Double-sided electrodynamic screen films
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Solution Overview
Problem
Existing electrodynamic screen (EDS) technologies face challenges in manufacturing complexity, robustness, and efficiency due to the need for patterned dielectric materials and insulating layers at electrode cross-over points, which increase costs and risk of dielectric breakdown and electrode shorting, while also compromising transparency and conductivity.
Innovation Solution
A double-sided electrode film configuration with interlaced parallel conductive electrodes on both surfaces of a transparent dielectric film, eliminating the need for insulating layers at cross-over points and simplifying fabrication, and enhancing reliability by preventing shorts and maintaining high transparency and conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If patterned dielectric materials and insulating layers are used at electrode cross-over points, then electrode shorting is prevented, but manufacturing complexity and cost increase
Solution Approach 1:
The patent removes the insulating layer entirely by eliminating the cross-over structure. Electrodes are configured to meet directly at electrode edges without crossing, extracting the harmful insulating layer and patterned dielectric materials from the system while maintaining electrical isolation through geometric design rather than material barriers.
Solution Approach 2:
Instead of using insulating materials to prevent shorting at cross-over points, the patent inverts the approach by designing electrodes that never cross. The electrodes meet edge-to-edge in an interlaced pattern, using the absence of cross-overs rather than the presence of insulators to prevent shorting.
2Reliability
If patterned dielectric materials and insulating layers are used at electrode cross-over points, then electrode shorting is prevented, but manufacturing cost increases
Solution Approach 1:
The patent removes the insulating layer entirely by eliminating the cross-over structure. Electrodes are configured to meet directly at electrode edges without crossing, extracting the harmful insulating layer and patterned dielectric materials from the system while maintaining electrical isolation through geometric design rather than material barriers.
Solution Approach 2:
The patent replaces expensive insulating materials and complex patterning processes with a simple geometric electrode configuration. The interlaced electrode design uses basic fabrication techniques without requiring additional costly materials or alignment-critical patterning steps.
3Illumination intensity
If transparent conductive electrodes are used, then transparency is improved, but conductivity decreases
Solution Approach 1:
The patent merges multiple transparent conductive electrode layers into an interlaced configuration where electrodes on opposite sides work together. This combines the transparency benefits of thin transparent conductors with enhanced conductivity through the synergistic interaction of interlaced electrode pairs, achieving both high transparency and improved electrical performance.
Solution Approach 2:
The patent creates a composite electrode structure using interlaced transparent conductive layers from both sides of the substrate. This composite configuration combines the optical transparency of thin transparent conductors with the electrical conductivity of a multi-layer interconnected system, achieving properties superior to single-layer transparent electrodes.
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 simplifies the manufacturing process, reduces costs, and improves the reliability and performance of EDS systems by eliminating the need for insulating layers, while maintaining high transparency and conductivity, effectively generating robust in-plane electric fields for large-area applications.
Implementation Method 1
a first set of parallel conductive electrodes connected to a first bus; a second set of parallel conductive electrodes connected to a second bus, wherein elements of the first electrode pattern do not cross over elements of the second electrode pattern
Data Source
AI summary
An electrode film includes a first electrode pattern having a first set of parallel conductive electrodes and a second electrode pattern having a second set of parallel conductive electrodes disposed on a first surface of a transparent film, wherein elements of the first electrode pattern do not cross over elements of the second electrode pattern. A third electrode pattern having a third set of parallel conductive electrodes is disposed on a second surface of the transparent film, wherein the first, second and third sets of parallel conductive electrodes are arranged in an interlaced pattern. The electrode patterns are configured to be connected to respective power sources of electrical power supplying respective waveforms to generate a time-varying electric field pattern above a surface of the electrode film.