Glass Article Surface Etching for Strength and Optical Clarity
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Solution Overview
Problem
Glass articles used in electronic devices and construction materials often require high strength and thinness to withstand external impacts, but existing methods do not effectively address the need for improved durability and optical characteristics.
Innovation Solution
A method involving ion exchange processes to introduce compressive stress in glass surfaces, followed by etching or polishing to remove a low-refractive surface layer, resulting in a stress profile that enhances strength and reduces surface defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a low-refractive surface layer is formed on glass bulk to improve optical characteristics, then optical clarity is improved, but surface defects and reduced strength occur
Solution Approach 1:
The patent removes the low-refractive surface layer through etching or polishing processes to eliminate surface defects while preserving the beneficial optical characteristics through controlled surface treatment. This extraction of the problematic surface layer resolves the contradiction between optical clarity and surface strength.
Solution Approach 2:
The patent applies chemical etching and mechanical polishing processes that change the physical and chemical parameters of the glass surface. By controlling the depth and characteristics of these surface modifications, the patent achieves both optical clarity and enhanced surface strength simultaneously.
2Length of moving object
If glass is made thin to improve portability, then ease of carrying is improved, but resistance to external impact deteriorates
Solution Approach 1:
The patent applies compressive stress to the glass surface through ion exchange processes before the glass is put into service. This preliminary strengthening action creates a protective compressive layer that prevents crack initiation and propagation, enabling thin glass to resist external impacts effectively.
Solution Approach 2:
The patent modifies the stress distribution parameters within the glass by controlling ion exchange depth and concentration. This creates optimized stress profiles that enhance impact resistance in thin glass articles without increasing thickness.
3Strength
If ion exchange process is applied to introduce compressive stress, then strength is improved, but surface layer formation with different refractive index occurs
Solution Approach 1:
The patent removes the ion-exchanged surface layer that creates refractive index variations through controlled etching or polishing. This extraction eliminates the optical defect while preserving the beneficial compressive stress in the bulk glass, resolving the contradiction between strength improvement and refractive index uniformity.
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 method produces glass articles with improved strength and durability, maintaining optical clarity and reducing the risk of breakage from external impacts.
Implementation Method 1
A method involving ion exchange processes to introduce compressive stress in glass surfaces
Implementation Method 2
etching away the low-refractive surface layer to form an etched glass
Implementation Method 3
polishing a surface of the glass to form a polished glass
Data Source
AI summary
A method for producing a glass article is provided. The method for producing a glass article, the method including preparing a glass to be processed, the glass comprising a glass bulk and a low-refractive surface layer disposed on the glass bulk, and etching away the low-refractive surface layer to form an etched glass, wherein the etching away the low-refractive surface layer comprises: cleaning the low-refractive surface layer with an acid solution; and cleaning the low-refractive surface layer with a base solution after the cleaning it with the acid solution.