Dai Nippon Printing Co., Ltd.

Other

Seiichi Isojima

Takashi Kuroda

Hiroki Nakagawa

Norinaga Nakamura

Gen Furui

Tomoyuki Horio

Junya Eguchi

Eiji Ooishi

Hiroshi Kojima

Jun Sato

Makoto Honda

Yukimitsu Iwata

Shoichiro Ogumi

Seiji Shinohara

Masayuki Tsunekawa

Takashi Takekoshi

Kana Yamamoto

Takahisa Nomura

Atsuhiro Kobayashi

Yusuke Hiruma

Makoto Nanaumi

Kana Horii

Provided is an optical plastic film that can have good scratch resistance against both a hard material and a soft material. An optical plastic film has a first surface and a second surface located on the opposite side to the first surface, wherein the indentation hardness of the cross section on the first surface side, the indentation hardness of the cross section on the second surface side, and the indentation hardness of the cross section in the middle in the thickness direction satisfy a predetermined relationship in the conveyance direction and the transverse direction of the plastic film.

Plastic film for optical applications, polarizing plate, and image display device

Provided is an optical film which can promise to be thinner and makes it possible to enhance adhesion between a first functional layer and a second functional layer; and a polarizing plate and an image display device both of which include such an optical film. One aspect of the present invention is to provide an optical filmincluding a light-transmitting base material, a first functional layer, and a second functional layerin this order, and further including a mixed layer; wherein at least one of the first functional layerand the second functional layercontains an ultraviolet absorber; wherein the mixed layeris provided between the first functional layerand the second functional layer, is adjacent to the first functional layerand the second functional layer, and contains a component of the first functional layerand a component of the second functional layer; wherein the total film thickness of the first functional layer, the second functional layer, and the mixed layeris 1 μm or more and 10 μm or less; and wherein the ratio of the film thickness of the mixed layerto the total film thickness of the first functional layer, the second functional layer, and the mixed layeris 0.6% or more and 40% or less.

Optical film, polarizer protective film, transfer body for polarizer protective film, polarization plate, image display device, and method for manufacturing polarizer protective film

Provided is an optical film that, when being incorporated into an image display device, can suppress the image display device from appearing pale. An optical film including a UV-absorbing layer containing a UV-absorbing agent B on a plastic film containing a UV-absorbing agent A, wherein fluorescence emission when the plastic film side is irradiated with excitation light having a wavelength of 365 nm and fluorescence emission when the UV-absorbing layer side is irradiated with excitation light having a wavelength of 365 nm satisfy a specific condition.

Optical film, polarizing plate, surface plate for image display device, and image display device

An optical plastic film can suppress rainbow unevenness when viewed with naked eyes and blackout when viewed with polarized sunglasses without high in-plane retardation. The film has an average of in-plane retardations of 600 nm or less and satisfies: when a sample with a size of 50 mm in length×50 mm in width is cut out of the film, slow axis directions are measured at a total of five points including four points 10 mm advanced from the four corners of the sample toward the center and the center of the sample, and angles formed by any one side of the sample with the slow axis directions at the measurement points are respectively defined as D1 to D5, the difference between the maximum value and the minimum value of D1 to D5 is 5.0 degrees or more.

Plastic film for optical applications, polarization plate, and image display device

An electroconductive film which is capable of inhibiting milkiness; and a touch panel and image display device that include the electroconductive film are provided. According to one aspect of the present invention, an electroconductive filmincluding at least an electroconductive part, wherein the electroconductive partincludes a light-transmitting resinand a plurality of electroconductive fibersplaced in the light-transmitting resin, and the diffused light reflectance (SCE) in a region of the electroconductive filmwhere the electroconductive partis present is 0.5% or less, is provided.

Electroconductive film, sensor, touch panel, and image display device

Provided is an optical layered body which is extremely high in the stability of the antistatic performance, and has a stable surface resistance even after a durability test. The optical layered body includes an antistatic layer on one face of a light-transmitting substrate, wherein the antistatic layer is formed using a composition for an antistatic layer containing conductive fine particles, a resin component, and a solvent, and the resin component has no reactive functional groups in a molecule, and is soluble in the solvent and compatible with the conductive fine particles.

Optical layered body and image display device

One aspect of the present invention provides a foldable light-transmitting optical filmfor use in an image display device, which includes a resin base material, a hard coat layerprovided on the first surfaceA of the resin base material, and a resin layerhaving a film thickness of 50 &#x3bc;m or more and 300 &#x3bc;m or less and provided on the second surfaceB of the resin base materialthat is opposite to the first surfaceA, wherein the shear storage modulus (G') of the optical filmat 25&#xb0; C. in the frequency range from 500 Hz to 1000 Hz inclusive is more than 200 MPa and 1200 MPa or less, and the shear loss modulus (G&#x2033;) of the optical film at 25&#xb0; C. in the frequency range from 500 Hz to 1000 Hz inclusive is 3 MPa or more and 150 MPa or less.

Optical film and image display device

The present invention aims to provide a liquid crystal display device highly suppressing occurrence of rainbow interference pattern in displayed images. The present invention is a liquid crystal display device including: a back light source, a liquid crystal cell, a color filter, a polarizer, and a polarizer protective film arranged in the stated order, wherein the polarizer protective film has a retardation of not less than 6000 nm, and a difference (nx&#x2212;ny) of not less than 0.05 between a refractive index (nx) in a slow axis direction that is a highest refractive index direction and a refractive index (ny) in a fast axis direction that is orthogonal to the slow axis direction, and an absorption axis of the polarizer and the slow axis of the polarizer protective film are arranged to form an angle within a range of 0&#xb0;&#xb1;30&#xb0; or 90&#xb0;&#xb1;30&#xb0;.

Liquid crystal display device and polarizer protective film

One aspect of the present invention provides a foldable light-transmitting optical filmfor use in an image display device, comprising a resin base materialand a resin layerprovided on one surfaceA of the resin base material, wherein the shear storage elastic modulus (G') of the optical filmat 25&#xb0; C. in the frequency range from 500 Hz to 1000 Hz inclusive is 1 MPa or more and 200 MPa or less, and the shear loss elastic modulus (G&#x2033;) of the optical filmat 25&#xb0; C. in the frequency range from 500 Hz to 1000 Hz inclusive is 0.1 MPa or more and 100 MPa or less.

The present invention provides: an optical laminate comprising at least two films, the optical laminate comprising at least a film A satisfying a given condition (1) and a film C satisfying a given condition (2), wherein a retardation value Re(0) observed in a direction of an axis perpendicular to a plane of the optical laminate is 4,000 to 30,000 nm, and a retardation value Re(40) observed in a direction of an axis tilted from the axis perpendicular to the plane of the optical laminate toward a slow axis by 40 degrees in a plane lying perpendicular to the plane of the optical laminate and extending along the slow axis is 4,000 to 25,000 nm, the slow axis being an axis along which refractive index is highest in a plane of the film A; and a display device comprising the optical laminate.

Optical layered body and display device

The present invention provides a display device having excellent light energy conversion efficiency. The present invention relates to a display device including a light-diffusing layered body. The light-diffusing layered body includes a wavelength conversion layer containing optically isotropic semiconductor particles and a light-diffusing layer on at least one surface of the wavelength conversion layer. The light-diffusing layer contains a binder component and light-diffusing particles that contain an organic material or an inorganic material. The light-diffusing particles protrude in a range of 3 to 50% of the particle size of the light-diffusing particles from an outermost surface of the light-diffusing layer. The light-diffusing layer has projections and depressions on the outermost surface due to the light-diffusing particles protruding therefrom. The light-diffusing layer has a film thickness of 1 to 30 &#x3bc;m.

Display device

Provided is an antiglare film having a hard coat property, capable of highly suppressing generation of a rainbow interference pattern and interference fringes in display images, preventing white muddiness and scintillation of a display screen, while giving high contrast in a bright room and a dark room. The antiglare film includes an antiglare layer having an uneven form on its surface and formed on one face of a transparent substrate having an in-plane birefringence and a retardation of 3000 nm or higher. The antiglare layer contains silica fine particles, organic fine particles, and a binder resin. The silica particles include particles forming agglomerates to be contained coarsely and densely in the antiglare layer. The agglomerates are distributed densely around the organic fine particles, and some agglomerates adhere to surfaces of the organic particles and/or some silica particles are impregnated in the inside of the organic particles.

Antiglare film, polarizer and image display device

Provided is an optical layered body that includes a polyester base, a primer layer formed thereon, and a hard coat layer formed on the primer. The polyester has a retardation of not less than 8000 nm, and a difference (nx&#x2212;ny) of 0.07 to 0.20 between a refractive index (nx) in a slow axis direction that is a high refractive index direction and a refractive index (ny) of a fast axis direction that is orthogonal to the slow axis direction, a refractive index (np) of the primer, the refractive index (nx) in the slow axis direction of the polyester, and the refractive index (ny) in the fast axis direction of the polyester satisfy ny&#x3c;np&#x3c;nx, and a refractive index (nh) of the hard coat, the refractive index (nx) in the slow axis direction of the polyester, and the refractive index (ny) in the fast axis direction of the polyester satisfy ny&#x3c;nh&#x3c;nx.

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Tokyo, Japan

Seiichi Isojima