By controlling alkali metal content it lowers the risk of ion migration, making it suitable for display backplanes, sensors, thin-film electronics and cleanliness-sensitive precision substrates.
Alkali-free glass is a material category rather than a single grade; alkali content, strain point, dielectric, optical and supply specifications must be confirmed against the actual material data sheet.
Suited to electronic processes that are sensitive to alkali metal contamination, thin-film stability and electrical performance.
Some alkali-free systems have a higher strain point, making them suitable for thin-film deposition and thermal process evaluation.
We can evaluate cutting, dicing, lapping and polishing, cleaning, inspection and clean packaging.
Alkali-free glass is typically used for displays, sensing, thin-film devices and microelectronic substrates. Its value lies in controlled alkali metal composition, thermal stability, surface quality and dimensional consistency. Different alkali-free systems do not share the same composition or performance.
Projects should specify process temperature, thin-film or electrode material, dimensions and thickness, TTV, warpage, roughness, particles and ionic contamination requirements. We assess processing and clean delivery against the actual supplied material and the drawing.
| Material type | Low-alkali or alkali-free electronic-grade glass; exact composition and supplied grade to be confirmed |
|---|---|
| Total alkali content | Confirmed against the actual material data sheet and project limits |
| Density / elastic modulus | Varies with the material system; to be confirmed once the supplied grade is fixed |
| Coefficient of thermal expansion (CTE) | Confirmed against the actual material and the specified temperature range |
| Strain point / annealing point / softening point | Varies with the material system; to be confirmed |
| Dielectric constant / loss | Confirmed against frequency, temperature and the supplied material data sheet |
| Refractive index / optical transmission | Confirmed against the target wavelength, thickness and surface state |
| Thickness variation / TTV / warpage | Confirmed against dimensions, thickness, processing state and measurement method |
Supply form, dimensions, thickness and surface state are confirmed according to material source, stock and process requirements.
Specific grade, batch, alkali content and material certification confirmed per project
Outline, thickness, TTV, warpage, hole positions and edges confirmed against the drawing
Surface roughness, appearance, particles, ions, cleaning and packaging confirmed against the process
Formal supply is governed by material documents, drawings, sample validation and specifications confirmed by both parties.
The process route focuses on thin-sheet breakage, edge micro-chipping, TTV, warpage, surface contact and clean packaging.
Precision glass processing services. Precision glass grinding. For borosilicate glass, aluminosilicate glass, …
View Processing
We plan the glass cutting route around dimensions, datums, edge condition and downstream operations, reviewing outline, cutting allowance and delivery requirements against the drawing.
View Processing
Grinding and polishing operations are arranged around thickness, parallelism, flatness and surface requirements, with the process route and inspection method confirmed per project.
View Processing
We control particles, residues and water marks after processing, and confirm cleaning, handling and packaging requirements against coating, bonding or assembly needs.
View Processing
Glass dimensions, edges and surfaces are inspected against the drawing and the agreed acceptance items, with inspection methods, sampling scope and delivery records defined.
View Processing
We address sharp edges and local edge defects after cutting, confirming edge grinding and chamfer styles and edge acceptance criteria against assembly requirements.
View Processing
For micro-holes, hole arrays and local openings in glass, we evaluate laser drilling options based on material, thickness and hole geometry.
View ProcessingThe specific material choice must be confirmed against process temperature, alkali contamination, thermal matching, optical and electrical performance and downstream processes.
"Alkali-free" usually means alkali metal content is strictly controlled rather than absolutely zero; the exact content is governed by the data sheet of the chosen material.
This page covers an unbranded material category. Once a specific grade is fixed, we will state its origin and data in the quotation or specification document.
Thin-film deposition or heat treatment can cause deformation, shrinkage or stress changes in the glass, so the thermal parameters of the specific material must be matched.
We can evaluate this; capability depends on dimensions, thickness, process route, measurement method and cleanliness requirements.
Please provide process temperature, dimensions, thickness, quantity, TTV, warpage, surface, particle or ionic limits and packaging requirements.
Based on the actual material and downstream process, we assess cutting, lapping and polishing, cleaning, inspection and packaging as one set.