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      2. Our Business

        Polatechno Business

        We have expanded business areas to the light-controlled business that also targets infrared rays to ultraviolet rays and even X-rays in addition to visible light in our Polatechno business. We now manufacture and sell polarizing films for liquid crystal displays, phase contrast films, polarizing films for projectors, components for X-ray analyzers and other precision processed products. We are aiming to contribute to society by speedily and accurately meeting the changing needs of the market and customers.

        Main Products

        Organic Polarizers

        Dye-type polarizing film

        Dye-type polarizing film

        Iodine-type polarizing film

        Iodine-type polarizing film

        Bare polarizing film for sunglasses

        Bare polarizing film for sunglasses

        Circular and elliptical polarizing film

        Circular and elliptical polarizing film

        Functions of Polarizing Film

        Ordinary light (natural light) travels while oscillating in 360° directions. Polarizing films have a characteristic that allows light oscillations to be shifted from 360° to one desired direction. As shown in the figure on the right, suppose that a polarizing film is a fine filter that has lattices arranged in one specific direction. Light that has oscillations parallel to these lattices can pass through the lattices, but light oscillating in another direction is intercepted. Light can thus be set on a constant and desired direction by allowing it pass through a filter with such a structure.

        There are three important optical characteristics of polarizing film: transmittance, polarizing efficiency and hue. LCD luminance and contrast increase as transmittance is brought closer to 50% (theoretical limit value) and polarizing efficiency to 100%.

        Structure of Polarizing Film

        Polarizing film is made by dyeing film (mainly polyvinyl alcohol (PVA)) or by iodine being adsorbed onto its surface, then stretching and orientating it. This gives the film polarization characteristics that allow only light with a certain oscillation direction to pass through it. Furthermore, in order to secure mechanical strength of the film, backing materials such as a TAC film or a protective film is laminated to it.

        Polarizing film is given various kinds of treatment. The film itself is also required to have functions to control reflection, stain and light leakage. Some types of LCDs, touch panels, or organic EL displays also require a product made by laminating a retardation film to the polarizing film. Polatechno is ready to provide our customers with polarizing film most suitable for their respective needs.

        Product introduction Video

        Next-generation dye-type polarizer GHC for in-vehicle applications

        High-contrast achromatic polarizer

        Inorganic Polarizers ProFlux™


        To ensure bright and clear image display of LCD projectors, our high-durability polarizers are indispensable as they can perform and maintain superior functions for many hours under high temperature conditions. Our inorganic polarizers ProFlux™ fully meets the increasingly rigorous demands for polarizer performance.
        Made by forming an aluminum film on a glass wafer with fine slits, the ProFlux™ provides required polarizer performance. This gives ProFlux™ the durability and light fastness far exceeding those of organic polarizing films.
        Not only can it polarize visible light but also infrared and ultraviolet light. Thanks to these superb characteristics, its applications are constantly expanding to include medical equipment, LCDs and biometrics, among others.

        ProFlux™ wafers

        ProFlux™ wafers

        Electron micrograph of ProFlux™ inorganic polarizer

        Electron micrograph of ProFlux™ inorganic polarizer

        With our ProFlux™ inorganic polarizer,
        the reflective type (left) or absorption type (right) is optional according to your use.

        Results of ProFlux™ Ultra-high Temperature Radiation Test

        When compared with a dye-type polarizing film (right), no change can be observed with ProFlux™ (left) whereas the former shows burning.

        Infrared and Ultraviolet Optical Characteristics of ProFlux™

        Our ProFlux™ shows polarizing characteristics even in the infrared and ultraviolet ranges.

        Technological Development Derived from ProFlux™

        We are promoting application of our microprocessing technology.

        Patterned Polarizer

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