Grid polarizing film, method for manufacturing grid polarizing film, optical laminate, method for manufacturing optical laminate, and liquid crystal display apparatus

A technology of optical laminates and polarized optics, applied in optics, polarizing elements, nonlinear optics, etc., can solve the problems of uniform optical characteristics, difficulty in controlling the width and shape of metal cracks, etc., and achieve improved brightness and polarized light separation performance Excellent effect of improving utilization efficiency

Inactive Publication Date: 2008-05-21
ZEON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the method described in Patent Document 3 has a problem that it is difficult to obtain uniform optical ch

Method used

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  • Grid polarizing film, method for manufacturing grid polarizing film, optical laminate, method for manufacturing optical laminate, and liquid crystal display apparatus
  • Grid polarizing film, method for manufacturing grid polarizing film, optical laminate, method for manufacturing optical laminate, and liquid crystal display apparatus
  • Grid polarizing film, method for manufacturing grid polarizing film, optical laminate, method for manufacturing optical laminate, and liquid crystal display apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0177] Embodiment 1 (manufacture of long strip grid polarizing film 1)

[0178] Dimensions brazed on a shank made of SUS of 8 mm x 8 mm x 60 mm using a focused ion beam processing device (concentrated ion beam processing device) (Seiko Instruments (Seiko Instruments) Co., Ltd., SMI3050) The 0.2mm×1mm surface of a cubic single crystal diamond of 0.2mm×1mm×1mm is processed by an argon ion beam for focused ion beam processing, and parallel 0.1μm-wide and 0.2μm-long sides are engraved on a 1mm-long side with a width of 0.1μm and a depth of 0.1μm. A groove of 0.1 μm was formed, and 1,000 linear protrusions of 0.1 μm in width and 0.1 μm in height were formed at a pitch of 0.2 μm to produce a cutting tool.

[0179] Nickel-phosphorus electroless plating with a thickness of 100 μm is applied to the entire peripheral surface of a cylindrical stainless steel SUS430 roller with a diameter of 200 mm and a length of 150 mm. Cylinder grinding disc (Studer (スチユ一ダ) company, precision cylinder...

Embodiment 2

[0186] Embodiment 2 (manufacture of long strip grid polarizing film 2)

[0187] Except that base film B manufactured by polycarbonate (Teijin Chemicals, Panlite (panlite) K-1300Y) manufactured by casting method (Kiyast method) was used instead of base film A, a long strip was obtained in the same manner as in Example 1. Grid polarizing film2. In addition, the in-plane average retardation of the base film B at a wavelength of 550 nm was 8 nm, the in-plane retardation deviation in the width direction and the longitudinal direction was ±2 nm, and the optical axis deviation was ±8°.

[0188] The absorbing polarizing film obtained in Example 1 and the strip-shaped grid polarizing film 2 obtained above were successively pulled out from the roll, and at the same time, an adhesive layer formed by using a polyurethane adhesive was bonded to one side of the absorbing polarizing film. A long strip-shaped grid polarizing film is laminated on top, and a long strip-shaped protective film m...

Embodiment 3

[0203] Embodiment 3 (manufacture of strip-shaped grid polarizing film 3)

[0204] Using a focused ion beam processing device (Seiko Instruments Co., Ltd., SMI3050), brazed on a shank made of SUS with a size of 8 mm x 8 mm x 60 mm, the cubic single crystal diamond with a size of 0.2 mm x 1 mm x 1 mm was brazed. On the 0.2mm×1mm surface, the focused ion beam processing is performed by argon ion beams, and parallel grooves with a width of 50nm and a height of 60nm are carved on the side of 1mm long at a distance of 130nm, and grooves with a width of 80nm and a height of 60nm are formed at a distance of 130nm. The linear protrusions are used to make cutting tools.

[0205] Nickel-phosphorus electroless plating with a thickness of 100 μm is applied to the entire peripheral surface of a cylindrical stainless steel SUS430 roller with a diameter of 80 mm and a length of 125 mm, and then a cutting tool with linear protrusions and a precision cylinder manufactured previously are used G...

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Abstract

The present invention provides a strip-shaped grid polarizing film, which includes: a strip-shaped resin film and a plurality of grid lines extending approximately parallel to each other arranged on the surface and/or inside of the resin film, the grid The line is made of a material G having an absolute value of 1.0 or more of the difference between the real part n1 and the imaginary part κ1 of the birefringence index (N1=n1-iκ1), and a plurality of grooves extending approximately parallel to each other are formed on the surface of the resin film, The above-mentioned grid lines are composed of a thin film of material G laminated on the bottom surface of the grooves and/or on the top surface of the ridges between adjacent grooves. Also provided is an elongated optical laminate comprising the elongated elongated grid polarizing film and other elongated elongated polarizing optical films.

Description

technical field [0001] The present invention relates to a grid polarizing film (grid polarizing film), a manufacturing method of the grid polarizing film, an optical laminate, a manufacturing method of the optical laminate, and a liquid crystal display device. Background technique [0002] A grid polarizer is known as a polarizer capable of freely setting a polarization plane (Non-Patent Document 1). It is an optical component with a grid structure formed by arranging multiple linear metals (metal wires) in parallel at a certain period. When forming such a metal grid, when the grid period is shorter than the wavelength of the incident light, the polarized light component parallel to the linear metal forming the metal grid is reflected, and the polarized light component perpendicular to it is transmitted, so it has The function of making a polarizer for single polarized light. It has been proposed that the grid polarizer can be used as an optical component of an isolator in...

Claims

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Application Information

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IPC IPC(8): G02B5/30G02F1/1335
Inventor 上岛贡村上俊秀涩谷明庆藤田惠美林昌彦荒川公平
Owner ZEON CORP
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