Antistatic Coating Composition for Display Panels
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Solution Overview
Problem
Display panels and liquid crystal display devices face issues with charging phenomena leading to malfunction and image quality deterioration due to dust attachment and scratches, and existing antistatic coatings cause whitening and lack abrasion resistance.
Innovation Solution
A coating composition comprising a polyoxometalate anion, such as those with molybdenum or tungsten, and a radically polymerizable cation, which forms a film with excellent haze characteristics and abrasion resistance, preventing salt bleeding and whitening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an antistatic layer is formed using a conductive salt containing antistatic composition, then antistatic performance is improved, but whitening phenomenon occurs due to salt bleed out from moisture in the air
Solution Approach 1:
The patent introduces a polymer as an intermediary substance that encapsulates the conductive salt particles. This polymer matrix acts as a mediator between the salt and the external environment, preventing moisture from reaching the salt and causing bleed-out, while still allowing the salt to function as an antistatic agent. The polymer coating on salt particles creates a protective interface that maintains antistatic performance without the whitening side effect.
Solution Approach 2:
The invention creates a composite material system combining conductive salt particles with polymer coating in a specific formulation. This composite structure integrates the electrical conductivity of the salt with the moisture barrier properties of the polymer, achieving both antistatic functionality and resistance to whitening phenomenon simultaneously.
2Reliability
If an antistatic layer is formed to prevent charging phenomenon, then antistatic performance is improved, but abrasion resistance deteriorates
Solution Approach 1:
The patent merges the antistatic salt particles with the polymer coating into a unified composite structure that is then integrated into the coating composition. This combination allows the salt particles to provide antistatic function while the polymer matrix provides structural integrity and abrasion resistance, making the overall coating more durable without sacrificing antistatic performance.
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 solution provides a film with excellent antistatic properties, abrasion resistance, and moisture-heat resistance, preventing dust adhesion and image quality deterioration while maintaining transparency and surface resistance.
Implementation Method 1
a salt having a polyoxometalate anion and a radically polymerizable cation
Data Source
AI summary
The coating composition of the present application has excellent antistatic properties and thus can be used as an antistatic hard coating film. The coating composition of the present application may comprise a salt based on a polyoxometalate anion and a radically polymerizable cation, and a radically polymerizable binder to form an antistatic hard coating film having excellent antistatic property, abrasion resistance and moist-heat resistance. Such a film can be used for an optical laminate and a display device, and the like.