approach 1:
The invention extracts the skew adjustment function from the straight pair's shape and relocates it to the insulation board's permittivity distribution. By providing adjustment regions with different permittivity values in the insulation board, the patent separates the line routing (straight pairs remain straight) from the electrical characteristic adjustment, thereby eliminating the need for complex wave-shaped sections in the straight pair.
Solution Approach 2:
The invention segments the insulation board into regions with different permittivity values, specifically creating adjustment regions that interact only with the cross pair. This segmentation allows independent control of electrical characteristics for different line pairs without affecting their geometric shapes, enabling skew reduction while maintaining simple straight pair configurations.
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
This configuration effectively reduces signal transmission time lag between straight and cross pairs, allowing for easy adjustment and simplification of die shapes, thereby lowering manufacturing costs and improving the ease of re-adjustment without altering the punching die.
Implementation Method 1
adjustment regions which contact with the cross pairs and are made of a material having lower permittivity than that of the insulation board
Data Source
AI summary
A connecting blade includes an insulation board having an adjustment region; and paired differential lines disposed on the insulation board. Each of the paired differential lines has contact points at both ends thereof for connecting to a circuit connecting member. The paired differential lines include a straight pair and a cross pair. The straight pair is formed of two first lines not crossing each other. The cross pair is formed of two second lines having a crossing region where the two second lines cross each other without contacting with each other. The cross pair is arranged so that the cross pair contacts with the adjustment region at least partially. The adjustment region has a specific size and a permittivity so that a signal transmission time lag between the cross pair and the straight pair is reduced.