Dai Nippon Printing Co., Ltd.

Dai Nippon Printingco., Ltd.

Keiji Kashima

Fumihiro Arakawa

Takashi Kuroda

Satoru Hamada

Kazuki Yamada

Kenji Shirai

Takeshi Haritani

Hiroyuki Nishimura

Masanori Umeya

Tomoya Kawashima

Hideki Usuki

Kumiko Kambara

Yuya Inomata

Masanori Fukuda

Shoji Takeshige

Yoshihide Nakao

Koji Ishizaki

Hiroshi Yamamoto

Masahiro Goto

Yukio Taniguchi

Hiroshi Sekiguchi

Hideo H Fujimura

Yasuki Suzuura

Kumpei Oda

Koujiro Ookawa

Tadashi Furukawa

Yusuke Hiruma

Hideaki Fujisaki

Hirofumi Yumoto

Yukihiro Toyota

Mariko Goto

Humihiro Arakawa

A high-precision marker, which is easy to manufacture, has a base material layer, a first layer which is laminated onto one surface of the base material layer, and which is observed in a first color, and a second layer which is partially laminated onto the first layer, is observed in a second color different from the first color, and partially conceals the first layer, wherein the first layer is observable in a region in which the second layer is not laminated, and the second layer is formed by a resist material.

Marker, method for manufacturing marker, and detection target

Disclosed is a selectively reflective member which can uniformly reflect only a desired wavelength with high efficiency even in a large area and, at the same time, is highly cost effective. Specifically, there is provided an electromagnetic wave reflecting member that reflects electromagnetic waves with a specific wavelength, the electromagnetic wave reflecting member comprising a first selectively reflective layer that reflects only a clockwise or counterclockwise circularly polarized light component with wavelength &#x3bb; in incident electromagnetic waves, a phase difference layer, and a second selectively reflective layer that reflects only a clockwise or counterclockwise circularly polarized light component with wavelength &#x3bb;, provided in that order, the phase difference layer having a retardation satisfying the following equation:={(2+1)/2&#xb1;0.2}&#xd7;&#x3bb;wherein Re represents average retardation; &#x3bb; represents wavelength; and n is an integer of 1 or more.

Electromagnetic wave reflecting member

Sufficiently sharp directivity can be secured with a simple configuration in a configuration that improves the efficiency of utilizing the light exiting from a primary light source using a reflective polarizing plate. A backlight unit () supplies light exiting from an exit surface of a light guide plate () to a liquid-crystal display panel () via a reflective polarizing plate () after correcting directivity of the exiting light using a prism sheet () having a downwardly convex shape. A &#xbc;-wavelength plate () is provided between the prism sheet () and the reflective polarizing plate (), between the prism sheet () and the light guide plate, or between the light guide plate and a reflective sheet disposed on a surface of the light guide plate opposite to the prism sheet ().

Backlight unit, liquid-crystal display apparatus, and stacked structure

A pattern phase difference film is manufactured by a process including a laminate body formation step of applying a pattern alignment layer composition on a substrate to form a laminate body, a heat-drying layer formation step of heat-drying the composition to form a heat-dried layer, a pattern alignment layer formation step of irradiating a polarization pattern onto the heat-dried layer to form a pattern alignment layer, and a phase difference layer formation step of forming a phase difference layer including a rod-shaped compound on the pattern alignment layer. During the steps between the heat-drying layer formation step and the phase difference layer formation step, the heat-dried layer and the pattern alignment layer are exposed to the air for four hours or less.

Patterned phase difference film and method for manufacturing same

A light guide plate has a light exit surface, a back surface opposed to the light exit surface, and a light entrance surface consisting of at least part of a side surface. The light guide plate also has a body portion, and a light exit-side layer formed from an ionizing radiation curable resin. The light exit-side layer includes an optical element portion which defines the light exit surface. The optical element portion includes unit shaped elements arranged in one direction intersecting a light guide direction, each unit shaped element extending linearly in a direction intersecting the one direction.

Light guide plate, method for producing light guide plate, surface light source device, and liquid crystal display device

A pattern phase difference film, which is used to display 3D images using a passive system, and provides a method for producing a pattern phase difference film that can be manufactured with high precision, easily and in large quantities. A mask, which has slits that are made narrow compared to the width of a region that is to undergo exposure treatment and are provided for exposure treatment, is manufactured.

Method for producing pattern phase difference film, pattern phase difference film, and image display device

Method for producing an electromagnetic wave reflective film by a first selective reflection layer forming process of using a transparent substrate; applying a first selective reflection layer forming coating solution on the transparent substrate to form a first selective reflection layer forming layer; irradiating the first selective reflection layer forming layer with ultraviolet rays at a dose in the range of 25 mJ/cmto 800 mJ/cm; and thereby forming a first selective reflection layer; and a second selective reflection layer forming process of: using a second selective reflection layer forming coating solution; applying the second selective reflection layer forming coating solution on the first selective reflection layer so as to be in direct contact therewith to form a second selective reflection layer forming layer; irradiating the second selective reflection layer forming layer with ultraviolet rays; and thereby forming a second selective reflection layer.

Electromagnetic wave reflective film and method for producing same

The present invention pertains to a pattern phase difference film, which is used to display 3D images using a passive system, and provides a method for producing a pattern phase difference film that can be manufactured with high precision, easily and in large quantities. In a mask provided for manufacturing an alignment film, slits, which are provided for exposure treatment, are made so as to gradually narrow toward the ends in the longitudinal direction.

Method for producing pattern phase difference film

A phase difference layer laminated body used in a three-dimensional liquid crystal display device, wherein unit cells are divided into groups for left and right eyes, which are given different degrees of polarization, thereby creating a three-dimensional image, further wherein the phase difference layer laminated body has a base material having orientability, and a phase difference layer made of a liquid crystal material that can form a nematic phase and formed in a pattern with two different portions, and the liquid crystal material in each of two different portions is oriented to have different refractive index anisotropy each other that conforms to the two different degrees of polarization and fixed as it is.

Phase difference layer laminated body for three dimensional liquid crystal display device and manufacturing method thereof

A polarizing plate protection film and a polarizing plate which can restrain generation of rainbow-like irregularities and enables to produce an excellent quality liquid crystal display device when a commercially-available film is used as it is under commercially-available conditions or when a film produced by a common film forming method is used. The polarizing plate protection film includes: a transparent substrate; and a refractive index difference-mitigating part formed on the transparent substrate and provided with a low refractive index layer at its most outer layer, in which the low refractive index layer has a refractive index to the light transmitted through the transparent substrate smaller than that of the transparent substrate and bigger than that of the air. An in-plane distribution of the in-plane retardation (Re) of the transparent substrate is 5 nm or more.

Polarizing plate protection film, polarizing plate, and liquid crystal display device

A main object of the present invention is to provide a rotating plate hardly generating variation in the rotation angle of the liner polarization so as to easily realize a desired rotation angle, and a liquid crystal display device enabling observation of a bright image by use thereof even in a state with a polarizing glasses put on. To attain the object, the present invention provides an optical rotation plate comprising a transparent substrate, and an optical rotation layer formed on the transparent substrate and containing a rod-shaped compound for forming a cholesteric structure and having a function of rotating transmitted liner polarization, wherein the cholesteric structure has a 90 degrees or larger twist angle and a pitch in a range of 450 nm to 4,000 nm.

Optical rotation plate and liquid crystal display device using the same

An optical functional film which exhibits excellent optical characteristics without using an alignment film, and having the excellent adhesion property between layers. The optical functional film includes: a substrate having a property as an optically negative C-plate, and an optical functional layer formed on the substrate and having a rodlike compound. The optical functional layer is formed directly on the substrate, and the rodlike compound forms a random homogeneous alignment in the optical functional layer.

Optical functional film, retardation film, composition for forming optical functional layer and producing method of optical functional film

A liquid crystal display polarizing plate that can reliably exhibit optical properties and be bonded to a liquid crystal cell without causing degradation of the optical properties. The liquid crystal display polarizing plate includes: a retardation film which has a substrate including a cellulose derivative and a retardation layer formed directly on the substrate and containing the cellulose derivative and a rod-like compound having refractive index anisotropy; a polarizer bonded to the retardation layer of the retardation film and including polyvinyl alcohol; and a polarizing plate protection film bonded to the polarizer.

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Shinjuku-ku, Japan

Keiji Kashima