Flexible Flat Cable Laser Patterning for Variable Trace Widths
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Solution Overview
Problem
Conventional FFC manufacturing processes are limited by trace dimensions, current-carrying capacity, connector compatibility, and lack of flexibility for openings, leading to material waste and increased costs.
Innovation Solution
A reel-to-reel process using laser ablation to create flexible flat cables with variable trace widths, openings, and laminated PET layers for insulation and protection, enabling precise cutting and patterning to enhance design flexibility and connector compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional manufacturing processes are used for FFCs, then the manufacturing process is simple, but the trace dimensions are limited and current-carrying capacity is restricted
Solution Approach 1:
The patent replaces conventional mechanical manufacturing methods with laser technology. The laser system enables precise control of trace dimensions including variable width and thickness, while also creating openings and patterns without mechanical contact. This substitution resolves the contradiction by providing high manufacturing precision through non-mechanical means.
Solution Approach 2:
The patent utilizes laser parameters (power, speed, focus) to dynamically control trace dimensions during manufacturing. By changing laser parameters, the system can produce traces with varying width and thickness along their length, and create openings at specific locations. This parameter control resolves the dimension limitations of conventional processes.
2Adaptability or versatility
If uniform trace width and length requirements are maintained, then manufacturing is straightforward, but flexibility for openings and design variations is limited
Solution Approach 1:
The patent introduces dynamic control capabilities to the manufacturing process through laser technology. The system can dynamically adjust trace width, create openings at various positions, and modify trace patterns during manufacturing. This dynamic adaptability allows design flexibility without compromising manufacturing ease, as all changes are controlled through laser parameters rather than physical tooling changes.
Solution Approach 2:
The patent enables different sections of the FFC to have different properties. Traces can have variable width at different locations, openings can be created at specific positions, and the laser can selectively remove or modify material where needed. This local quality control provides design flexibility while maintaining manufacturing simplicity through centralized laser control.
3Manufacturing precision
If material is cut to precise dimensions, then trace accuracy is improved, but material waste increases
Solution Approach 1:
The patent replaces mechanical cutting with laser ablation and selective removal. The laser can precisely define trace boundaries and create openings without generating mechanical waste material in the same way mechanical cutting does. The energy-based process allows for greater precision with reduced material loss.
Solution Approach 2:
The patent uses laser parameters to control material removal precisely. By adjusting power, speed, and focus, the laser can remove only the necessary amount of material to define trace boundaries and create openings, minimizing waste while maintaining high accuracy. The parameter control allows for precise material deposition and removal.
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 process allows for wider traces to handle higher currents, flexible connection points, reduced material waste, and improved connector compatibility, while maintaining precise control over trace dimensions and openings.
Implementation Method 1
The processes use a laser ablation technique to generate layer patterns
Implementation Method 2
laminating both the second material and the third material to the first trace and the second trace to form a laminated product
Data Source
AI summary
A reel-to-reel flex circuit manufacturing process can be used to manufacture an FFC or flex circuit products. The processes use a laser ablation technique to generate layer patterns. The reel-to-reel process can be performed to manufacture flexible flat cables that have conductive traces that have different widths and that also have openings, such as pads, at desired locations.