Zeon Corporation

Kenichi Harai

Hiroyasu Inoue

Taku Hatano

Satoshi Tazaki

Yasunori Ii

Toshihiko Hori

Kazuyuki Obuchi

Yasunori Il

An electroconductive film including a resin layer and an electroconductive layer, wherein the resin layer has a storage elastic modulus at 25&#xb0; C. of more than 10 MPa and less than 1,000 MPa, and the electroconductive layer has a surface resistance value of 1,000 &#x3a9;/sq. or less.

Electrically conductive film

A step of forming a layered body including a resin layer (a) containing a resin A having positive intrinsic birefringence and a resin layer (b) containing a resin B having negative intrinsic birefringence, the resin layer (b) being provided on one side of the resin layer (a); a first stretching step of stretching the layered body in one direction at a temperature T; and a second stretching step of, after the first stretching step, stretching the layered body in another direction that is approximately orthogonal to the previous stretching direction at a temperature Twhich is lower than the temperature Tto obtain a phase difference plate are performed. By these steps, a phase difference plate wherein a slow axis of the resin layer (a) after the stretching treatment and a slow axis of the resin layer (b) after the stretching treatment are approximately parallel to each other, and in-plane retardation Rea and NZ coefficient NZa in the resin layer (a) after the stretching treatment, and in-plane retardation Reb and NZ coefficient NZb in the resin layer (b) after the stretching treatment satisfy specific relationship is obtained.

Phase difference plate manufacturing method, phase difference plate, and liquid crystal display device

A laminate film including: a substrate film made of an alicyclic olefin resin; and a protection film made of an alicyclic olefin resin and disposed directly on one surface of the substrate film, wherein a surface of the substrate film on a side brought into contact with the protection film, or a surface of the protection film on a side brought into contact with the substrate film is a surface to which activation treatment is applied.

Laminated film, and method for manufacturing composite film

An optical laminate body including: a substrate; and an adhesive layer formed on substrate, wherein the optical laminate body is used such that a surface thereof on the adhesive layer side is attached to a glass-made light-emitting surface member, a relationship n3&#x2267;n2&#x2267;n1 is satisfied where n1 is a refractive index of the glass that constitutes light-emitting surface member, n2 is a refractive index of the adhesive layer, and n3 is a refractive index of the substrate, the adhesive layer is composed of an acrylic adhesive composition containing an acrylic resin (A), and the acrylic resin (A) is a copolymer of a copolymerizable component [I] containing 40% by weight to 93% by weight of an aromatic ring-containing monomer (a1), and 7% by weight to 60% by weight of a hydroxy group-containing monomer (a2), the weight average molecular weight of the acrylic resin (A) being 200,000 or less.

Optical laminate body and surface light source device

A step of forming a layered body including a resin layer (a) containing a resin A having positive intrinsic birefringence and a resin layer (b) containing a resin B having negative intrinsic birefringence, the resin layer (b) being provided on one side of the resin layer (a); a first stretching step of stretching the layered body in one direction at a temperature T1; and a second stretching step of, after the first stretching step, stretching the layered body in another direction that is approximately orthogonal to the previous stretching direction at a temperature T2 which is lower than the temperature T1 to obtain a phase difference plate are performed. By these steps, a phase difference plate wherein a slow axis of the resin layer (a) after the stretching treatment and a slow axis of the resin layer (b) after the stretching treatment are approximately parallel to each other, and in-plane retardation Rea and NZ coefficient NZa in the resin layer (a) after the stretching treatment, and in-plane retardation Reb and NZ coefficient NZb in the resin layer (b) after the stretching treatment satisfy specific relationship is obtained.

A light-emitting device having an organic EL element that has a light-emitting surface and emits light from the light-emitting surface, and a structure layer disposed directly or indirectly on the light-emitting surface. The structure layer has, on a surface thereof that is opposite to the organic electroluminescent element, a concavo-convex structure including a first streak array extending in a first direction that is parallel to the surface, a second streak array extending in a second direction that is parallel to the surface and intersects with the first direction, and a third streak array extending in a third direction that is parallel to the surface and intersects with the first direction and the second direction.

Light-emitting element

A light-emitting device comprising: an organic electroluminescence element that has a light-emitting surface and emits light from the light-emitting surface; and a structure layer that is provided directly or indirectly on the light-emitting surface of the organic electroluminescence element, wherein the structure layer has a concavo-convex structure on a surface of the structure layer, the surface being opposite to the organic electroluminescence element, the concavo-convex structure including a first streak array extending in a first direction that is parallel to the surface, a second streak array extending in a second direction that is parallel to the surface and intersects the first direction, and a third streak array extending in a third direction that is parallel to the surface and intersects the first direction and the second direction, the concavo-convex structure includes flat surface portions parallel to the light-emitting surface and an inclined surface portion that is inclined with respect to the light-emitting surface, and a projected area formed by projecting the inclined surface portion upon a plane parallel to the flat surface portions in a direction perpendicular to the flat surface portions is 0.1 times or less times a total area of the flat surface portions.

Light-emitting element and illuminating apparatus

A phase difference plate is manufactured by a method including a step of forming a multilayer body by co-extruding or co-casting a resin A having a positive intrinsic birefringence value and a resin B having a negative intrinsic birefringence value, the multilayer body including a layer 'a' containing the resin A and a layer 'b' containing the resin B; a step of stretching the multilayer body at a temperature Tin one direction; and a step of subsequently stretching the multilayer body at temperature Tlower than the temperature Tin a direction that is approximately orthogonal to the previous stretching direction. The resulting phase difference plate has specific in-plane retardation Rea of the layer &#x201c;a&#x201d;, retardation Rta in the thickness direction thereof, in-plane retardation Reb of the layer &#x201c;b&#x201d;, and retardation Rtb in the thickness direction thereof.

Wave plate, method for producing same, and liquid crystal display device

A surface light source device including an organic EL element of a double-side emission type and a light output surface structure layer provided on at least one surface of the organic EL element, wherein the light output surface structure layer includes a concavo-convex structure on a surface opposite to the organic electroluminescent element, the concavo-convex structure having flat surface portions parallel to the surface and an inclined surface portion tilted relative to the flat surface portions, and a projected area formed by projecting the inclined surface portion in a direction perpendicular to the flat surface portions onto a plane parallel to the flat surface portions is not more than 0.1 times a total area of the flat surface portions.

Surface light source device and lighting apparatus

The light output surface structure layer has a concavo-convex structure on a surface opposite to the organic EL element. The concavo-convex structure includes flat surface portions parallel to one surface of the organic EL element and an inclined surface portion tilted relative to the flat surface portions. The projected area which is formed by projecting the inclined surface portion in a direction perpendicular to the flat surface portions onto a plane parallel to the flat surface portions is equal to or less than 0.1 times the total area of the flat surface portions. On a cross section of a flat surface portion cut along a plane parallel to the width and thickness directions thereof, the ratio H/W is 1 or greater and 2.5 or less, where H and W are the height and the width thereof, respectively.

Light-emitting device and lighting apparatus

A surface light source device includes an organic electroluminescent element including a luminescent layer and a light-emitting surface structure layer disposed on one of the surfaces of the organic electroluminescent element. In the surface light source device, the light-emitting surface structure layer includes a concave-convex structure provided on a surface thereof on the side toward a device light-emitting surface, and the concave-convex structure includes a plurality of concave portions having oblique surfaces and flat portions disposed around the concave portions. The flat portions and/or the concave portions have a size difference in one or more of their width, height, depth, and spacing, the size difference being larger than the difference that causes interference of one or both of emitted light and reflected light.

Surface light source device, lighting device, and backlight device

An optical sheet comprising: a transparent substrate having a first surface Sand a second surface Sa first light diffusion layer provided on a first surface Sside of the transparent substrate; and a second light diffusion layer provided on a second surface Sside of the transparent substrate, wherein a haze x(%) of the first light diffusion layer and a haze x(%) of the second light diffusion layer satisfy f(x)/(f(x)+f(x))&#x2266;2/3 (where when x&#x2266;88, a function f(x)=1.9&#xd7;(ln(1&#x2212;x/90)), and when x&#x3e;88, the function f(x)=22.5x&#x2212;1952.5) and (f(x)+f(x))&#x2267;12; and a surface light source device having the same.

Growing community of inventors

Tokyo, Japan

Kenichi Harai