Electrophoretic Deposition for Ceramic Component Insulation
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Solution Overview
Problem
Existing methods for producing ceramic components, such as piezoactuators, are complex and costly due to the need for multiple processing steps like prepatterning and repatterning of insulating layers, which complicates the production process and increases costs.
Innovation Solution
A method involving electrophoretic deposition of insulating material on the outer edges of internal electrodes within a ceramic component, allowing for patterned deposition without the need for additional patterning steps, thereby simplifying the process and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional methods (laser patterning, photopatterning, electrochemical etching) are used to create insulating layers, then insulating layers can be formed on internal electrodes, but the production process becomes complex and expensive due to multiple separate processing steps
Solution Approach 1:
The patent combines the insulating layer formation and electrode patterning into a single electrophoretic deposition step. The electrophoretic process simultaneously deposits insulating material on electrode edges and creates the desired pattern, eliminating the need for separate patterning steps (laser, photo, or electrochemical etching) and subsequent insulating material application steps.
Solution Approach 2:
The electrophoretic deposition process is self-patterning based on the electric field distribution. The insulating material automatically deposits on electrode edges where the electric field is strongest, creating the required pattern without external patterning tools or additional processing steps. The process uses the component's own electrical properties to guide material deposition.
2Manufacturing precision
If multiple separate processing steps (prepatterning, photopatterning, electrochemical etching) are implemented, then insulating layers can be precisely patterned, but production costs increase due to additional technology and apparatus requirements
Solution Approach 1:
The electrophoretic process automatically patterns the insulating material based on the electric field distribution around the electrodes. The material deposits precisely where needed (on electrode edges) without requiring external patterning tools, photomasks, or complex etching apparatus, thereby reducing production costs while maintaining precision.
Solution Approach 2:
The patent replaces mechanical and chemical patterning systems (laser beams, photomask alignment systems, electrochemical etching baths) with an electrophoretic field-based system. This substitution eliminates the need for complex patterning apparatus and reduces production costs while achieving the same patterning function.
3Ease of manufacture
If electrophoretic deposition is used to deposit insulating material on internal electrode edges, then the production process is simplified and costs are reduced, but the method must ensure precise and selective deposition only on intended electrode edges
Solution Approach 1:
The electrophoretic process creates local differences in deposition based on the electric field distribution. The insulating material deposits selectively on electrode edges where the electric field is strongest, while avoiding other areas. This local quality control ensures precise patterning without requiring external patterning tools.
Solution Approach 2:
The patent controls the deposition process by adjusting electrophoretic parameters (electric field strength, deposition time, material concentration) to achieve selective deposition on electrode edges. By optimizing these parameters, the process ensures that insulating material deposits only where required, maintaining manufacturing precision while simplifying the overall 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
This method simplifies the production process by eliminating the need for complex patterning steps, reduces production rejects, and ensures reliable insulation and electrical contact-connections, leading to cost-effective and efficient ceramic component manufacturing.
Implementation Method 1
b) contacting the first outer surface of the main body with a composition comprising an electrophoretically mobile insulating material and electrophoretically depositing the insulating material on outer edges of the internal electrodes on the first outer surface of the main body
Data Source
AI summary
A method of producing a ceramic component includes a) providing a main body having internal electrodes, outer edges of which are located on at least one first outer surface of the main body, b) contacting the first outer surface of the main body with a composition including an electrophoretically mobile insulating material and electrophoretically depositing the insulating material on outer edges of the internal electrodes on the first outer surface of the main body, and c) producing an insulating layer from the insulating material on the outer edges of the internal electrodes.