Elliptical Polarizing Film

  • Our products in the EP (Elliptical Polarizing Film) Series are elliptical polarizing films for STN cell color compensation.
  • These elliptical polarizing film can also be used for applications other than STN cell color compensation, as follows:
    Circular polarizing film for touch panels
    Circular polarizing film for EL (Electro Luminescence)
    Circular polarizing film for 3D glasses
  • The EP Series products are available in sizes up to maximum 495×1000mm, and excel in uniformity of retardation values.
  • Our retardation films use uniaxially stretched PC (polycarbonate) films.

For samples, please contact Polatechno's Sales Department in charge of your area.

Product names 560 C SK 43 ZK3 35 D (-)
(1) (2) (3) (4) (5) (6) (7) (8)
No. Meaning Example
(1) Retardation value 560=560nm
(2) Retardation film material C = polycarbonate
W = Wideband retardation film
(3) Type of polarizing film Iodine-type: K = KN; SK = SKN
Dye-type: SH = SHC
(4) Transmittance of polarizing film 43 = 43%
(5) Surface treatment HC = Hard coat
ZK1 = High resolution anti-glare (haze 5)
ZK3 = High resolution anti-glare (haze 9)
ZK1LRC = Low-reflection anti-glare (haze 5)
(6) Absorption axis angle of polarizing film 35 = 35°
(7) U = Right side up
D = Right side down
(8) Retardation film optical axis (-) = Parallel-cut

Optical Characteristics

Item Characteristic
Retardation value (nm) 430±10; 560±10; 570±10
580±10; 600±10; 140±10
Variation in retardation values on a plane 20nm or less

Note: Please consult us about retardation film's retardation values.

Durability

560C-K44-35D 140HC-SH40-45D
Against heat 80℃ × 500h 90℃ × 500h
Against humidity 60℃×90%RH × 500h 65℃×93%RH × 500h

Wavelength Dispersion Characteristics

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