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OCF & VCF Series™ Transparent Conductive Films
OCF & VCF Series™ Transparent Conductive Films
Dontech manufactures a variety of transparent conductive coatings for a broad range of applications including EMI shielding, optical scanners, touchscreen components, and transparent heater applications. Transparent conductive oxides such as indium tin oxide (ITO) and metals and metal alloys are deposited via DC or AC magnetron sputtering or ion-enhanced e-beam evaporation onto flexible optical substrates. Our standard OCF and legacy VCF Series products are made with coatings on PET (polyethylene terephthalate) substrates, however, coatings can be applied to virtually any flexible optical substrate. Common specialty substrates include glass, acrylic, polycarbonate, and cyclo olefin polymer (COP). Dontech OCF™ Series™ films are available in a wide range of resistivities (e.g., < 3 ohms/sq to >500 ohms/sq) and are ideal for low-cost solutions. ElectroKlear™ brand coatings are available on flexible films under Dontech’s OCF Series™ Optical Conductive Films product family. PET configurations are shown below:
Product Features
Typical OCF Series™ product features are as follows:
- Transparent conductive coatings (single or multi-layer) on an optical quality film; high visible light transmission with low photopic reflection.
- Coatings can be index matched to air (n = 1.0) or bonding (n = 1.5).
- Common uses:
- EMI/RFI shielding for electronic displays, touchscreens, enclosures
- Transparent heaters
- Optical static dissipation filters
- Active touchscreen elements
- Solar reflector/IR transmission reduction for solar loading protection
- Available in a wide variety of product size configurations including rolls, sheets, and precision cut-to-size.
- Optical pressure-sensitive adhesive can be applied to either surface.Typically, they are applied to the non-conductive surface.
- Conductive coatings can be deposited over hard coatings (e.g., antiglare or gloss hard coating) or directly on the optical substrate.
- OCF standard substrate is PET with a thickness of 0.007″ (187 microns). Custom thicknesses and substrates are available, subject to minimum run volumes.
- Protective masking can be applied to front and/or rear surfaces.
OCF is Dontech’s designation for vacuum deposited visually transparent conductive coatings on flexible optical film. The conductive film coatings are constructed in two formats: transparent conductive oxides (TCO), and multi-layer coatings of TCO and metallic layers. The product designations include the OCF prefix followed by the maximum sheet resistivity, measured in ohms per square.
For example, OCF-50 is a TCO film with a maximum sheet resistivity of 50 ohms per square (ASTM-F-1711). Dontech’s OCF Series™, as well as custom coatings, are available on flexible or rigid substrates, as well as complete product solutions.
Configuration Key
R = Rolls: Standard Widths – Imperial: 36”, 24“, 12”; Metric: 1,000 mm, 500 mm, 250 mm. Custom widths available. Rolls are sold by the square foot or square meter.
S = Sheets (24” x 24”; or 500 mm x 500 mm)
C = Custom cut to size – Laser or die cut
DONTECH OCF Series™ Transparent Conductive Films
Dontech has extensive engineering and technical support resources that can assist you with your conductively coated flexible film design needs. Our technical staff have diverse backgrounds relevant to high-performance display and touchscreen markets. For many of our top customers, we function as an extension of their engineering departments, supporting projects from concept to final system delivery.