Fujifilm Corporation

Hiromoto Haruta

Nobutaka Fukagawa

Yutaka Nozoe

Hiroaki Sata

Osamu Takahashi

Aiko Yoshida

Tadashi Omatsu

Kunihiro Atsumi

Mitsuyoshi Ichihashi

Masaki Okazaki

Katsumi Sasata

Osamu Uchida

Hirofumi Toyama

Koju Ito

Masaya Suzuki

Takashi Murooka

Tomohiro Ogawa

A method of producing a cellulose derivative film, the method comprising: forming a film with a solvent cast method from a dope including a cellulose derivative satisfying following conditions (a) and (b): (a) at least one among three hydroxyl groups included in a glucose unit of cellulose is substituted by a substituent of which a polarizability anisotropy &#x394;&#x3b1; represented as following Expression (1) is 2.5&#xd7;10cmor higher: Expression (1): &#x394;&#x3b1;=&#x3b1;x&#x2212;(&#x3b1;y+&#x3b1;z)/2, wherein &#x3b1;x, &#x3b1;y and &#x3b1;z is as defined in the specification; and (b) when a substitution degree by a substituent of which &#x394;&#x3b1; is 2.5&#xd7;10cmor higher is P, and a substitution degree by a substituent of which &#x394;&#x3b1; is lower than 2.5&#xd7;10cmis P, the Pand Psatisfy following Expressions (3) and (4): Expression (3): 2P+P&#x3e;3.0; and Expression (4): P&#x3e;0.2.

Cellulose acylate film, method of producing the same, cellulose derivative film, optically compensatory film using the same, optically-compensatory film incorporating polarizing plate, polarizing plate and liquid crystal display device

A cellulose derivative film having high optical isotropy over the whole visible region and high durability against high temperature and humidity conditions is provided. The film contains a cellulose derivative having a substituent the polarizability anisotropy &#x394;&#x3b1; (=&#x3b1;x&#x2212;(&#x3b1;y+&#x3b1;z)/2) of which is 2.5&#xd7;10cmor more, and the film has an in-plane retardation Re and a thickness direction retardation Rth satisfying the respective inequalities: |Rth(589)|&#x2266;25 nm and |Re(589)|&#x2266;10 nm. Also provided are an optical compensation film, a polarizing plate, and a liquid crystal device that use the cellulose derivative film and exhibit excellent viewing angle characteristics and durability.

Cellulose derivative film, optical compensation film, polarizing plate, and liquid crystal device

An optical resin film is provided, in which a wavelength dispersion of a retardation in planar direction and a wavelength dispersion of a retardation in thickness direction are independently controlled, is provided and has at least an additive having a negative intrinsic birefringence.

Optical resin film, optical compensation sheet, polarizing plate and liquid crystal display

A liquid crystal display device comprising a liquid crystal cell and two polarizing plates disposed on the both sides thereof, wherein a protective film satisfying the specific conditions of retardation is sandwitched each between the liquid crystal cell and the polarizing plates. The liquid crystal display device can be easily produced at low costs and has a low viewing angle dependency of color.

Liquid crystal display device

A polymer film, wherein when any point in the polymer film is taken as a center, a maximum difference between high and low film thicknesses within a range of 60 mm diameter is not more than 1 &#x3bc;m, an RMS value of a film thickness is 0 &#x3bc;m to 0.15 &#x3bc;m or a difference between maximum and minimum values of slow axis angle in any 60 mm&#xd7;60 mm square in the polymer film is 0&#xb0; to 0.40&#xb0;; and a solution casting film-forming method comprising: casting a dope on a support; peeling the casted film, wherein a dry wind of 3 m/s to 15 m/s is applied to the casted film within 15 seconds from the casting, and wherein before the dry wind is applied to the casted film, an air floating on a surface of the casted film has a wind velocity of less than 3 m/s.

Polymer film, cyclic polyolefin film, method for manufacturing the same, optical compensation film, polarizer and liquid crystal display device

An optical film comprising a layer consisting mainly of an organic compound and a layer containing inorganic fine particles wherein a content of the organic compound having a molecular weight of 1000 or less is 30% by mass or less based on a content of the inorganic fine particles. The optical film exhibits a low haze and a high contrast when being assembled into a liquid crystal display device.

Optical film, method of producing the same, optical compensatory film, polarizing film, and liquid crystal display device

An optical compensation sheet is provided and has a stretched polymer film or stretched cellulose acylate film and at least one optical anisotropic layer containing a liquid crystal compound, and has retardations satisfying the specific relationships defined in the specification.

Optical compensation sheet, polarizing plate and liquid crystal display

A liquid crystal display device comprising a liquid crystal cell, two polarizing plates having a polarizer and a protective film satisfying (1) and (2) below, and an optical compensatory film satisfying (3)-(8) below and disposed between the liquid crystal cell and the polarizer:0 nm&#x2266;Re(&#x3bb;)&#x2266;5 nm&#x2003;&#x2003;(1)&#x2212;20 nm&#x2266;Rth(&#x3bb;)&#x2266;20 nm&#x2003;&#x2003;(2)20 nm&#x3c;Re(548)&#x3c;150 nm&#x2003;&#x2003;(3)50 nm&#x3c;Rth(548)&#x3c;400 nm&#x2003;&#x2003;(4)0.5&#x3c;Re(446)/Re(548)&#x3c;1&#x2003;&#x2003;(5)1.0&#x3c;Re(628)/Re(548)&#x3c;2.0&#x2003;&#x2003;(6)1.0&#x3c;Rth(446)/Rth(548)&#x3c;2.0&#x2003;&#x2003;(7)0.5&#x3c;Rth(628)/Rth(548)&#x3c;1.0&#x2003;&#x2003;(8).

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Minami-ashigara, Japan

Hiromoto Haruta