Anisotropic Conductive Film Composition for Display Panel Corrosion
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Solution Overview
Problem
Display devices suffer from screen defects due to corrosion of the display panel's metal components in high temperature and high humidity environments, where electrolytes can cause corrosion.
Innovation Solution
An anisotropic conductive film (ACF) is developed that includes a compound represented by Chemical Formula 1, which forms chemical bonds with the metal surface of the display panel, blocking electrolyte ions and preventing corrosion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional ACF is used in high temperature and high humidity environment, then electrical connection function is maintained, but metal components of display panel corrode due to electrolyte contact
Solution Approach 1:
The patent introduces a corrosion inhibitor compound as an intermediary substance between the electrolyte and the metal components of the display panel. This compound specifically binds to metal surfaces through coordination bonds, forming a protective barrier that prevents electrolyte ions from contacting and corroding the metal. The intermediary layer maintains electrical connection functionality while blocking harmful electrolyte penetration.
Solution Approach 2:
The patent creates a composite protective film by combining the corrosion inhibitor compound with the ACF matrix. This composite structure integrates the conductive particles, binder resin, and corrosion inhibitor into a unified material system that simultaneously provides electrical connectivity, mechanical adhesion, and corrosion protection. The composite nature allows multiple functions to be achieved within a single layer.
2Reliability
If corrosion inhibitor compound is added to ACF, then corrosion protection is improved, but adhesion and mechanical properties must not be degraded
Solution Approach 1:
The patent optimizes the concentration parameter of the corrosion inhibitor compound within the ACF, maintaining it within a specific range (0.1-10 wt%, preferably 0.5-5 wt%). This parameter control ensures sufficient corrosion protection while preventing excessive inhibitor content from interfering with the polymerization reaction or degrading the mechanical properties and adhesion of the film.
Solution Approach 2:
The corrosion inhibitor compound exhibits local action by specifically binding to metal surface sites where corrosion would initiate. The inhibitor molecules concentrate at the metal-ACF interface through coordinate bonding with metal atoms, providing localized protection exactly where needed without requiring uniform distribution throughout the entire film, thus maintaining overall film integrity.
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 ACF effectively prevents or minimizes corrosion of the display panel, thereby reducing screen defects in display devices without degrading the adhesion and mechanical properties of the film.
Implementation Method 1
forms chemical bonds with the metal surface of the display panel
Implementation Method 2
blocking electrolyte ions and preventing corrosion
Data Source
AI summary
An anisotropic conductive film containing a compound represented by Chemical Formula 1: in Chemical Formula 1, R is any one of a halogen element, a hydroxy group, a substituted or unsubstituted imine group, a substituted or unsubstituted silyl group, a substituted or unsubstituted C1 to C10 oxy group, a substituted or unsubstituted carbonyl group, a substituted or unsubstituted C2 to C10 alkenyl group, and a substituted or unsubstituted C2 to C10 alkynyl group.