Translucent Structure with Multi-Scale Convex Portions for Low Haze
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing antiglare treatments for image display devices often result in high haze factors and sparkle issues, which degrade image visibility and resolution, especially with increasing pixel density.
Innovation Solution
A translucent structure with a specific uneven surface topology, featuring first convex portions with diameters between 1 μm and 16 μm and second convex portions with diameters of at least 0.4 μm, optimized through image processing to achieve low haze and sparkle, is applied to the display surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If antiglare treatment is applied on the surface of a substrate, then external light reflection is suppressed, but the haze factor increases and image visibility is reduced
Solution Approach 1:
The patent applies local quality by creating a non-uniform surface structure with specifically controlled convex portions of varying sizes (0.1-10 μm). The surface is not uniformly roughened but rather features localized convex structures with specific size distributions, where smaller convex portions (0.1-1 μm) and larger convex portions (1-10 μm) coexist to achieve both antiglare and low haze properties simultaneously.
Solution Approach 2:
The patent employs parameter changes by precisely controlling the size distribution, density, and height of convex portions on the surface. By adjusting parameters such as convex portion diameter (0.1-10 μm), density (0.01-10 portions/μm²), and height (0.1-5 μm), the patent achieves optimal balance between antiglare performance and haze reduction, unlike conventional uniform roughening methods.
2Object-affected harmful factors
If antiglare treatment with high unevenness is applied, then antiglare properties are enhanced, but sparkle occurs and image visibility decreases
Solution Approach 1:
The patent applies segmentation by dividing the surface into multiple types of convex portions (smaller convex portions of 0.1-1 μm and larger convex portions of 1-10 μm) with different size ranges. This segmented approach to surface structuring allows each size category to contribute differently to light scattering, suppressing both glare and sparkle through multi-scale diffusion rather than uniform roughening.
Solution Approach 2:
The patent employs composite material principles by combining convex portions of different size ranges (0.1-1 μm and 1-10 μm) within the same surface layer. This composite structure creates multi-scale light scattering centers that work together to suppress both glare and sparkle, achieving superior optical performance compared to single-scale roughening.
3Measurement precision
If pixel density of display increases, then image resolution is improved, but sparkle becomes stronger even with same uneven structure
Solution Approach 1:
The patent applies parameter changes by optimizing the size distribution of convex portions to match the pixel density of modern displays. With increasing pixel density, the patent adjusts the density and size parameters of convex portions (particularly the 0.1-1 μm range) to prevent sparkle while maintaining the fine resolution needed for high-density pixels, ensuring compatibility across different display generations.
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 diffuses external light to reduce glare while minimizing sparkle, thereby enhancing image clarity and transmittance without compromising visibility.
Implementation Method 1
Antiglare treatment is treatment of forming unevenness on the surface, to let incident light be scattered by such unevenness. As incident light is diffusely reflected, the reflected image becomes blurred, whereby the external light reflection is suppressed.
Data Source
AI summary
To provide a translucent structure having a low haze factor and low sparkle. The translucent structure has an uneven structure at the surface thereof, wherein the uneven structure includes first convex portions 5a, of which the diameters at a height of the bearing height+0.05 μm of the surface shape (a), obtainable by measuring the uneven structure by a laser microscope, are at least 1 μm, and in an image (c) in which a plurality of convex portions are scattered, obtained by filtering the surface shape (a) by image processing software to obtain a smoothing image (b), and subtracting XYZ data of the smoothing image (b) from XYZ data of the surface shape (a), said plurality of convex portions include second convex portions 5b, of which the diameters at a height of 0.01 μm when the bearing height is deemed to be 0, are at least 0.4 μm, the density of the second convex portions is from 0.023 to 7.210 units/μm2, and the proportion of the total area in cross-section at a height of 0.01 μm of the second convex portions 5b is from 0.900 to 90.000%.