Optical Film Surface Morphology for Anti-Glare and Scratch Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional optical films with larger depressions and projections suffer from reduced scratch resistance and jet-black appearance due to reflected scattered light.
Innovation Solution
Optical films with specific surface characteristics: peak material volume (Vmp) of 0.010 ml/m2 to 0.050 ml/m2 and minimum autocorrelation length (Sal) of 4.0 μm to 12.0 μm, enhancing anti-glare properties and scratch resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If larger depressions and projections are formed on the surface of the optical film to improve anti-glare properties, then anti-glare properties are enhanced, but scratch resistance is reduced
Solution Approach 1:
The patent applies parameter changes by precisely controlling the peak material volume (Vmp) within 0.010-0.050 ml/m2 and minimum autocorrelation length (Sal) within 4.0-12.0 μm. This quantitative optimization resolves the contradiction by finding the optimal parameter range that provides sufficient anti-glare properties while maintaining scratch resistance, rather than using arbitrarily large depressions and projections.
Solution Approach 2:
The patent introduces dynamic control of surface morphology parameters, where the depression and projection characteristics are optimized within specific ranges rather than being fixed. This allows the optical film to achieve high anti-glare properties through controlled light scattering while maintaining structural integrity for scratch resistance.
2Object-affected harmful factors
If larger depressions and projections are formed on the surface of the optical film to improve anti-glare properties, then anti-glare properties are enhanced, but jet-black appearance is reduced due to reflected scattered light
Solution Approach 1:
The patent resolves this contradiction by optimizing the Vmp and Sal parameters within specific ranges. The controlled peak material volume (0.010-0.050 ml/m2) and minimum autocorrelation length (4.0-12.0 μm) create an optimal surface morphology that scatters glare effectively while minimizing reflected scattered light that would compromise the jet-black appearance of black display portions.
Solution Approach 2:
The patent applies partial action by using moderate depression and projection sizes rather than maximizing them. The optimized parameter ranges provide sufficient anti-glare functionality without excessive surface roughness that would cause harmful reflected scattered light, thus maintaining both anti-glare properties and jet-black appearance.
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 optical films effectively suppress reflected scattered light, maintaining jet-black appearance and providing favorable scratch resistance.
Implementation Method 1
an optical film having a surface with depressions and projections may be disposed on their surfaces to suppress reflections of backgrounds such as lighting and people
Data Source
AI summary
Provided is an optical film which has high anti-glare properties, enables a suppress of a reduction in jet-black appearance by reflected scattered light, and has favorable scratch resistance. An optical film having a surface with depressions and projections, wherein the surface with depressions and projections has a peak material volume Vmp of 0.010 ml/m2 or more and 0.050 ml/m2 or less specified in ISO 25178-2:2012, and a minimum autocorrelation length Sal of 4.0 μm or more and 12.0 μm or less specified in ISO 25178-2:2012.