Vehicle Pane Coating Pattern for High-Frequency Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle glazings with electrically conductive coatings impair high-frequency electromagnetic radiation transmission and reception, leading to visibility and aesthetic issues, and are costly and time-consuming to produce.
Innovation Solution
A pane with a transparent, electrically conductive coating featuring sinusoidal-shaped decoated regions that form electrically isolated zones, allowing high-frequency electromagnetic radiation transmission while maintaining optical clarity and aesthetics, produced using laser patterning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If transparent electrically conductive coatings are applied to vehicle glazings, then protection against overheating and cooling is improved, but transmission of high-frequency electromagnetic radiation is blocked
Solution Approach 1:
The continuous electrically conductive coating is segmented into electrically isolated zones by decoated regions. This segmentation breaks the conductive path while maintaining local conductive properties, allowing the coating to provide thermal protection in covered areas while permitting high-frequency electromagnetic radiation transmission through the decoated regions.
Solution Approach 2:
Different regions of the coating are given different properties: covered regions maintain full electrical conductivity for thermal protection, while decoated regions are removed to allow electromagnetic radiation transmission. This local differentiation resolves the contradiction by providing both functions in appropriate locations.
2Reliability
If localised decoated regions are created for communication windows, then transmission of electromagnetic radiation is enabled, but optical clarity and aesthetics are impaired
Solution Approach 1:
The decoated regions are designed with sinusoidal curved patterns instead of straight lines or angular shapes. This curvature makes the decoated regions visually less conspicuous and more aesthetically pleasing while still providing sufficient open area for electromagnetic radiation transmission.
Solution Approach 2:
The decoated regions extend in multiple directions with sinusoidal patterns, creating a two-dimensional network rather than simple linear strips. This dimensional approach maximizes transmission area while distributing the visual impact across the surface.
3Reliability
If grid-formed decoating is applied to enable high-frequency transmission, then electromagnetic radiation transmission is improved, but production time and cost increase
Solution Approach 1:
The sinusoidal curved patterns of decoated regions are more efficiently produced by laser technology than rectilinear grid patterns. The continuous curved paths allow for faster laser scanning without the need for frequent direction changes and positioning adjustments required by grid patterns, thereby reducing production time and cost.
Solution Approach 2:
The sinusoidal patterns provide a periodic, rhythmic path for laser decoating that optimizes the laser scanning process. This periodic motion allows for more efficient material removal compared to the stop-start nature of grid pattern fabrication, improving productivity.
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 pane enables efficient transmission of high-frequency electromagnetic radiation for mobile telephony and navigation without significant visual impairment, reducing production time and costs.
Implementation Method 1
These transparent, electrically conductive coatings protect, for example, interiors against overheating due to sunlight or against cooling, by reflecting incident thermal radiation
Implementation Method 2
at least one pattern, which is formed by decoated, linear regions within the transparent, electrically conductive coating such that the linear regions are partially in contact with one another
Data Source
AI summary
A pane, in particular a vehicle pane, includes at least one first pane with an outer side and an inner side, at least one transparent, electrically conductive coating, which is arranged on the outer side and/or on the inner side of the first pane, and at least one pattern, which is formed by decoated, linear regions within the transparent, electrically conductive coating such that the linear regions are partially in contact with one another and, as a result, form a plurality of electrically isolated zones within the coating, wherein the decoated linear regions have a sinusoidal shape, wherein the pane has regions with different amplitude and/or frequency of the sinusoidal decoated regions.