Near-infrared absorbing film, process for producing the same, near-infrared absorbing film roll, process for producing the same and near-infrared absorbing filter

Abstract

The near-infrared ray absorption film of the present invention is a near-infrared ray absorption film in which a near-infrared ray absorption layer comprising a composition containing a near-infrared ray absorbing dye having maximum absorption at a wavelength of 800 to 1200 nm, and a resin is provided on a transparent substrate film, and is characterized that a surfactant having HLB of 2 to 12 is contained in the composition at 0.01 to 2.0% by mass. There can be provided a near-infrared ray absorption film excellent in coated film appearance which has the wide absorbing ability in the near-infrared ray absorbing region, has a high light transmittance in the visible light region, has little change in optical properties with time, and can respond to a higher luminance of a display, and higher-definition and higher image quality by Hi-Vision broadcasting in recent years.

Description

technical field [0001] The present invention relates to a near-infrared absorbing film which has a high transmittance in the visible light region, less deterioration, and a uniform coating appearance, and is suitable for optical filters for displays, and a method for producing the same, and also relates to a long film with little change in color tone, etc. A near-infrared-absorbing film roll, a method for producing the same, and a near-infrared-absorbing filter using the film. Background technique [0002] A film capable of absorbing near-infrared rays has the property of blocking near-infrared rays and passing visible light, and can be used in various applications as a near-infrared-ray absorbing film. [0003] For example, in recent years, plasma displays have attracted attention as thin and large-screen displays, but the near-infrared rays emitted from the plasma displays will cause misoperation of electronic equipment using near-infrared remote controllers, so it is nece...

AI Technical Summary

Problems solved by technology

However, in this method, although the change in color tone in the longitudinal direction (MD direction) of the film can be controlled to some extent, the change in color tone in the film width direction (TD direction) cannot be sufficiently controlled.

In addition, only by controlling the coating amount by using the rotation speed of the micro-gravure plate, it is impossible to greatly reduce the change in color tone compared to a long near-infrared ray absorbing film, and it is also difficult to meet the requirements in terms of appearance.

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