Titanium Coupling Layer Surface Modification for Electroless Plating
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional electroless plating methods face challenges in forming high precision metal films with sufficient adhesivity due to insufficient coupling of metal catalytic particles with the titanium coupling agent-based coupling layer, especially on substrates with complex surface shapes.
Innovation Solution
A pre-treatment method involving the formation of a titanium-based coupling layer followed by surface modification using a modifying liquid to create a flat surface, ensuring stable coupling of metal catalytic particles and subsequent uniform metal film formation through electroless plating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a titanium coupling agent-based coupling layer is formed to improve metal film adhesivity, then adhesivity is improved, but the surface shape becomes protrusion/recess which prevents sufficient coupling of metal catalytic particles
Solution Approach 1:
The patent applies preliminary action by performing a surface modification process on the titanium-based coupling layer before depositing metal catalytic particles. This modification process flattens the protrusion/recess surface shape, creating a uniform surface that enables sufficient coupling of metal catalytic particles while preserving the adhesivity benefits of the titanium coupling layer.
2Ease of manufacture
If electroless plating is performed with metal catalytic particles to form metal film, then metal film formation is achieved, but insufficient coupling of particles results in poor precision
Solution Approach 1:
The patent applies preliminary action by modifying the surface of the titanium-based coupling layer before the electroless plating process. This surface modification creates a flat, uniform surface that ensures sufficient coupling of metal catalytic particles, thereby enabling high-precision electroless plating while maintaining ease of metal film formation.
3Strength
If a self-assembled monolayer with metal catalytic particles is formed to improve adhesivity, then adhesivity is improved, but surface shape irregularities prevent uniform metal film deposition
Solution Approach 1:
The patent applies preliminary action by introducing a surface modification process between the formation of the self-assembled monolayer with metal catalytic particles and the metal film deposition. This modification flattens the surface irregularities while preserving the adhesivity-enhancing structure, thereby enabling both high adhesivity and uniform metal film deposition.
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 approach enables the secure and uniform deposition of metal films with improved adhesivity by modifying the surface of the titanium-based coupling layer to achieve stable metal catalytic particle coupling, even on substrates with protrusion/recess shapes, thereby enhancing the precision and reliability of the electroless plating process.
Implementation Method 1
a coupling layer forming process of forming a titanium-based coupling layer on a surface of the substrate with a titanium coupling agent
Implementation Method 2
a coupling layer modification process of modifying a surface of the titanium-based coupling layer by cleaning the surface of the titanium-based coupling layer with a modifying liquid
Implementation Method 3
it is possible to form a uniform metal film having sufficient adhesivity by the electroless plating with the metal catalytic particle
Data Source
AI summary
A pre-treatment method of plating and a plating system can perform a uniform plating process in which sufficient adhesivity on a surface of a substrate is obtained. The pre-treatment method of plating includes a coupling layer forming process of forming a titanium-based coupling layer 21b on the surface of the substrate with a titanium coupling agent; and a coupling layer modification process of modifying a surface of the titanium-based coupling layer 21b with a modifying liquid after the coupling layer forming process.