SCHOTT CONTURAN® - anti-reflective glass for displays

empty
empty

At a Glance

CONTURAN® - SCHOTT´s anti-reflective coated glass enables perfect transmission in many technical applications with an almost reflection-free glass surface.

CONTURAN® is an anti-reflective glass with an optical interference coating on either one or both sides. SCHOTT developed a coating design that prevents optical reflections that result at the glass air passage. CONTURAN® enables almost invisible protection for many applications with the same highest light transmission and a high color rendering index combined with long durability and suitability for daily use.

CONTURAN® can be used for different applications, including cover glasses for indicator boards and technical displays for medical and industrial applications, doors for food displays, protective cover glasses for lighting applications and many more. It can basically be put to use anywhere irritating reflections occur.


Summary:
  • reduction of irritating reflections down to 90%
  • high transmission (>98%) and increased contrast
  • high abrasion resistance and chemical stability of the anti-reflective coating extends its lifetime, makes it hardly vulnerable and easy to clean
  • appears to be invisible and neutral in color (high color rendering index), yet enables perfect viewing
SCHOTT CONTURAN® used as cover glass for a display
SCHOTT CONTURAN® anti-reflective glass is ideally suited as protective cover glass for displays

Watch our video: SCHOTT CONTURAN®

Variety of Products & Applications

Benefits

SCHOTT CONTURAN® - anti-reflective glass for displays is unique due to ...
... High transparency and less reflections ...
  • appears to be invisible and neutral in color, yet enables perfect viewing
  • high transmission characteristics (> 98%)
  • less than 0.5% on each surface
  • increased contrast due to minimized reflection
  • good view of dimly lit items

... Unsurpassed durability ...
  • high abrasion resistance extends the lifetime in the application
  • high chemical stability means that CONTURAN® is hardly vulnerable and easy to clean
  • mechanical and chemical toughening causes incleased mechanical and chemical durabilty
  • in total ideal characteristics for use as protection cover
... Wide product range ...
  • wide-ranging portfolio for specific applications and processing requirements
  • optimized coating design for thermal tempering and chemical toughening

... Processing ...
  • available as bent glass
  • can be adapted to meet customer needs by applying UV or IR protection
  • optional DARO easy-to-clean coating available
  • only anti-reflective coating that can be chemically toughened for optimized process chain

Area of Applications

Information displays
  • customized cover glasses for digital signage, transportation and outdoor displays with various dimensions and customized screen printing and optional anti-fingerprint coating (DARO)
More information on CONTURAN® for transportation and traffic. 
Industrial control
  • touch applications, e.g. machine control
  • ruggedized displays
CONTURAN® for interactive information terminals
CONTURAN® for touch displays
CONTURAN® as cover glass for HMI
CONTURAN® as cover glass for HMI
Medical & Biotech
  • cover glass for displays, e.g. in medical technology
More information on CONTURAN® for healthcare applications. 
Retail applications
  • doors for cooling furniture or glasses for counters, as well in bent form available
CONTURAN® as cover glass for medical applications
CONTURAN® as cover glass for medical applications
CONTURAN® Low-E – Energy-efficient and anti-reflective glass for refrigerated units
CONTURAN® Low-E – Energy-efficient and anti-reflective glass for refrigerated units
Lighting applications
  • cover glass for lighting applications with high transmission and reduced reflections
CONTURAN® for lighting applications

Technical Information

These special characteristics are made possible by the sol-gel dipping process developed by SCHOTT. The base substrate is dipped in different metal oxide solutions, which creates a multi-layered coating that is only a few nanometers thick. Once dipped, the metal oxide coating layers are burned in at 450°C to 500°C.

Interference-optical extinction reduses annoying reflections on the glass surface to a minimum. These coating layers and the curing temperature ensure a mechanically and chemically much more stable coating surfaces than with the conventional PVD techniques (such as vapor deposition or sputtering, for example).
Pristine view of any display
  • every glass surface of conventional float glass reflects about 4% of light (8% overall both sides)
  • CONTURAN® is covered on one or both sides of the float glass with multiple layers of metal oxides
  • CONTURAN® with an anti-reflective coating on both sides reduces reflections by 90%
CONTURAN® therefore has less than 0.5% reflection on each surface and guarentees an unrestricted view due to high light transmission.
Glass substrate types
  • soda-lime glass (floatglass)
  • low-iron, extra-clear soda-lime glass
  • grey soda-lime glass (greyglass)
  • BOROFLOAT®
  • aluminosilicate glass

Floatglass

SCHOTT CONTURAN®

Floatglass
SCHOTT CONTURAN®

CONTURAN® put to the test

Mechanical durability

Thanks to its specific coating design, CONTURAN® offers an impressive 90% reduction in annoying surface reflections. Using the sol-gel dipping process developed in-house, nanometer-thin metal oxide layers are baked into the glass surface at high temperatures.

The coating therefore also impresses with top durability values: CONTURAN® is one of the hardest anti-reflex coatings on the market and is extremely resistant to mechanical and chemical loads on the everyday use, which makes it ideal for many applications in sophisticated environments.

The advantages of a dip coated glass compared to a sputtered product:
  • Baked surface coating via high temperature process (> 400°C) essential for very high adhesion to the glass surface
  • High mechanical stability of the coating consisting of several layers of different metal oxides
  • Exceptional scratch resistance and high abrasion resistance
  • High chemical stability ensures high resistance to permanent contaminants
  • Easy and regular cleaning possible without problems
  • The result is a durable solution for numerous applications
Pencil Hardness Test
The Pencil Hardness Test achieved class 9H, a significantly higher resistance than previously known from anti-reflective coatings.
Pencil Hardness Test
Pencil Hardness Test
Testing the
scratch resistance

(DIN EN ISO 15184:2012)
Hardness Pen Test
By using the Erichsen Hardness Pen, a metal needle is pressed onto the surface with defined forces (0,5N- 20N) in order to create visually detectable damages and scratches. The SCHOTT sol-gel coating CONTURAN® withstands a force of 20N without visible damage, whereas the surfaces of competitor products gets damage at a much lower force already.
Hardness Pen Test
Hardness Pen Test
Testing the
scratch resistance

(DIN 55656)
Cheesecloth Rub Test
The Cheesecloth Rub Test is an indicator of the coating's abrasion resistance. It is based on the US military standard MIL-C-76 C and simulates moderate abrasion. In this test, a textile cushion is pressed with a defined force onto a coated surface and then moved several times. The surface is then checked for damage. CONTURAN® convinces with 450,000 cycles without any visible surface damages, whereat competitive products perform > 90% worse.
Cheesecloth Rub Test
Cheesecloth Rub Test
Testing the
abrasion resistance

(MIL-C-76 C)
Taber Test
The Taber Test is another test method for determining the abrasion resistance of the coating. CONTURAN® achieves a very good class ≤ 2 here.
Taber Test
Taber Test
Testing the
abrasion resistance

(DIN ISO 3537:2018)
CONTURAN® - chemical coating resistance
Chemical durability

The test conducted by the Materials Testing Centre in Karlsruhe in accordance with the UB MED Guideline MFR 890/009 put CONTURAN® to the test in terms of chemical layer resistance.

The test applied standard, medical-sector cleaning agents containing various classes of active ingredients and then examined their impact on CONTURAN® over several hours. The surfaces and their appearance were assessed and evaluated.

Based on this test, we can make recommendations for the majority of the substances tested:
Class of chemical agent Specific test medium Result
Alcohol Incidur-Spray (undiluted), Ethanol (96 % Vol.), Mykrozid liquid (undiluted), Meliseptol rapid (undiluted), Isopropyl (70 %)
Aldehyde Melsitt (10 % Vol.), Lysoformin (2 % Vol.), Aldasan 2000 (4 % Vol.),
Kohrsolin (0.5 % Vol.), Dismozon (0.5 %)
Peroxide compounds Perform (3 %), Hydrogen Peroxide (3 %)
Pyridine derivative Spray Activ (undiluted)
Benzine Benzine / Petroleum ether (undiluted)
Dish liquid Regular dish liquid (1 %)
Organic acids Bio-AntiBact med
Limewater -
Alkylamine Incidin Plus (8.0 % Vol.)
Quaternary compounds Mykrozid sensitive liquid (undiluted), Morning Mist (1:64 diluted),
Terralin protect (2.0 % Vol.), Microbac® Tissues (direct)
Taski Sprint DS 5001 (0.5 % Vol.), Sulfanios Fraicheur Citron (0.25 % Vol.)
Chlorine derivatives Sodium hypochlorite (bleach; 10 %)
Terralin (0.5 % Vol.)
Antiseptic agent Chlorhexidin (0.5 %) in Isopropyl (70 %)
Ammonia Ammonia hydroxide solution (1.65 % Vol.)
✓ = tested as harmless
•  = residues may accumulate on the surface
 
CONTURAN® - chemical coating resistance
Maximum value in additional disciplines

As a matter of course, CONTURAN® also performed brilliantly in conventional tests that rigorously examined the durability of surfaces under extreme circumstances. Among these tests were the
 
  • standardised CASS-test (Copper-accelerated acid salt spray test) and
  • the NSS-test (Neutral salt spray test) that tested the anticorrosive coating.

Even in the test of the climate resistance according to DIN EN ISO 6270-2-CH, in which the coating is exposed to a condensation atmosphere with a constant humidity, CONTURAN® passed the test without damage to the coating.

Supply forms and processing options

 
Supply forms CONTURAN® stock sizes*
Thickness Monolithic glass:
  • 1.1 mm (single side coating only)
  • 1.6 mm, 2.00 mm, 3.00 mm, 4.00 mm, 5.00 mm, 6.00 mm, 8.00 mm, 10.00 mm
Dimensions
  • 1,770 mm x 1,220 mm
  • 1,770 mm x 3,180 mm
Different types
of CONTURAN®
Monolithic:
  • CONTURAN® Standard (floatglass)
  • CONTURAN® Magic (low-iron, extra-clear soda-lime glass)
  • CONTURAN® Grey (greyglass)
  • CONTURAN® BOROFLOAT®
Laminated:
  • CONTURAN® Protect Standard
  • CONTURAN® Protect Magic
  • CONTURAN® Protect Grey
Others Oleophobic coating on CONTURAN®: Laminated glass with IR- & UV-protection: Chemically toughened glass: Highly break resistant chemically toughened glass: Coating:
  • bluish/greenish coating
  • weather-resistant coating (greenish/bluish)
  • temperable coatings
Processing methods
  • cutting
  • edge treatment
  • drilling
  • screen printing
  • thermal tempering
  • chemical toughening
  • laminating
  • bending
*Cut-to-size on request 
Glass Soda-Lime (float/low-iron/grey) BOROFLOAT® Aluminosilicate Glass
Surface Anti-Reflective Anti-Reflective + Low-e Anti-Glare Anti-Reflective
Product CONTURAN® CONTURAN® Protect CONTURAN®
IR Protect
CONTURAN® Tough CONTURAN®
Low-e
SCHOTT Anti-Glare CONTURAN® CONTURAN®
Tough AS
Reflectance* 0.9% 0.9% 0.9% 0.9% 3.0% 8.0% 0.9% 0.9%
Transmission* 99% 98% > 91% 99% 91% 91% 99.% 99%
UV protection            
Thermal toughening    
Chemical toughening      
Weather resistant  
Bendable  
Splinter protection            
Improved insulating              
Easy to clean via DARO  
 
Medical Displays      
Food Displays          
Outdoor & digital signage    
Transportation    
Touch Displays  
Industrial Equipment    
Lighting        
* Luminous reflectance ρvA/luminous transmittance τvA based on substrate 2 mm low-iron glass or equivalent

Downloads

Contact

If you have a product inquiry, questions for service & support or other topics for SCHOTT CONTURAN® - anti-reflective glass for display applications, please click the contact button. You will be forwarded to our contact form.