Coaxial Cable Connection Structure with Substrate Level Difference
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Solution Overview
Problem
Conventional cable connection structures for coaxial cables on substrates result in increased height and thickness due to the need for slits and external conductor placement, which complicates connections and limits their application, especially in devices like ultrasonic endoscopes.
Innovation Solution
A cable connection structure featuring a substrate with a first flat section and a second flat section of reduced thickness, connected via a level difference surface, where the coaxial cable's conductors are bonded to electrodes on these sections using conductive bonding members, reducing the attachment height and preventing thickness increases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a slit is provided on the substrate and external conductor is placed in the slit, then the attachment height of the coaxial cable is reduced, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The substrate is divided into two distinct flat sections at different thickness levels, with the first flat section having greater thickness than the second flat section. This segmentation allows the external conductor to be positioned at an optimized height without requiring complex slits or recesses, thereby reducing attachment height while maintaining structural simplicity.
Solution Approach 2:
Instead of creating a slit (one-dimensional modification) in the substrate, the invention uses a two-dimensional approach by forming two flat sections at different thickness levels. This dimensional change eliminates the need for complex slit structures while achieving the same height reduction effect.
2Length of moving object
If a slit is provided on the substrate for cable connection, then the attachment height is reduced, but the manufacturing precision and quality control become more difficult
Solution Approach 1:
The substrate is segmented into two flat sections with different thicknesses, providing distinct mounting surfaces for the external conductor. This segmentation creates well-defined positioning surfaces that are easier to manufacture with high precision compared to slit structures, thereby improving manufacturing precision while reducing attachment height.
Solution Approach 2:
Different regions of the substrate are given different thickness qualities - the first flat section has greater thickness while the second flat section has reduced thickness. This local quality differentiation allows for optimized cable attachment height without compromising overall manufacturing precision, as each section can be independently controlled during fabrication.
3Device complexity
If conventional cable connection structures are used, then the connection is simplified, but the device thickness increases which limits application in compact devices
Solution Approach 1:
The substrate is divided into two flat sections at different thickness levels, allowing the external conductor to be mounted on the thinner second flat section. This segmentation enables reduced device thickness while maintaining simple connection structures, resolving the contradiction between connection simplicity and compactness.
Solution Approach 2:
The invention transitions from a single-plane connection structure to a multi-level structure with two flat sections at different thicknesses. This dimensional approach allows cables to be connected at an optimized height, reducing overall device thickness while keeping the connection process simple and straightforward.
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 allows for a lower attachment height of the coaxial cable, simplifies connections, and maintains electrical and mechanical integrity, making it suitable for applications such as ultrasonic endoscopes without the limitations of conventional techniques.
Implementation Method 1
at least one of the conducting wire is connected to a connecting electrode formed on the second flat section
Data Source
AI summary
A cable connection structure includes a cable that has an outer skin and at least one conducting wire, and a substrate to which the cable is connected at a main surface side having a hard wiring, wherein the substrate includes, at the main surface side, a first flat section having flatness and a second flat section having flatness thinner than the first flat section via a level difference surface from the first flat section and an end part of the outer skin is arranged on the second flat section and at least one of the conducting wire is connected to a connecting electrode formed on the second flat section.