Board-to-Board Connector Layout for Dense High-Speed Mating
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Solution Overview
Problem
Conventional board-to-board connectors are limited by their dual-row configurations, which restrict the number of pins available, constraining their ability to support high-density and high-speed connections required in modern electronic systems.
Innovation Solution
The development of high-density, high-speed board-to-board connectors featuring a housing with channels arranged in an array of rows and columns, containing plug terminals with varying heights and offset intermediate portions, and conductive members for power transmission, allowing for increased terminal density and reliable connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional dual-row configurations are used, then device complexity is reduced and ease of manufacture is improved, but terminal density and connection capacity are limited
Solution Approach 1:
The patent transitions from conventional dual-row configurations to a multi-row array configuration (at least three rows and three columns), adding dimensional complexity to increase terminal density. This dimensional expansion allows more terminals to be packed into the same footprint area, directly resolving the contradiction between terminal density and structural simplicity.
Solution Approach 2:
The connector is segmented into multiple independent rows and columns of channels, each capable of housing terminals. This segmentation allows the connector to scale in density by adding more rows and columns without fundamentally changing the basic terminal structure, enabling high terminal density while maintaining manufacturing simplicity through modular repetition.
2Reliability
If all terminals in a row engage simultaneously, then connection speed is improved, but mating force and reliability are compromised
Solution Approach 1:
The patent implements staggered engagement heights where terminals in the same row have different heights, causing them to engage with the mating connector at different times during the mating process. This periodic/staggered engagement distributes the mating force over time and reduces peak forces, improving reliability while maintaining acceptable mating speed through the streamlined multi-row array structure.
Solution Approach 2:
Each terminal within a row is given a different local quality in terms of engagement height, creating a gradient structure. This local variation in height allows terminals to engage sequentially rather than simultaneously, reducing stress concentration and improving overall mating reliability without requiring complex timing mechanisms.
3Reliability
If terminal heights are varied to enable staggered engagement, then mating reliability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The staggered height variation is implemented by segmenting the terminal array into distinct rows with defined height differences. Rather than requiring precise control of every individual terminal height, the design segments terminals into groups (rows) with characteristic height levels, simplifying manufacturing precision requirements while maintaining the staggered engagement benefit.
Data Source
AI summary
High density, high speed board-to-board connectors include an array of terminals configured for signal transmission. In some embodiments, adjacent plug terminals have different heights so as to mate with respective receptacle terminals at different times and thereby distribute mating forces over time. In some embodiments, relatively tall plug terminals have curved intermediate portion that offset tails from mating ends so as to enable both reliable support for the relatively tall plug terminals with higher gravity centers and the use of the same footprint of connectors with relatively short plug terminals. In some embodiments, each receptacle terminal has a mating end with beams. Each beam has a flat portion and a curved portion helically extending from the flat portion and curving toward the curved portion of a respective beam. In some embodiments, a connector has a conductive member disposed to housing sides and configured for power transmission.