Antiglare Surface Structure for Display Reflection Control
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Solution Overview
Problem
Current antiglare surfaces for display devices do not adequately reduce background reflection, which affects visual clarity and image recognition.
Innovation Solution
An antiglare surface with specific surface shape characteristics, including an average arithmetic mean height of 20 nm or greater and a variation coefficient of 0.020 or greater when measured in certain dimensions, combined with a glass base material and an antiglare layer formed from oxides like SiO2, Al2O3, ZrO2, and TiO2, to scatter light and reduce interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional antiglare surface is used, then sparkle is reduced, but background reflection is not adequately reduced
Solution Approach 1:
The patent applies parameter changes by precisely controlling surface roughness parameters (Sa average value and CV variation coefficient) to resolve the contradiction. By setting Sa ≥ 20 nm and CV ≥ 0.020, the invention achieves effective background reflection reduction while maintaining manufacturability. This quantitative parameter control transforms the vague concept of 'antiglare surface' into a precisely defined surface structure that optimally balances glare reduction with manufacturing feasibility.
Solution Approach 2:
The patent applies local quality by differentiating surface characteristics at different measurement scales. The dual-parameter system (Sa for overall roughness, CV for local variation) enables different parts of the surface to have optimized properties: sufficient roughness for glare reduction while maintaining local uniformity for manufacturing control. This local differentiation resolves the contradiction between achieving strong antiglare effect and maintaining manufacturing precision.
2Object-affected harmful factors
If surface roughness is increased to reduce background reflection, then antiglare performance improves, but image resolution may be compromised
Solution Approach 1:
The patent applies parameter changes by optimizing the Sa value to ≥ 20 nm, which is sufficient to scatter background reflection effectively but controlled enough to preserve image resolution. This precise parameter setting resolves the contradiction by finding the optimal threshold where antiglare performance improves without compromising the clarity and resolution of displayed images.
Solution Approach 2:
The patent applies partial action by implementing just enough surface roughness (Sa ≥ 20 nm) to achieve the required antiglare effect without excessive roughness that would degrade image resolution. This controlled, partial application of roughness resolves the contradiction by providing sufficient glare reduction while maintaining image quality.
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 effectively reduces background reflection and improves antiglare performance without compromising image resolution, making it suitable for use in display devices.
Implementation Method 1
An antiglare surface with specific surface shape characteristics, including an average arithmetic mean height of 20 nm or greater and a variation coefficient of 0.020 or greater when measured in certain dimensions, combined with a glass base material and an antiglare layer formed from oxides like SiO2, Al2O3, ZrO2, and TiO2, to scatter light and reduce interference.
Data Source
AI summary
Disclosed is an article that includes an antiglare surface. When measuring surface shapes of six adjacent areas obtained by dividing the antiglare surface into dimensions of 103 μm×118 μm, the antiglare surface includes a surface shape such that an average value of an arithmetic mean height Sa of the six areas is 20 nm or greater and a variation coefficient CV1, which is obtained from the average value and a standard deviation of the arithmetic mean height Sa of the six areas, is 0.020 or greater.