Conductive Ink for EHD Printing on 3D Surfaces
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing conductive ink technologies face challenges in precisely printing conductive patterns on three-dimensional substrates, resulting in complex processes and difficulties in achieving uniform line widths and pitches.
Innovation Solution
A conductive ink composition for EHD jet printing that includes a binder, charge transfer element, conductive element, and electric field reaction element, which forms continuous conformal conductive lines on three-dimensional surfaces with a controlled aspect ratio, and can be thermally or photocured to achieve precise conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional printing methods are used on three-dimensional substrates, then the substrate can be printed, but the process becomes complicated and uniform line width and pitch cannot be achieved
Solution Approach 1:
The patent replaces traditional mechanical contact printing methods with electrohydrodynamic (EHD) printing, which uses electric fields to control inkjet discharge. This substitution eliminates the need for complex mechanical positioning and contact mechanisms, enabling precise and uniform conductive pattern formation on three-dimensional substrates without complicated processes
Solution Approach 2:
The patent utilizes changes in electric field parameters (voltage, frequency) to control the discharge characteristics of the conductive ink. By adjusting these electrical parameters, the system achieves precise control over line width and pitch uniformity on three-dimensional surfaces, replacing mechanical parameter adjustments with electrical control
2Manufacturing precision
If contact printing is performed on 3D surfaces, then printing can be achieved, but precise printing with uniform line width and pitch becomes difficult
Solution Approach 1:
The patent replaces mechanical contact printing with non-contact electrohydrodynamic printing. The EHD jet printing system uses electric fields to propel conductive ink directly onto the substrate without physical contact, eliminating the complexity of maintaining contact on irregular 3D surfaces while achieving uniform line width and pitch through electrical field control
3Manufacturing precision
If conductive ink is printed on three-dimensional substrates, then conductive patterns can be formed, but achieving continuous conformal conductive lines with controlled aspect ratio is challenging
Solution Approach 1:
The patent employs precise control of electric field parameters (voltage amplitude, frequency, pulse width) to regulate the discharge rate and trajectory of conductive ink. This electrical parameter control enables the formation of continuous conformal conductive lines with precisely controlled aspect ratios on three-dimensional substrates, ensuring both reliability and manufacturing precision
Solution Approach 2:
The system incorporates feedback control mechanisms that monitor the discharge characteristics and adjust electric field parameters in real-time. This feedback ensures continuous and conformal deposition of conductive material, maintaining controlled aspect ratios and preventing discontinuities in the conductive patterns on three-dimensional surfaces
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
Enables direct and precise formation of conductive wiring on three-dimensional substrates with uniform and fine line widths, efficiently utilizing the EHD principle to control ink discharge and ensure consistent printing quality.
Implementation Method 1
When an electric field is applied, an electrical polarization force occurs between the electrode and the liquid, causing the fluid to move
Implementation Method 2
Electrohydrodynamics (EHD), first developed in the 1960s, is a field of study related to a method of controlling the flow of a liquid using an electric field
Implementation Method 3
At this time, it is preferable that the conductive pattern is thermally or photocured after spraying
Implementation Method 4
At this time, it is preferable that the conductive pattern is thermally or photocured after spraying
Data Source
AI summary
The present disclosure relates to a conductive ink composition, which is a printable conductive ink composition for forming a conductive pattern on a substrate using an EHD (Electrohydrodynamic) method. When the composition is sprayed onto a substrate having a three-dimensional surface to form a conductive pattern, the conductive pattern forms a conformal line on the three-dimensional surface.