Multilayer Stacked Flat Cable With Localized Separation For Hinge Rotation
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Solution Overview
Problem
Conventional flexible flat cables face issues with smooth rotation, flexibility, and robustness when used in electronic devices with diverse hinge structures, such as notebook computers and mobile phones, due to their structure limitations in signal transmission.
Innovation Solution
A multilayer stacked circuit arrangement with localized separation sections is introduced, where a bonding substance layer is used to stack flat cables with conductive vias connecting signal transmission lines between non-separation sections, enhancing flexibility and robustness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional flat cable is used for signal transmission in hinge structures, then the cable can be easily put through narrow spaces, but the smoothness of rotation and flexibility are insufficient
Solution Approach 1:
The flat cable is divided into multiple independent conductor sections (first flat cable and second flat cable) that are stacked and bonded together. Each section can independently flex and rotate, allowing the cable to maintain smooth rotation while passing through narrow hinge spaces. The segmentation enables each conductor to optimize its flexibility without compromising the others.
Solution Approach 2:
The patent transitions from a single-layer flat cable to a multilayer stacked arrangement, adding the vertical dimension to the cable structure. By stacking multiple flat cables and bonding them together, the invention achieves enhanced flexibility and rotation smoothness while maintaining the ability to pass through narrow spaces. The stacked configuration allows the cable to bend and rotate more smoothly by distributing flexing across multiple layers.
2Reliability
If a conventional flat cable is used for signal transmission, then the cable structure is simple, but the robustness against cable flexing is insufficient
Solution Approach 1:
Multiple flat cables are merged into a single stacked assembly through bonding. The first flat cable and second flat cable are bonded together at multiple bonding sections, creating a unified structure that maintains the flexibility of individual cables while gaining the robustness of a combined assembly. This merging provides mechanical support and distributes flexing stresses across multiple conductors.
Solution Approach 2:
The invention creates a composite cable structure by bonding multiple flat cable layers together. The stacked arrangement forms a composite structure where each layer contributes to the overall robustness against flexing. The bonding substance and the multilayer configuration work together to provide enhanced mechanical strength and flexibility, making the cable more robust while maintaining signal transmission capability.
3Reliability
If multiple flat cables are stacked to improve flexibility, then the robustness against flexing improves, but the manufacturing complexity increases
Solution Approach 1:
The flat cables are pre-positioned and pre-bonded in the stacked configuration before final assembly. The bonding sections are prepared in advance, and the cables are aligned and bonded together in a controlled manner. This preliminary action simplifies the overall manufacturing process by breaking down the complex task of creating a multilayer stacked cable into manageable steps, making the manufacturing of flexible and robust cables more feasible.
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
The solution provides improved flexibility and robustness against cable flexing, addressing the limitations of conventional flat cables in practical applications by ensuring smooth signal transmission in complex electronic device structures.
Implementation Method 1
arranging a bonding substance layer between a first non-separation section of a first flat cable and a second non-separation section of a second flat cable to have the first flat cable and the second flat cable stacked and properly positioned with respect to each other
Implementation Method 2
At least one conductive via is formed and extends between the first non-separation section of the first flat cable and the second non-separation section of the second flat cable. At least some of second signal transmission lines of the second flat cable are connected through the conductive via to first signal transmission lines of the first flat cable
Data Source
AI summary
A multilayer stacked circuit arrangement with localized separation section, has a first flat cable and first signal transmission lines arranged on the first flat cable. A second flat cable is stacked on and bonded to the first flat cable. The second flat cable further has signal transmission lines arranged on it. A bonding substance layer is formed between a first non-separation section of the first flat cable and a second non-separation section of the second flat cable for properly stacking the first and second flat cables where the separation sections are spaced apart from each other. A conductive via extends between the first non-separation section and the second non-separation section. At least some of the second signal transmission lines of the second flat cable are connected through the conductive via to the first signal transmission lines of the first flat cable.