Anchor-layer-forming coating liquid, adhesive layer-carrying optical film and method for producing the film

A technology of optical film and adhesive layer, which is applied in the direction of film/sheet adhesive, device for coating liquid on the surface, optics, etc. It can solve the problem of solvent cracks in optical films, the influence of optical properties, and the inability to meet high durability requirements. problems such as resistance, to achieve the effect of inhibiting the decrease of monomer transmittance, reducing the content, and improving the adhesion

Active Publication Date: 2014-01-01
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, optical properties are affected, and high durability in high heat and high humidity environments may not be satisfied
[0009] As described above, in the prior art, there is no example focusing on the problem of solvent cracks occurring on the side of the anchor layer forming surface of the optical film, and further research is required to improve this problem.

Method used

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  • Anchor-layer-forming coating liquid, adhesive layer-carrying optical film and method for producing the film
  • Anchor-layer-forming coating liquid, adhesive layer-carrying optical film and method for producing the film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0159] Production of optical films (polarizing films)

[0160] Polarizer

[0161] A polyvinyl alcohol film having an average degree of polymerization of 2400 and a degree of saponification of 99.9 mol % and a thickness of 75 μm was immersed in warm water at 30° C. for 60 seconds to swell. Next, the film was immersed in an aqueous solution of iodine / potassium iodide (weight ratio = 0.5 / 8) with a concentration of 0.3%, and the film was dyed while being stretched to 3.5 times. Then, it stretched so that the total stretch ratio might become 6 times in the borate ester aqueous solution of 65 degreeC. After stretching, drying was performed in an oven at 40° C. for 3 minutes to obtain a PVA-based polarizer (thickness: 23 μm).

[0162] Transparent protective film

[0163] As the transparent protective film, a triacetate cellulose film (TAC) having a thickness of 80 μm was used without saponification and corona treatment (hereinafter, TAC without saponification and corona trea...

Embodiment 2～16 and comparative example 1～5

[0187] In the optical film (polarizing film), the type of transparent protective film on the side on which the anchor layer is formed (the side on which the pressure-sensitive adhesive layer is laminated) is laminated (the side opposite to the side on which the pressure-sensitive adhesive layer is laminated) It was produced by the same method as in Example 1, except that there are unsaponified TAC films), base concentration, mixed solvent composition, type of binder solution, and / or binder composition as shown in Table 2 Optical film with adhesive layer.

[0188] In Table 2, "substrate" represents the transparent protective film on the anchor layer forming surface side, "dry treatment" represents the type of treatment performed on the anchor layer forming surface side of the substrate, and,

[0189] "Unsaponified TAC" means an optical film (manufactured by Konica Minolta, Inc.) formed of unsaponified cellulose triacetate,

[0190] "Saponified TAC" means an optical film (manuf...

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Abstract

The invention provides an anchor-layer-forming coating liquid, an adhesive layer-carrying optical film and a method for producing the film. The anchor-layer-forming coating liquid can form an anchor layer with excellent conductivity and optical thin film wettability interposed between an optical film and an adhesive layer; the adhesive layer-carrying optical film has excellent conductivity and optical thin film wettability and can restrain the reduction of monomer transmittance of an anchor layer. A coating liquid for forming an anchor layer interposed between an optical film and an adhesive layer, comprising a polythiophene based polymer, a polyoxyalkylene-group-containing polymer, and a mixed solvent comprising 65 to 100% by weight of water and 0 to 35% by weight of an alcohol.

Description

technical field [0001] The present invention relates to a coating liquid for forming an anchor layer interposed between an optical film and an adhesive layer, an optical film with an adhesive layer, and a method for producing the same. As said optical film, surface treatment films, such as a polarizing film, a retardation plate, an optical compensation film, a brightness enhancement film, an antireflection film, and the film which laminated|stacked these, etc. are mentioned. Background technique [0002] In liquid crystal display devices and organic EL display devices, depending on the image forming method, for example, in liquid crystal display devices, polarizing elements must be arranged on both sides of a liquid crystal cell, and polarizing films are usually attached. In addition, in display panels such as liquid crystal panels and organic EL panels, in addition to polarizing films, various optical elements are gradually being used in order to improve the display quality...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D165/00C09D151/08C09D175/04C09J7/02B05D3/00B05D5/12B32B33/00G02F1/1335C09J7/50
CPCC09D141/00C09J2465/003C08G2261/794C08G2261/3223C09J7/0207C09J7/0257C09J2203/318C09J2201/606C09D165/00C09J2471/003C08G2261/51C09D171/02C08L2201/54C08L2205/03C09J7/50Y10T428/2852Y10T428/31533C09J2301/302C08L33/062C08L75/00C08L65/00C08L75/04C09J7/22C09J7/38C08J5/18C09D175/04C09J2301/40
Inventor 外山雄祐木村智之藤田昌邦
Owner NITTO DENKO CORP
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