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Zeon SMI

Optical Films

ZeonorFilm® combines ZEONOR® premium resin, made of Cyclo-Olefin Polymer (COP), with unique film processing technologies to achieve industry-leading optical clarity, durability, and performance for optical applications.

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Technical information

ZeonorFilmTM optical film samples image of multiple of optical film
researcher evaluating zeonorfilm optical COP

Clarity You Can See and Trust

Designed for advanced display devices, ZeonorFilm® provides superior light transparency, ultra-low haze, and excellent stability in high temperature/humidity environments necessary for mobile devices (smartphone, tablets), AR/VR wearables, and TVs.

  • Glass-like optical clarity
  • Ultra low haze
  • Availability as isotropic and ¼, ½ wave retardation films
  • High heat resistance
  • Low moisture or water adsorption
  • Low outgassing
  • Good chemical compatibility with acids/bases and alcohols

Glass-Like Clarity

ZeonorFilm® delivers exceptional optical properties, with over 91% light transmittance and haze levels as low as 0.1%. It has higher transmittance over a wider range of wavelengths, with significant improvement in the 200-400 nm range.

transmittance graph for optical films (200–1600 nm) comparing Alkali-free glass, ZeonorFilm®, PC film, and PET film. X-axis: wavelength (nm). Y-axis: % transmittance.

¼ and ¼-wave Retardation Series (ZB-, ZM-, ZD-series)

ZeonorFilm® enables wider viewing angles with higher light transmittance. Typically used as part of a polarizer construction, ¼-wave (single sheet) and ½-wave (multi-sheet) films combine intrinsic positive and negative properties that enable high on- and off-axis contrast with a reduced reflective color shift.

Optional UV Cutoff

An optional UV cutoff, available in the ZeonorFilm® ZD and ZF series, virtually eliminates transmission below 400 nm.

Isotropic ZF-series

ZeonorFilm® ZF-series has low distortion optical performance with ultra-low and uniform birefringence.

Dimensional Stability

ZeonorFilm® maintains optical and structural integrity under UV exposure, and in high-humidity and high-temperature (to 170 °C) environments. Select grades are able to withstand ITO deposition temperatures.

Chemical Resistance

ZeonorFilm® can withstand polar solvents, acids, and alkaline chemicals, for compatibility with various coatings and processing environments, including ITO vacuum deposition.

Low Outgassing

By utilizing ZEONOR®, and ultra-pure Cyclo Olefin Polymer with minimal leachable substances and metal residues, ZeonorFilm® minimizes outgassing, ensuring uncompromised device reliability and optical performance.

Technical Highlights

ZeonorFilm® is available as isotropic (ultra-low birefringence) as well as ¼- and ½-wave retardation films.

PropertyValueUnitTest Method
Thermal Properties
Glass transition temperature 140~170℃Dynamic viscoelasticity measurement @ 1Hz,2℃/min.
Physical Properties
Specific gravity1.03ーFixed volume expansion method @ 25℃
Water absorptionunder 1%JIS K 7209, ASTM D570
Optical Properties
Refractive index1.53ーSpectroscopic ellipsometry, reflected light @ 590nm
Light transmittance92%Hazemeter
Retardation<0.1%AxoScan : 590nm
Mechanical Properties
Liner expansion coefficlent70ppm/℃TMA method @ 25～100℃
Tensile strength70~80MpaNo.8 dumbbell, 10mm/min
Tensile breaking elongation20~50%No.8 dumbbell, 10mm/min
Pencil hardness3BーScratch hardness method (pencil) measured on a glass board
Dlelectric constant2.4ーprecision LCR meter @ １MHz

Applications

See the Performance

A foldable phone display using optical film.

Polarizer Stacks for LCD & OLED Displays

Superior viewing angle compensation for premium viewing without compromise in OLED and LDC panels.
Medical worker interacting with a tablet computer screen made with zeon cop resin

Substrate for ITO-coated Touchscreen

Uncompromising optical clarity, low haze, and uniform dielectric constant elevate the display quality of ITO-coated substrates.
Sunglasses with an optical film coating

Sunglass Readability

Unmatched polarized sunglass readability in portrait and landscape orientation is obtained using ZeonorFilm® ZD-series with a 45° slow-axis, enabling circular polarizers to be constructed in efficient roll-to-roll fashion.
zeonorfilm for optical plates in led displays

Polarizing Plates

Extremely high light filtration to enhance contrast and reduce glare

Certifications

Our certifications affirm our commitment to Quality and Compliance. Our factories are certified for ISO 9001 and 14001, representing world-class standards for Quality and Environmental considerations.

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