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Ultra-Thin Glass Manufacturer Custom Display & Cover Glass
Thinnest precision processed ultra-thin glass from 0.1 mm. Chemical strengthening, optical coating, CNC machining for display, automotive, medical, industrial needs.
What Is Ultra-Thin Glass?
Ultra-thin glass represents a sub-set of flat glass which is 1.1 mm thick or less. Commercial substrates tend to be in the 0.1-0.7 mm range, approaching the thickness of a human hair in the very thinnest products. Highly specialized sheets can be as thin as 0.03 mm. However thin, the ultra-thin glass substrates tend to have all the qualities that make glass indispensable in electronics, optics and the most demanding engineering environments.
01
Evolution
Commercial recognition came as electrical device manufacturers moved away from drop-tested panels towards bendable displays. Corning and SCHOTT fielded bendable — and then foldable – glass substrates. Corning’s Willow Glass measured just 0.1 mm thick, and could simply be wound up for transport, then cut to size on site. SCHOTT’s ultra-thin flexible glass pushed the boundaries towards 0.1 mm. These advancements demonstrated that glass could be flexible and able to handle tight bending radii when manufactured at the right thickness and processed with suitable chemical or thermal strength.
02
Process Benefits
Apart from the obvious weight savings over the traditional 3mm flat, Ultra-thin glass offers practical process benefits for B2B customers. Weight saving of 40-60% of that for 3mm design. Lower electromagnetic interference, important for sensor activity, particularly in dense applications. And no degradation over time like yellowing or plastic film cracking when exposed to ultraviolet light — this is an inert, safe long-term cover for highly valuable equipment that has to operate for as long as fifty years in some cases.
03
Applications
End use application determines choice of thickness – 0.3-0.7mm range of cover glass used in handheld displays, 0.5-1.1mm for impact tolerant automotive instrument displays or 0.1-0.5 mm optical windows for sensors. SW Glass cuts across this entire spectrum, processing the ultra thin glass to fit each individual project.
Ultra-Thin Glass Types & Materials
Not all Ultra-thin Glass is structurally equivalent. Base composition, including the level of aluminosilicate content, controls how the sheet responds to thermal and chemical stress, and the need for bending. Choosing the appropriate raw material on which to build is the first step in any ultra-thin glass project.
Aluminosilicate Glass
This Ultra-thin glass is suitable for applications where a high level of chemical strengthening due to the deep Na+ to K+ ion exchange is required. Deep ion exchange produces a thick layer of compressive stress which makes the glass highly impact and scratch resistant. As a result Corning's Gorilla Glass is probably the most commonly known ultra-thin glass in the world. We are an authorized processor — CNC cut, edge grind, chemical toughen - for select OEM customers.
Borosilicate Glass
Low coefficient of expansion means borosilicate handles sudden temperature variation without stress cracking. Medical, laboratory and high-temperature sensors require borosilicate substrates. As an ultra-thin sheet, borosilicate 0.1-0.5mm performs admirably as a window for sensors which depend on high temperature tolerance and optical transmittance.
Soda-Lime Glass
Soda-lime remains a cost-effective material for uses where extensive scratch resistance or thermal stability aren’t necessary. Ultra-thin tempered soda-lime performs well as a smart home display, wide-angle cover, or general use protective barrier. Chemically strengthened soda-lime substrates result in moderate surface compression - stable for touch screens and decorative panels in the absence of excessive light, heat or moisture, at a smaller per-piece cost of material.
Flexible & Foldable Glass
At thicknesses less than 0.2 mm aluminosilicate and borosilicate glass become physically bendy. Foldable glass - as employed in Samsung Galaxy Z foldable phones and other bendable gadgets - flexes to radii of less than 5 mm without breaking - not a polymer substitute; proper glass with all the properties of traditional glass, but also capable of repeated folding and unfolding. This is the leading technology in ultra-thin glass.
Engineering Insight
Every glass technology comes with compromises: aluminosilicate (constructed largely upon a silicon- and aluminum-oxide matrix) provides the best scratch resistance (at a slightly higher cost per m2); borosilicate handles thermal excursions, although harder to achieve equivalent strengthening levels; soda lime is more affordable, but cannot achieve bend radii aluminosilicate can. We help our OEM clients know which material grade best suits each application during the quoting process: high-end specs don’t always make sense if you’re budget-conscious.
How Ultra-Thin Glass Is Made
Producing glass so thin requires significantly tighter process controls than standard flat architectural material: each step of forming, cutting, and inspecting has narrower tolerances to ensure we hit our targets every run.
01
Glass Forming
The fusion draw process relies on a pristine surface that doesn’t require grinding; molten glass is drawn from 2 sides of the isopipe, fused at the bottom, producing a substrate suitable for transparent optical applications straight off the line.
02
CNC Machining
Diamond-tipped CNC equipment cut, drill, profile, and score ultra-thin glass panels for OEM customers. For substrates below 0.5 mm in thickness, coolant and feed rate must be carefully balanced to avoid edge chips — we’ve learned how to do so through daily repetition.
03
Chemical Strengthening
Ion exchange immerses the glass in a molten potassium salt bath, replacing small sodium ions with larger potassium ions and endowing the surface with very high levels of compressive stress (CS) — values well exceeding 450 MPa, with a depth of layer (DOL) of greater than 8 micrometers — capable of withstanding impacts that a thicker, heavier piece of glass could never survive.
04
Surface Treatment
Additional coatings on top of the strengthened glass — ambient light reduction (AR), fingerprint resistance (AF), glare reduction (AG), and conductive (ITO) — carried out by vacuum depositors or screen printers depending on the coating and substrate size.
Why does the manufacturing process matter?
Every step introduces new variables that impact the quality of the final product. A batch of uneven thickness glass will produce mismatched stress points during chemical strengthening that will cause warping or broken modules before end use in the field. All of that glass is run through inline thickness measurement at the forming stage, and every finished panel is subjected to a salt bath compression test, and any out-of-spec finished panels are scrapped. That quality control discipline is how we deliver ultra-thin glass that delivers over production runs of 1 million+ pieces per year.
Display, Automotive & Industrial Applications
The applications for ultra-thin glass that we provide are varied; transparency, durability, and weight all come into play depending on the industry.
Display Cover Glass
Cell phone displays, electronics touchscreens, and flexible displays all use ultra-thin chemically strengthened glass as the impact and scratch resistant primary display surface. Between 0.3mm and 0.55mm, glass provides excellent surface hardness with minimal impact on the overall device size and weight. Foldable smartphone displays - like the Z series from Samsung - require a glass substrate that is flexible enough to repeatedly fold at sub-5mm radius.
Automotive Displays
Automotive domes, instrument clusters, and head-up display (HUD) elements use ultra-thin, chemically strengthened glass as a durable optical material. Built to withstand thermal cycling and vibration in the -40~85C range specified by ISO 16750, aluminosilicate is the best choice for the harsh automotive environment.
Industrial HMI Touchscreens
Automation factory floor panel controls in the petrochemical industry require impact, chemical, and temperature cycling resistance; processors, operators, and robots make contact with every surface in the full control cycle. Cover glass with positively charged AG film substrate improves viewability under high-bay lighting, and chemically strengthened glass withstands submersion cleaning in alcohol and peroxide for years of smooth operation.
Medical Device Displays
User interfaces, sensors, infusion pump monitors all have patient contact and require biocompatible surface treatments. Medical applications demand the optical clarity and functional cleanliness of glass far more than of polymer materials; gentle repeated cleaning with alcohol and peroxide-based substances leaves a minimum amount of wear.
Sensor Windows & Optical Modules
LiDAR sensors, IR detectors, and optical modules all have thin glass windows as protective covers that deposit little signal attenuation. Between 0.1mm and 0.3mm thickness, chemically strengthened glass deposits less optical distortion than thicker protective materials, and AR coatings maximize efficiency in the target wavelengths.
Smart Home & IoT Panels
Application: Switch covers, display screens, and automation panels in the home, factory, or office all need to convey a high-tech image, but also need to be easy to clean. Thin glass with pressed indicator graphics under the surface affords an attractive and detailed control panel that will outlast its printed plastic equivalents by several years.
Custom Glass Fabrication & Coating Services
Processing a panel means painting, etching, and applying hardcoats to the surface, cutting to size, and then strengthening it to shipping quality. SW Glass handles the full sourcing, process development, and finishing of each project — all in one place.
| Capability | Specification | Notes |
|---|---|---|
| Thickness Range | 0.1 mm – 19 mm | Ultra-thin focus: 0.1 – 2.0 mm |
| Maximum Panel Size | Up to 1500 × 1000 mm | Dependent on thickness; thinner substrates have smaller max dimensions |
| Chemical Strengthening | CS > 450 MPa, DOL > 8 μm | Potassium ion exchange at 380–450°C |
| CNC Machining | Cutting, drilling, edge profiling, chamfering | 100+ automated CNC stations |
| AR Coating | Reflectance < 0.5% per surface | Multi-layer vacuum deposition |
| AF Coating | Water contact angle > 110° | Anti-fingerprint, oleophobic |
| AG Coating | Gloss: 80–120 GU adjustable | Chemical etch or spray process |
| ITO Coating | Sheet resistance: 5–300 Ω/sq | For capacitive touch and heated glass applications |
| Screen Printing | Up to 4-color, registration ±0.1 mm | Ceramic ink, UV ink, or conductive paste |
| Surface Finish | Ra < 0.5 nm (optically polished) | Fusion draw substrates; polishing available for other forming methods |
| Annual Capacity | 1,000,000+ pieces | Across 3 facilities: Dongguan, Heyuan, Henan |
Case Studies: Ultra-Thin Glass Projects
Here are examples of typical jobs we do, which each required a different combination of material choice, processing and testing. This is the reality of custom glass fabrication work.
Industrial HMI
12.1" Touchscreen Cover Glass for Factory Automation
Challenge
An automation equipment manufacturer asked for cover glass for 12.1" HMI touchscreens fitted on CNC machining centers. The glass needed to survive coolant splash, operator impacts with gloved hands, and glare from overhead lighting.
Solution
0.7 mm chemically strengthened aluminosilicate glass with AG coating (gloss curve tuned to 90 GU). Edges were CNC-edged to avoid chipping in panel assembly. Each batch was tested with 100% inline inspection of cosmetic finish using vision system.
Result
The AG coating reduced reflectivity to the degree that the display was visually accessible in 1000-lux factory light. A lower field failure rate due to glass breakage was observed in comparison to the soda-lime panels used by the OEM in its warranty history.
Automotive
Instrument Cluster Glass for a European Tier 1 Supplier
Challenge
A Tier 1 automotive OEM needed 0.55 mm curved display cover glass integrated into a grouped instrument cluster for a European car platform. The glass had to pass ISO 16750-4 thermal cycling tests and comply with PPAP classification standards.
Material
Aluminosilicate substrate, chemically strengthened to CS greater than 500 MPa. Interior AR coating minimized double-image ghosting at extreme angles of view. Dimensional control maintained to a tolerance of 0.15 mm along the curve profile.
Outcome
The finished panels withstood 1000-cycle thermal cycle (-40C to +85C) and salt spray testing without delaminating or coating degradation. The project shipped from prototype approval to volume production within 1 quarter.
Medical Device
Patient Monitor Display Glass with Biocompatible Coating
Requirements
A medical device OEM specified a 1.1 mm cover glass for a bedside patient monitor system. The surface needed to tolerate daily disinfection with hydrogen peroxide wipes (without AF coating degradation), and meet biocompatibility standards as defined by ISO 10993.
Solution
Borosilicate substrate chosen for chemical-neutrality and stability. AF coating was tested through >5000 hydrogen peroxide wipe cycles. Biocompatibility testing conducted by third-party laboratory authorized to perform such tests.
Validation
Final panels passed ISO 10993-5 (cytotoxicity) and ISO 10993-10 (skin sensitization). AF coating maintained a water contact angle above 100 after wipe-cycle test.
Quality Certifications & Testing Standards
Certification is the starting point, not the point of competitive advantage. What counts is how consistently each factory applies its quality management system at 500 units or 50,000 units. Our manufacturing facilities are certified for the following:
ISO 9001:2015
Quality Management System
EN 12150
Thermally Toughened Safety Glass
ISO 10993
Biocompatibility Testing (via accredited lab)
SEB Group
Authorized Glass Processor
IATF 16949
Automotive Quality (in progress)
In addition, we do the following tests at every step of production:
Every batch of chemically strengthened glass is measured for compressive stress, metering against target CS and delamination targets with a surface stress meter
Optical inspection — 100% automatic optical inspection for inclusions, scratches, and coating imperfections above quality threshold
Coating adhesion is confirmed with cross cut adhesion testing per ASTM D3359 standards on coating panels
Dimensional measurement - CMM measure first-article from each run, then statistically monitor process dimensions.
Type approval testing available for thermal cycling, humidity resistance testing, and UV exposure
Ultra-Thin Glass Pricing Guide
Costing is driven by a number of closely coupled parameters. Because pricing would be invalid after a few months, here is a broad breakdown of parameters affecting pricing so as to enable pricing estimates to be generated well in advance of a formal quotation request.
Material Grade
Glass type (aluminosilicate (eg Gorilla) versus soda-lime): Aluminosilicate types cost 3-4 times soda lime Glass (cost difference at same thickness based on raw material composition and licensing). Borosilicate sits in between. Material type alone can change per unit cost 30 to 60% depending on final thickness.
Thickness & Size
Thickness: Thinner glass is more costly in handling, surfacing and final processing. Yield rates follow this trend since CNC edge chipping at <0.5 mm thickness is difficult to control further reducing already poor yields. Larger panel sizes in thinner glass are more expensive per unit area - a 500 × 400mm panel at 0.3mm thickness would be considerably more expensive, closer to double, than a 100 × 80mm panel of identical unit cost (although two more panels are produced in the first case and one fewer in the latter).
Coating Stack
Coating type (single side AR or AF; multi stack AR+AF; AG+ITO on opposite sides) increases the number of deposition cycles 2-3 times accordingly thus increasing cost. Additional deposition coater cleaning parts further adds to this cost. Insertion of additional logo, text or pattern registration layers with the film incurs additional costs.
Order Volume & MOQ
Batch size/volume: minimum order quantities for standard specs are 500 pieces. When deposit tooling (eg. patterned screen print or CNC blanking tooling) is required for non-standard shapes or panel formats there is an initial one-off cost for this in addition to the finishing costs quoted. Pricing tiers (volume discounts) usually kick in at 5k and 20k pieces.
Lead times:
Our quotation turnaround time for a standard or highly specified request is generally 2-3 business days. Highly custom coated stacks (eg. additional stack deposit after initial coating run) or new panel geometries (clamped or fixture-based laser cutting for example) also require samples at 3-4 weeks before we can provide any volume quotation. Production lead time is generally 3-5 weeks after order confirmation pending materials availability and coating complexity.
Ultra-Thin Glass Cost Factor Estimator
Estimate how material, thickness, coatings, and volume affect your per-piece cost. This tool provides relative cost tiers — request a quote for exact pricing.
Project Specifications
Engineering Tools
Ultra-Thin Glass Thickness Selector
Calculate and select the optimal glass thickness specification based on your exact application and impact resistance requirements.
Access Tool
Glass Type Comparison
Compare the physical and chemical properties of Aluminosilicate, Borosilicate, and other substrates side-by-side.
Compare Materials
Ready to Start Your Ultra-Thin Glass Project?
Tell us your thickness, material, coating, and volume requirements. Our engineering team will respond with a detailed proposal within 2-3 business days.
Frequently Asked Questions About Ultra-Thin Glass
Ultra-thin glass refers to glass substrates with a thickness of 1.1 mm or less, often ranging down to 0.03 mm in specialty applications. It is produced from materials such as aluminosilicate, borosilicate, or soda-lime glass using precision processes like fusion draw or chemical thinning. Ultra-thin glass is valued for its combination of optical clarity, mechanical strength after chemical strengthening, and reduced weight compared to standard glass panels.
It ranges from 0.03 mm to 1.1 mm. At 0.1 mm, a sheet is thinner than a business card — roughly the width of a human hair.
Three primary materials: aluminosilicate (Corning Gorilla Glass family — high scratch resistance), borosilicate (thermal stability for lab and medical use), and soda-lime (cost-effective for consumer electronics). Material choice depends on the application.
Ultra-thin glass is produced through precision forming methods such as the fusion draw process, where molten glass flows over both sides of a wedge-shaped trough and fuses at the bottom to create a thin, uniform sheet with pristine surface quality. After forming, the glass undergoes chemical strengthening through ion exchange, where sodium ions in the glass surface are replaced by larger potassium ions, creating a compressive stress layer that significantly increases mechanical strength.
Commercially available ultra-thin glass can be as thin as 0.03 mm from specialty manufacturers like SCHOTT and Corning. For most industrial and OEM applications, glass in the 0.1 mm to 0.7 mm range is the practical choice, balancing handleability with performance requirements. SW Glass supplies custom ultra-thin glass starting at 0.1 mm for display, sensor, and cover glass applications.
Ultra-thin glass serves many industries: display cover glass for smartphones and tablets, automotive instrument clusters and head-up displays, medical diagnostic equipment screens, industrial HMI touchscreens, foldable device displays, optical sensor windows, and smart home control panels. Each application leverages different properties — display applications prioritize optical clarity, automotive requires thermal cycling durability, and medical devices demand biocompatibility.
Yes, ultra-thin glass can be cut to custom shapes using several methods. CNC machining with diamond-tipped tools handles precision cutouts and edge profiling. Laser cutting offers tighter tolerances for complex geometries. For glass thinner than 0.3 mm, water jet cutting or scoring-and-breaking techniques are sometimes preferred to minimize edge chipping. SW Glass uses automated CNC systems that maintain dimensional accuracy within tight tolerances on glass as thin as 0.1 mm.
Ultra-thin glass is real glass — not a polymer or plastic laminate substitute. While some foldable devices have used polyimide film as a screen protector, ultra-thin glass provides superior scratch resistance, optical clarity, and surface hardness compared to any plastic alternative. Products like Samsung's Ultra Thin Glass (UTG) and SCHOTT's ultra-thin flexible glass are genuine glass that can bend without breaking when chemically strengthened.
Glass under 1.1 mm is called ultra-thin glass. For bending applications: flexible glass, bendable glass, or foldable glass. Branded versions include Corning Willow Glass and SCHOTT UTG.
Chemically strengthened glass undergoes an ion exchange process where the glass is immersed in a molten potassium salt bath at temperatures between 380°C and 450°C. Smaller sodium ions on the glass surface are replaced by larger potassium ions, creating a compressive stress layer that resists cracking and breakage. The process differs from thermal tempering in that it works on thin substrates without causing optical distortion. SW Glass achieves compressive stress values exceeding 450 MPa with depth of layer greater than 8 micrometers. At these values, a 0.5 mm chemically strengthened panel can withstand point impacts that would shatter an untreated panel of the same thickness several times over. The treatment is permanent and does not degrade with age, making it the preferred strengthening method for any high-performance ultra-thin glass application where durability matters.
