Melamine Derivative Insulating Layer for PCB Adhesion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing insulating layers for multilayer printed circuit boards face challenges in achieving excellent adhesion to patterned metal layers, particularly due to the limitations of melamine's insolubility in most solvents, which hinders its dispersion and development with weak alkali solutions, making it difficult to form fine patterns.
Innovation Solution
The development of an insulating layer comprising a patterned polymer resin layer containing an alkali-soluble resin, a thermosetting binder, and a melamine derivative with a specific chemical structure, which enhances adhesion to patterned metal layers by improving compatibility and reactivity with the thermosetting binder.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If melamine is used to improve adhesion to patterned metal layers, then adhesion is enhanced, but the material becomes insoluble in most solvents and difficult to disperse and develop with weak alkali solutions
Solution Approach 1:
The patent modifies the physical and chemical parameters of melamine by introducing alkyl groups with carboxyl groups or amine groups with carboxyl groups. This chemical modification changes the solubility parameters of melamine, making it soluble in specific solvents while maintaining its adhesion-enhancing properties. The modified melamine derivative can now be dispersed and developed with weak alkali solutions, resolving the contradiction between adhesion strength and ease of manufacture.
Solution Approach 2:
The patent creates a composite material system where melamine derivative is combined with alkali-soluble resin and thermosetting binder. This composite approach allows the melamine derivative to contribute adhesion properties while the alkali-soluble resin provides solubility and developability. The synergistic combination resolves the contradiction by distributing different functions across multiple materials within the insulating layer composition.
2Manufacturing precision
If a weak alkali solution is used for development to form fine patterns, then fine pattern formation is enabled, but the development process becomes more difficult due to melamine's insolubility
Solution Approach 1:
The patent changes the chemical parameters of melamine to create a derivative that is compatible with weak alkali solutions. This allows the development process to use weak alkali solutions for fine pattern formation without encountering the insolubility problem of conventional melamine. The modified melamine derivative dissolves and develops properly, enabling both fine pattern formation and ease of manufacture.
3Strength
If melamine structure is used to improve adhesion, then adhesion to patterned metal layer is enhanced, but the material is not easily developed and requires complex processing
Solution Approach 1:
The patent modifies melamine's chemical parameters to create a derivative with improved solubility characteristics. This single modification reduces fabrication process complexity by eliminating the need for complex dispersion and development procedures while maintaining the adhesion-enhancing properties of the original melamine structure.
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 proposed insulating layer achieves excellent adhesion to patterned metal layers, facilitating the formation of fine patterns and improving the overall performance and reliability of multilayer printed circuit boards.
Implementation Method 1
a melamine derivative having a specific chemical structure, which enhances adhesion to patterned metal layers by improving compatibility and reactivity with the thermosetting binder
Implementation Method 2
an insulating layer comprising a patterned polymer resin layer containing an alkali-soluble resin
Data Source
AI summary
The present disclosure provides an insulating layer for a multilayer printed circuit board, a multilayer printed circuit board including the same, and a method for fabricating the same. The insulating layer of the present disclosure includes a polymer resin layer containing a melamine derivative, and thus may have excellent adhesion to a patterned metal layer.