Zeon Corporation

Asahi Glass Company, Limited

Nippon Zeon Company, Ltd.

Other

Toshihide Murakami

Tsunehiko Sugawara

Teiji Kohara

Tadao Natsuume

Kohei Arakawa

Satoshi Yamada

Yusuke Kobayashi

Kentaro Tatsukoshi

Yasunori Ii

Teruhiko Suzuki

Tadahiro Ohmi

Yasuo Tsunogae

Mitsugu Uejima

Masahiko Hayashi

Haruhiko Takahashi

Tsutomu Nagamune

Akiyoshi Shibuya

Masayoshi Oshima

Naoya Shimizu

Toshikazu Ikezawa

Naoki Tanahashi

Megumi Fujita

Naoki Morihiro

Mitsushi Tada

Toshihiko Jimbo

Hidehiro Ito

Hana Abe

Takao Kuwashima

Katsuhiro Kurosaki

Provided is a phase difference film formed of a resin containing a polymer having crystallizability. The phase difference film has an NZ factor of less than 1 and an in-plane retardation Re that satisfies 125 nm&#x2264;Re&#x2264;345 nm. The polymer has a crystallization degree of 15% or more. Alternatively, the polymer is an alicyclic structure-containing polymer being a hydrogenated product of a ring-opening polymer of dicyclopentadiene.

Phase difference film and production method for the same

Provided is a phase difference film formed of a resin containing a polymer having crystallizability, and having an NZ factor of less than 1. A production method of the phase different film includes: bonding a second film to one or both surfaces of a first film formed of a resin containing the polymer having crystallizability and having a glass transition temperature Tg (&#xb0; C.) and a melting point Tm (&#xb0; C.), to obtain a third film, the second film having a shrinkage percentage in at least one direction at (Tg+30)&#xb0; C. of 5% or more and 50% or less; heating the third film to Tg&#xb0; C. or higher and (Tg+3)&#xb0; C. or lower to obtain a fourth film; and heating the fourth film to (Tg+50)&#xb0; C. or higher and (Tm&#x2212;40)&#xb0; C. or lower.

A resin film formed of a resin containing a polymer containing an alicyclic structure and having crystallizability, wherein a crystallization degree of the polymer is 30% or more, and a thickness variation Tv of the resin film represented by the following formula (1) is 5% or less. The formula (1) is Tv [%]=[(Tmax&#x2212;Tmin)/Tave]&#xd7;100. In the formula (1), Tmax is a maximum value of the thickness of the resin film, Tmin is a minimum value of the thickness of the resin film, and Tave is an average value of the thickness of the resin film).

Resin film, barrier film, and electrically conductive film, and production methods therefor

An electroconductive film including a substrate film, and an organic electroconductive layer disposed on the substrate film, wherein the substrate film is formed of a resin containing an alicyclic structure-containing polymer having crystallizability, a thickness of the substrate film is 5 &#x3bc;m or more and 50 &#x3bc;m or less, and a crystallization degree of the alicyclic structure-containing polymer having crystallizability is 30% or more. The alicyclic structure-containing polymer having crystallizability is preferably a hydrogenated product of a ring-opening polymer of dicyclopentadiene.

Conductive film and method for producing same

Provided is a barrier film including a resin film and a barrier layer provided on the resin film. Also provided is an electroconductive film including a resin film and an electroconductive layer provided on the resin film. The resin film is formed of a resin containing an alicyclic structure-containing polymer having crystallizability. An absolute value of a thermal size change ratio when the resin film is heated at 150&#xb0; C. for 1 hour is 1% or less in any in-plane direction of the resin film.

Resin film, barrier film, electrically conductive film, and manufacturing method therefor

Provided is a resin film having excellent size stability in a high-temperature environment. A resin film formed of a resin containing an alicyclic structure-containing polymer having crystallizability, wherein an absolute value of a thermal size change ratio when the film is heated at 150&#xb0; C. for 1 hour is 1% or less in any in-plane direction of the film. The alicyclic structure-containing polymer may preferably be a hydrogenated product of a ring-opened polymer of dicyclopentadiene. Also provided is a method for producing the resin film including a step of relaxing strain of the crystallized film while the crystallized. film is kept flat.

An optical layered body including: a substrate layer; a first adhesive layer disposed on one surface of the substrate layer; and a second adhesive layer disposed on an opposite surface of the first adhesive layer to the substrate layer, wherein the second adhesive layer includes particles that are capable of scattering light, and a refractive index nof the first adhesive layer and a refractive index nof the second adhesive layer satisfy1.40&#x2266;1&#x2266;1.50,1.47&#x2266;2&#x2266;1.85, and0&#x3c;2&#x2212;1&#x2266;0.45.

Optical layered body and surface light source device

A lengthy grid polarizer film comprising a lengthy resin film and a plurality of grid lines provided on the surface and/or inside of the resin film and extending substantially in parallel with each other are provided, the grid lines being made of a material G being 1.0 or more in the absolute value of the difference between the real part nand the imaginary part &#x3ba;of the complex refractive index (N=n&#x2212;i&#x3ba;), said resin film having a plurality of rows of grooves formed extending substantially in parallel with each other on its surface, and said grid line being made of a thin film of the laminated material G on the bottom face of the grooves and/or on the top face of ridges located between the adjacent grooves. A lengthy optical laminated body comprises the lengthy grid polarizer film and another lengthy polarizing optical film.

Grid polarizing film, method for producing the film, optical laminate, method for producing the laminate, and liquid crystal display

A container for precision substrate having one or more component formed by molding a thermoplastic resin, characterized in that the component satisfies characteristics [1] and [2] below. [1] When being brought to contact ultra high purity argon gas (impurity concentration: 1 ppb or less) at 25&#xb0; C. having a flow rate of 1.2 L/min., a water amount in said argon gas after 300 minutes is 30 ppb or less per a surface area 1 cmof the component. [2] When being placed in the air at 100&#xb0; C., an increase amount of organics in the air in 300 minutes is 150 ng or less per weight 1 g of the component. According to the container, demands for low contamination can be satisfied.

Container for precision substrate

An optical laminate film comprising a layer (A) comprising a material having a negative intrinsic birefringence value as a primary component; and a layer (B) comprising a transparent resin as a primary component which is laminated to at least one side of the layer (A). The optical laminate film satisfies the following conditions:

Optical laminate film and method for producing same

Provided are: a long optical laminate prepared by laminating two obliquely stretched long phase-difference films so that the respective delayed-phase axes cross each other at a specified angle, while at least one of the two phase-difference films is a film containing residual volatile component by 1000 ppm or less; a long optical element prepared by laminating the optical laminate on one surface of polarization film; a long broad-band &#xbc; wavelength plate; an optical member prepared by laminating a circularly polarized light separating layer of cholesteric liquid crystal on one surface of the broad-band &#xbc; wavelength plate; a broad-band circular element using the broad-band &#xbc; wavelength plate; and an optical product having the broad-band circular polarization element. The invention provides long optical laminates having high optical characteristics stability, long broad-band &#xbc; wavelength plates, long optical elements, broad-band circular polarization elements, and various optical products having the broad-band circular polarization element.

Optical laminate

The present invention has an object to provide a glass funnel, which is safe, highly reliable and lightweight. The object is solved by a glass funnel wherein an outwardly projecting bent portion is provided along at least a part of an outer peripheral area, where the body portion intersects with a plane perpendicular to a bulb axis, and which includes intersecting points between the outer peripheral area and a plane containing a diagonal axis and the bulb axis, and the bent portion is provided at a specific position.

Glass funnel for a cathode ray tube and cathode ray tube

A glass bulb for a color cathode ray tube, which comprises a panel, a funnel connected to the panel and a neck, the panel comprising a face portion and a skirt portion constituting a side wall of the face portion and having a seal edge portion at the end portion, wherein such a compressive stress &sgr; that 50 MPa&lE;&verbar;&sgr; &verbar;&lE;250 MPa is produced by an ion-exchange method to at least one of short axis end portions and long axis end portions on the outer surface of the face portion; the average thickness t&equals;(t &plus;t )/2 of the face portion represented by the central thickness t of the face portion and the maximum thickness t of the face portion, and the thickness t at the seal edge portion, satisfy the relation t/t &lE;1.4; and the maximum value &sgr; of the tensile stress generated at the face portion when vacuumized is 20 MPa&lE;&sgr; <200 MPa.

Glass bulb for a color cathode ray tube, and color cathode ray tube

A glass bulb for a cathode ray tube includes a panel and a funnel sealed to each other at respective seal edge portions to form a sealing portion. The panel includes a face portion with a substantially rectangular screen, and a skirt portion constituting a sidewall of the face portion and having a seal edge portion at its end. The funnel is connected to a cylindrical neck portion for housing an electron gun. A distance H from the center of the inner surface of the face portion to a point where a reference line of the funnel crosses the bulb's central axis, and the diagonal length D of the screen, satisfy D/H&gE;3.3. A bent portion bending towards the bulb's central axis is provided at least on a long side of the sealing portion.

Growing community of inventors

Tokyo, Japan

Toshihide Murakami