Surface Coating Material for Touch Screen Durability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional surface coating materials for touch screens, such as those using siloxane compounds, exhibit weak durability and compromised fingerprint resistance, while alternatives like perfluoropolyethersilane compounds improve durability but worsen fingerprint resistance.
Innovation Solution
A surface coating material comprising a ternary copolymer with a specific molecular weight range and a hydrolyzable silane moiety, which reduces friction and enhances durability while maintaining excellent fingerprint resistance, is developed. This copolymer includes alkylene, polyoxyalkylene, and alkylene groups, providing a brush effect that improves substrate coating durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If siloxane compounds are used as surface coating material, then fingerprint resistance is improved, but durability is worsened
Solution Approach 1:
The patent uses a composite material consisting of a siloxane compound and a polyoxyalkylene compound in a specific weight ratio (3:97 to 7:93). This combination allows the siloxane component to provide fingerprint resistance while the polyoxyalkylene component enhances durability and reduces friction, thereby resolving the contradiction between fingerprint resistance and durability.
Solution Approach 2:
The patent optimizes the weight ratio parameters of the siloxane compound and polyoxyalkylene compound, and controls the friction coefficient within a specific range (0.35-0.65). By adjusting these parameters, the coating achieves both good fingerprint resistance and improved durability, resolving the trade-off between these two properties.
2Duration of action of stationary object
If perfluoropolyethersilane compounds are used as surface coating material, then durability is improved, but fingerprint resistance is worsened
Solution Approach 1:
Instead of using perfluoropolyethersilane alone, the patent combines siloxane compound with polyoxyalkylene compound. This composite approach maintains the durability benefits while restoring fingerprint resistance, as the siloxane component specifically contributes to fingerprint resistance properties.
Solution Approach 2:
The patent assigns different functional properties to different components: the siloxane compound provides fingerprint resistance, while the polyoxyalkylene compound provides durability and friction reduction. This functional differentiation allows simultaneous achievement of both fingerprint resistance and durability.
3Ease of operation
If functional layer is applied to improve surface slipping property and sense of touch, then ease of operation is improved, but durability is worsened due to weak durability and easy loss
Solution Approach 1:
The patent uses a composite coating of siloxane and polyoxyalkylene compounds that provides both surface slipping properties (ease of operation) and enhanced durability. The combination ensures the coating withstands frequent contact while maintaining touch sensitivity and slipping characteristics.
Solution Approach 2:
By controlling the friction coefficient within the range of 0.35-0.65 and optimizing the weight ratio of components, the patent achieves surface slipping properties for ease of operation while simultaneously ensuring durability against frequent contact and damage.
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 surface coating material achieves remarkable durability and fingerprint resistance, with a friction coefficient reduction and contact angles suitable for both water and oil, ensuring a long-lasting and effective touch screen surface.
Implementation Method 1
The friction coefficient of the functional layer may be reduced and thus durability of may be improved
Implementation Method 2
a surface coating material comprising a ternary copolymer with a specific molecular weight range and a hydrolyzable silane moiety
Data Source
AI summary
Disclosed are a surface coating material including a compound represented by Chemical Formula 1, a film, a stacked structure, a display device, and an article including a glass substrate coated with the surface coating material.In Chemical Formula 1, each substituent is the same as defined in the detailed description.