Connector Bar-Shaped Ground Members for Stability
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Solution Overview
Problem
Existing HDMI connectors experience poor signal transmission characteristics due to instability and easy detachability from substrates, leading to impedance imbalance and detachment under external or internal stress.
Innovation Solution
Incorporating electrically conductive bar-shaped members outside the outermost contacts in two rows, which are fixed to the substrate and serve as additional ground terminals, enhancing stability and impedance balance without compromising signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the housing has a cutout to expose the wide portions of contacts for static electricity discharge, then static electricity can be discharged from signal terminals to ground terminals, but the contacts are held with reduced force and the connector becomes easily detachable from the substrate
Solution Approach 1:
The invention divides the protective function into two segments: the housing cutout for static electricity discharge and the bar-shaped members for mechanical protection. This segmentation allows each component to specialize in one function without compromising the other.
Solution Approach 2:
The bar-shaped members act as intermediary protective elements between the external environment and the contacts. They provide mechanical support and protection to the outermost contacts, preventing detachment while allowing the housing cutout to perform its static electricity discharge function.
2Loss of information
If the outermost contacts are exposed for signal transmission, then signal transmission can occur, but the outermost contacts are easily detachable from the substrate resulting in poor signal transmission characteristic
Solution Approach 1:
The bar-shaped members are installed beforehand to provide preliminary protection to the outermost contacts. This preliminary protective action prevents detachment before signal transmission is affected, ensuring both signal integrity and contact stability.
3Reliability
If additional bar-shaped members are added to protect contacts, then the connector becomes firmly attached to the substrate, but the device complexity increases
Solution Approach 1:
The bar-shaped members serve multiple functions simultaneously: they act as mechanical protectors for the outermost contacts, provide additional grounding paths, and serve as structural support elements. This multi-functionality reduces the need for separate protective components, thereby limiting the increase in device complexity.
Data Source
AI summary
A connector mounted on a substrate includes: a plurality of contacts; and a housing, wherein the plurality of contacts include a plurality of first contacts arranged next to one another in a first row and a plurality of second contacts arranged next to one another in a second row parallel to and apart from the first row, the connector further including: for the first row, at least one electrically conductive first bar-shaped member which is present further outward than a first outermost one of the first contacts, which is fixed to the substrate, and which is supported by the housing; and for the second row, at least one electrically conductive second bar-shaped member which is present further outward than a first outermost one of the second contacts, which is fixed to the substrate, and which is supported by the housing.