Phase Separating Glass Composition for Anti-Reflective Laminate
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Solution Overview
Problem
Conventional anti-reflective (AR) glass technologies, such as coatings and etch patterning, face challenges with high costs and time requirements, and difficulty in control, necessitating the development of alternative glass compositions with improved AR properties.
Innovation Solution
A glass composition comprising specific mole percentages of SiO2, Al2O3, B2O3, R2O, MgO, CaO, and SrO, which undergo phase separation to form a porous, interconnected matrix, reducing reflection through refractive index manipulation and porosity optimization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional AR coatings are applied to glass surfaces, then reflection is reduced, but cost and processing time increase
Solution Approach 1:
The patent modifies the bulk glass composition parameters (adding specific oxide components) to enable inherent anti-reflective properties through phase separation, eliminating the need for separate AR coating processing steps and reducing overall processing time
Solution Approach 2:
The invention creates a composite glass structure through phase separation, forming a porous network within the glass matrix that provides anti-reflective properties, combining multiple functional characteristics in a single material system
2Object-affected harmful factors
If conventional AR coatings are applied to glass surfaces, then reflection is reduced, but manufacturing cost increases
Solution Approach 1:
The glass composition itself provides the anti-reflective function through its inherent phase separation behavior during manufacturing, eliminating the need for separate AR coating applications and reducing manufacturing complexity and cost
Solution Approach 2:
By adjusting the chemical composition parameters of the glass melt, the invention enables self-organizing phase separation that creates anti-reflective properties without requiring additional manufacturing steps or specialized equipment
3Object-affected harmful factors
If conventional AR coatings are applied to glass surfaces, then reflection is reduced, but control difficulty increases
Solution Approach 1:
The phase separation process occurs spontaneously based on the glass composition and cooling history, providing inherent control mechanisms that eliminate the need for precise manual control of multiple coating layers and their interfaces
4Object-affected harmful factors
If phase separation is induced in glass cladding layer, then anti-reflective properties are achieved, but processing temperature increases
Solution Approach 1:
The invention modifies the glass composition by adding specific oxide components that lower the phase separation temperature, enabling anti-reflective property formation at reduced processing temperatures compared to conventional approaches
Data Source
AI summary
A glass composition includes from 50 mol % to 80 mol % SiO2; from 5 mol % to 15 mol % Al2O3; from 10 mol % to 25 mol % B2O3; greater than or equal to 0 mol % Li2O; greater than or equal to 0 mol % Na2O; greater than or equal to 0 mol % K2O; greater than or equal to 0 mol % Rb2O; greater than or equal to 0 mol % Cs2O; from 1.5 mol % to 5 mol % MgO; from 4 mol % to 12 mol % CaO; and from 0.5 mol % to 5 mol % SrO. R2O is from 0.1 mol % to 15 mol %, R2O being the sum of Li2O, Na2O, K2O, Rb2O, and Cs2O.