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Optical filter and display using said filter

An optical filter and near-infrared technology, applied in optics, optical components, instruments, etc., can solve the problem of double display of images, and achieve the effect of preventing deterioration due to reaction with water, reducing water absorption, and stabilizing the function of near-infrared absorption.

Inactive Publication Date: 2005-05-18
DAI NIPPON PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The object of the present invention is to provide an optical display that solves image quality problems such as double display of images when an optical filter is arranged in front of the display.

Method used

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  • Optical filter and display using said filter
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  • Optical filter and display using said filter

Examples

Experimental program
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Effect test

Embodiment 1

[0146] Copolymerized acrylic resin (manufactured by Hitachi Chemical Co., Ltd., trade name: Optoretsu oz1330, Tg: 110 ℃, hydroxyl value: 0, acid value: 0, birefringence value: 4nm) as a transparent adhesive resin dissolved in methyl ethyl ketone to form a solid component ratio of 20% (weight basis) of the resin solution, add 0.2 to the resin solution g / m 2 R in the aforementioned general formula (3) is the counter ion (X of trifluoromethyl) - ), and the R of the aforementioned general formula (2) is a diimonium near-infrared absorbing pigment of n-butyl (manufactured by Japan Carit (strain), trade name: CIR1085), and 0.1g / m 2 Phthalocyanine-based near-infrared-absorbing pigments (manufactured by Yamamoto Kasei Co., Ltd., trade name: "YKR3070"), these two near-infrared-absorbing pigments were sufficiently dispersed to obtain a coating solution, and the resulting coating solution was used in a thickness of 100 μm On a polyethylene terephthalate film (manufactured by Toyobo Co....

Embodiment 2

[0148] In addition to using only 0.2g / m 2 A near-infrared-absorbing filter was obtained in the same manner as in Example 1, except that the diimonium-based near-infrared-absorbing dye used in Example 1 was used as a near-infrared-absorbing dye.

Embodiment 3

[0150] In addition to using the copolymerized acrylic resin (Tg: 130°C, hydroxyl value: 0, acid value: 0, bis Refractive value: 9 nm) Except having used the transparent adhesive resin, it carried out similarly to the said Example 1, and obtained the near-infrared ray absorption filter.

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Abstract

The present invention provides an optical filter excellent in near-infrared shielding properties, wherein the optical filter is characterized in that it has a laminated structure in which at least a transparent base material and a near-infrared absorbing layer are laminated, wherein the near-infrared absorbing layer is The acrylic resin contains a near-infrared absorbing dye that absorbs near-infrared rays, and the acrylic resin has a birefringence value of 0 to 15 nm.

Description

technical field [0001] The present invention relates to an optical filter having near-infrared shielding properties. Furthermore, the invention relates to displays, in particular plasma displays, having such an optical filter. Background technique [0002] It is said that electromagnetic waves generated by electrical or electronic devices can have bad effects on other devices, and can also affect human bodies and animals. Taking a plasma display (hereinafter, sometimes abbreviated as PDP) as an example, since it generates electromagnetic waves with a frequency of 30MHz to 130MHz, it will affect surrounding computers or devices using computers, so it is desirable that the generated electromagnetic waves do not leak to the outside as much as possible. [0003] Since the PDP uses a mixture of neon and xenon in the discharge gas, it emits near-infrared rays of 800nm ​​to 1200nm, which may cause various devices that use near-infrared rays, such as remote controls for home applia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/65B32B9/00G02B5/20G02B5/22H01J17/49H04N5/72
CPCG02B5/208Y10T428/14H04N5/65H04N5/72
Inventor 中津川雄二
Owner DAI NIPPON PRINTING CO LTD