Zeon Corporation

Kyosuke Inoue

Tetsuya Toyoshima

Taku Hatano

Masanori Yoshihara

Hiromu Mashima

Kouhei Arakawa

Kazuyuki Obuchi

A phase difference film formed of a resin containing a polymer having crystallizability, wherein:

Phase contrast film and production method therefor

A long-length film formed of a resin containing a polymer having crystailizability, wherein the long-length film has an orientation axis perpendicular to a long side direction of the long-length film, the long-length film has an Nz factor Nz1 satisfying (formula 1), the long-length film has a birefringence &#x394;n satisfying (formula 2), and the polymer has a crystallization degree X satisfying (formula 3):1.0&#x2264;Nz1&#x2264;1.15&#x2003;&#x2003;(formula 1)0.01&#x2264;&#x394;n&#x2264;0.1&#x2003;&#x2003;(formula 2)15%&#x2264;X&#x2003;&#x2003;(formula 3).

Long film and method for producing same

An optical layered body including: a substrate layer formed of a resin containing a crystallizable polymer A; and a first surface layer formed of a resin containing an amorphous polymer B, wherein a glass transition temperature TgA of the crystallizable polymer A and a glass transition temperature TgB of the amorphous polymer B satisfy TgB&#x3e;TgA, a crystallization temperature TcA of the crystallizable polymer A and the glass transition temperature TgB of the amorphous polymer B satisfy TcA&#x2212;10&#xb0; C.&#x2265;TgB&#x2265;TcA&#x2212;60&#xb0; C., the first surface layer has a plane orientation coefficient P that satisfies P&#x2264;0.01, and a ratio of a thickness of the substrate layer relative to a total thickness of the optical layered body is 25% or more.

Optical laminate, method for producing same, polarizing plate, and display device

Having a layer B formed of a resin 'b' having a negative intrinsic birefringence value; and layers A formed of a resin 'a' having a positive intrinsic birefringence value and formed on both surfaces of the layer B, wherein the resin &#x201c;b&#x201d; includes a styrene-based polymer, the resin &#x201c;a&#x201d; includes a polycarbonate, and a difference in average refractive index between the resin &#x201c;b&#x201d; and the resin &#x201c;a&#x201d; is 0.01 or more.

Multilayered film and method of manufacturing multilayered film

Provided are a polarization plate which has a high mechanical strength, which does not impair a visibility even under a high temperature and high humidity, which is excellent in flexibility and abrasion resistance, and which reduces a visible disturbance such as color unevenness due to a size change, as well as a liquid crystal display device using the polarization plate. A film composed of a plurality of layers composed mainly of thermoplastic resins is used as a first protection film used for a visible side of the polarization plate, and at least one surface layer of this first protection film is composed mainly of an acrylic resin. Furthermore, a second protection film having a specific property is disposed at a side of a liquid crystal cell.

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Tokyo, Japan

Kyosuke Inoue