Cable Substrate Dummy Pattern Slit Design
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Solution Overview
Problem
Existing cable substrates are limited to one-to-one connections, restricting signal transmission paths and design flexibility, and often suffer from material tearing defects during branching.
Innovation Solution
A cable substrate design featuring an insulating layer with a slit portion and a dummy pattern exposed to the slit, allowing for multiple connections while preventing damage by functioning as a stopper during processing and enhancing flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a multiple connection structure is used, then signal transmission path and design flexibility are improved, but material tearing defects occur in the branching region
Solution Approach 1:
A dummy pattern is disposed in the branching region before the actual connection is made. This dummy pattern serves as a preliminary structural element that prevents material tearing when the substrate is bent or flexed during multiple connections. The dummy pattern is removed after serving its protective function during the connection process.
Solution Approach 2:
The dummy pattern acts as an intermediary element in the branching region. It mediates between the conflicting requirements of creating multiple connection paths and maintaining substrate integrity. By providing temporary structural support during the connection process, it enables the multiple connections to be made without causing material tearing.
2Reliability
If a one-to-one connection structure is used, then substrate integrity is maintained, but signal transmission path and design flexibility are limited
Solution Approach 1:
The dummy pattern is disposed in advance in the branching region to enable future multiple connections while maintaining substrate integrity during the connection process. This preliminary structural element allows the substrate to be flexed and bent without tearing, thereby enabling design flexibility and multiple signal transmission paths.
Solution Approach 2:
The substrate is divided into multiple connection regions through the use of a dummy pattern in the branching region. This segmentation allows for multiple independent connections to be made while each connection path maintains its own structural integrity, enabling both substrate reliability and connection flexibility.
3Adaptability or versatility
If the substrate is separated into multiple branches, then connection versatility is improved, but material tearing occurs at the separation area
Solution Approach 1:
A dummy pattern is disposed in the separation area before the substrate is divided into multiple branches. This dummy pattern provides preliminary structural reinforcement that prevents material tearing when the substrate is separated into multiple connection paths. The dummy pattern is removed after serving its protective function during the separation process.
Solution Approach 2:
The dummy pattern provides beforehand cushioning in the separation area where material tearing is most likely to occur. By providing temporary structural support in advance, it cushions against the harmful effects of bending and flexing during the branching process, preventing material tearing while enabling connection versatility.
Data Source
AI summary
A cable substrate includes an insulating layer, a slit portion penetrating through at least a portion of the insulating layer in a thickness direction of the insulating layer, and a dummy pattern disposed on the insulating layer. At least a portion of the dummy pattern is exposed to the slit portion.