Antiglare Surface Cycle Length Control for Display Clarity
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Solution Overview
Problem
Existing antiglare surfaces with fine uneven structures often compromise the antiglare effect in pursuit of reducing sparkle, leading to a trade-off between the two desired outcomes.
Innovation Solution
A transparent article with an antiglare surface featuring an uneven structure characterized by a cycle length of 6 to 20 μm, as determined by the autocorrelation function, and a gradient angle distribution where 5° or greater angles account for 45% or less, applied on high-resolution display devices with pixel densities of 420 ppi or greater.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the uneven structure of the antiglare surface is made finer to reduce sparkle, then the anti-sparkle effect is improved, but the antiglare effect is greatly lowered
Solution Approach 1:
The patent applies parameter changes by precisely controlling the cycle length of the uneven structure within 6 to 20 μm and limiting the gradient angle distribution to 45% or less at 5° or greater. This optimized parameter range simultaneously achieves both antiglare and anti-sparkle effects, resolving the contradiction between reducing sparkle and maintaining antiglare performance.
Solution Approach 2:
The patent employs partial action by selectively controlling only the critical parameters (cycle length and gradient angle distribution) rather than uniformly refining the entire surface structure. This targeted approach maintains sufficient antiglare effect while achieving the desired anti-sparkle performance.
2Object-affected harmful factors
If the cycle length of the uneven structure is reduced to minimize sparkle, then the anti-sparkle effect is improved, but the antiglare effect deteriorates
Solution Approach 1:
The patent resolves this contradiction by establishing an optimal parameter range for cycle length (6 to 20 μm). This specific range is derived from autocorrelation function analysis and gradient angle distribution control, ensuring that the surface structure is fine enough to reduce sparkle while coarse enough to maintain effective light scattering for antiglare 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
This configuration effectively achieves both antiglare and anti-sparkle effects while maintaining clarity and reducing sparkle, enhancing visual recognition and contrast in bright environments.
Implementation Method 1
a cycle length obtained from an autocorrelation function is 6 to 20 μm
Implementation Method 2
The antiglare effect of the antiglare surface is obtained by an uneven structure of the antiglare surface
Implementation Method 3
a ratio of where a gradient angle formed by a normal line to the antiglare surface and a normal line to a fine flat plane of the antiglare surface is 5° or greater in a gradient angle distribution is 45% or less
Data Source
AI summary
In order to achieve both an anti-glare effect and a sparkle-suppressing effect in a transparent article having an anti-glare surface having a recess and protrusion structure, the transparent article has an anti-glare surface having a recess and protrusion structure. The recess and protrusion structure of the anti-glare surface has a 6-20 μm cycle length obtained from the autocorrelation function.