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

A near-infrared and absorbing film technology, which is applied in chemical instruments and methods, instruments, optics, etc., can solve the problems that the change of film tone cannot be fully controlled, the appearance is difficult to meet the requirements, and the change of tone cannot be reduced.

CN100442087CInactive Publication Date: 2008-12-10TOYOBO CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2008-12-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The near-infrared-absorbing film of the present invention is a near-infrared-absorbing film in which a near-infrared-absorbing layer composed of a composition containing a near-infrared-absorbing dye and a resin having a maximum absorption at a wavelength of 800 nm to 1,200 nm is provided on a transparent base film. The film, wherein the composition contains 0.01 to 2.0% by mass of a surfactant having an HLB of 2 to 12. Therefore, it is possible to provide a high-fidelity television based on a wide range of absorbing power in the near-infrared region, a high light transmittance in the visible region, a small change in optical characteristics over time, and suitable for higher brightness of displays in recent years. A near-infrared absorbing film with excellent appearance for high-definition or high-quality coatings for broadcasting.
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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...

Examples

Embodiment

[0343] Hereinafter, the present invention will be described in detail based on experimental examples. However, the following experimental examples do not limit the present invention, and modifications made within the range not departing from the gist described above / hereinafter are also included in the technical scope of the present invention. Among them, the acid value of the resin obtained in this experimental example, and the evaluation method of the film are as follows. In addition, all the molecular weights of each resin measured in this experimental example are the values ​​measured by the gel permeation chromatography (polystyrene conversion value).

[0344] [Coating liquid viscosity]