Flexible Printed Circuit with Bendable Connection Region
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Solution Overview
Problem
The existing manufacturing method for flexible printed circuits results in low space utilization on substrates, leading to material waste and increased costs due to the fixed angle of the circuits during production, which limits the efficient arrangement and usage of substrate space.
Innovation Solution
A flexible printed circuit design comprising a first region, a second region, and a connection region with concave contours that allow the connection region to be bent, forming a specific angle or shape, thereby increasing substrate space utilization without affecting manufacturing difficulties or performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If flexible printed circuits are arranged on substrate with fixed angles during manufacturing, then manufacturing process is simple, but space utilization ratio of substrate is extremely low (21.66%)
Solution Approach 1:
The connection region is designed to be bendable, transforming the rigid fixed-angle structure into a dynamic flexible structure. This allows the FPC to adapt its shape during use while maintaining simple manufacturing processes, resolving the contradiction between manufacturing simplicity and space utilization.
Solution Approach 2:
The connection region with concave contours enables the FPC to fold and nest into compact configurations when bent, allowing multiple circuits to be arranged more densely on the substrate. This nesting capability increases space utilization without complicating the manufacturing process.
2Productivity
If flexible printed circuits are bent to fixed angles during manufacturing, then mass production is enabled, but material waste increases and cost increases
Solution Approach 1:
By making the connection region flexible and bendable rather than fixed, the design allows for more efficient substrate utilization during mass production. The FPC can be arranged in optimized patterns on the substrate before bending, reducing material waste while maintaining mass production capabilities.
Solution Approach 2:
The invention changes the geometric parameters of the connection region by introducing concave contours, which enable the FPC to achieve required angles after manufacturing. This parameter change allows for better substrate utilization during production, reducing material waste while maintaining productivity.
3Ease of manufacture
If flexible printed circuits have fixed angles, then manufacturing is easier, but space utilization ratio remains low
Solution Approach 1:
The FPC is segmented into distinct regions: rigid regions for structural stability and a flexible connection region with concave contours for bending. This segmentation allows the majority of the circuit to maintain simple fixed-angle manufacturing while the connection region provides the flexibility needed for space optimization.
Solution Approach 2:
The connection region introduces an additional degree of freedom by enabling bending in a third dimension. This dimensional change allows the FPC to achieve compact three-dimensional configurations that increase substrate space utilization without complicating the two-dimensional manufacturing process.
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 design enhances substrate space utilization from 21.66% to 38.1%, reducing material waste and production costs by allowing the flexible printed circuits to be bent during use to form required angles or shapes, while maintaining performance.
Implementation Method 1
a flexible printed circuit capable of being bent to present a particular angle
Data Source
AI summary
A flexible printed circuit comprises a first region, a second region, and a connection region. The connection region connects the first region and the second region, and has a surface. When the flexible printed circuit is used, the connection region can be bent so that part of the surface overlaps in order to present a particular angle between the first region and the second region.