Antibacterial Flexible Cover Window with Nanoparticle Resin Coating

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Solution Overview

Problem

Existing antibacterial films on surfaces, including cover windows, suffer from peeling issues and decreased antibacterial performance over time, failing to provide long-lasting protection against bacteria and viruses, especially on frequently touched devices like smartphones.

Innovation Solution

A flexible cover window with an antibacterial layer formed on a glass substrate using a resin coating solution containing dispersed antibacterial nanoparticles, such as silver, platinum, or titanium dioxide, which provides a durable and long-lasting antibacterial effect while maintaining strength and folding characteristics.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If an antibacterial film is coated on the surface of a product, then antibacterial properties are provided, but the film plays a role of protecting the surface of the product to some extent and the film itself is gradually damaged over time causing the antibacterial performance to gradually decrease

Engineering Contradiction:

Improveantibacterial performanceVSAvoidservice life of antibacterial film

Core Design Contradiction:

ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The patent combines the antibacterial function and protective function into a single integrated layer. The antibacterial coating layer is formed directly on the glass substrate through coating and drying processes, creating a unified structure that simultaneously provides antibacterial protection and surface protection, eliminating the need for separate protective films that would otherwise peel or degrade independently

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The antibacterial coating layer uses composite material composition including resin components (such as polyurethane, acrylic, or epoxy resins) combined with antibacterial agents (silver nanoparticles, copper nanoparticles, or other antibacterial materials). This composite structure provides both the protective characteristics of the resin matrix and the antibacterial properties of the embedded particles, ensuring long-lasting dual functionality

Inventive Principle:

Principle #40Composite materials

2Reliability

If silver or copper nanoparticles are coated on products, then antibacterial properties are achieved, but the nanoparticles easily peel off with time and cannot perform antibacterial property after a certain period

Engineering Contradiction:

Improveantibacterial propertyVSAvoidadhesion of nanoparticles

Core Design Contradiction:

ReliabilityVSStability of the object's composition

Solution Approach 1:

The patent employs composite materials where antibacterial nanoparticles (silver or copper) are dispersed within a resin matrix. The resin component provides adhesion and structural integrity, preventing nanoparticle peeling, while the nanoparticles maintain their antibacterial functionality. This composite approach solves the adhesion problem of pure nanoparticle coatings

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The resin coating acts as an intermediary between the substrate and the antibacterial nanoparticles. It provides a bonding interface that secures the nanoparticles to the surface, preventing peeling while allowing the nanoparticles to maintain their antibacterial activity. The resin mediates between the mechanical requirements of adhesion and the functional requirements of antibacterial performance

Inventive Principle:

Principle #24Intermediary (Mediator)

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 antibacterial layer on the flexible cover window exhibits excellent antibacterial properties, strength, and folding characteristics, effectively protecting the underlying display panel and maintaining performance over time, even when subjected to frequent use and folding.

Implementation Method 1

an antibacterial layer formed on a front surface of the glass substrate by coating the front surface of the glass substrate with an antibacterial coating composition containing 0.001 to 0.5 parts by weight of antibacterial nanoparticles dispersed in 100 parts by weight of a resin coating solution

Methodology Applied

Scientific EffectAntibacterial property:

Data Source

PatentUS11957130B2Antibacterial flexible cover window

Publication Date: 2024.04.16 UTI INC

AI summary

Disclosed is an antibacterial flexible cover window formed using an antibacterial coating composition containing antibacterial nanoparticles dispersed in a resin coating solution. In the antibacterial coating composition, 0.001 to 0.5 parts by weight of the antibacterial nanoparticles are dispersed in 100 parts by weight of the resin coating solution. The antibacterial flexible cover window includes an antibacterial layer that is formed by applying the antibacterial coating composition to a glass substrate. Therefore, the antibacterial flexible cover window exhibits a good and long-lasting antibacterial activity.