Dai Nippon Printing Co., Ltd.

Nitto-Denko Corporation

Keio University

Nitto Jushi Kogyo Co., Ltd.

Runa Nakamura

Fumihiro Arakawa

Keiko Tazaki

Satoko Maenishi

Hiroshi Yamamoto

Tsuyoshi Ishikawa

Nao Murakami

Yasuhiro Koike

Hiroyuki Takemoto

Takehito Fuchida

Eizaburo Higuchi

Shouhei Maezawa

Hiroshi Kojima

Toshio Yoshihara

Yuichi Miyazaki

Satoshi Goishihara

Akinobu Ushiyama

Yuudai Yamashita

Takayuki Shimada

Akiko Tomita

Nobuaki Nakao

Kazuki Tanaka

Naoyuki Mitsuyasu

There is provided an optical sheet which can prevent problems when it is superimposed on another member. The optical sheet includes: a sheet-like base layer; a light control layer having unit shaped elements arranged in a direction parallel to a sheet surface of the base layer; and a light diffusing layer disposed between the base layer and the light control layer. The light diffusing layer includes a binder resin portion and particles dispersed in the binder resin portion. The particles in the binder resin portion includes a single particle and an aggregate formed of aggregated single particles.

Optical sheet, surface light source device and transmission type display device

A liquid crystal display apparatus includes a liquid crystal display panel including a liquid crystal cell between first second polarizing plates; and a surface light source device. The surface light source device includes a light source unit, a light guide plate for outputting first directivity light having directivity of maximum intensity in a first direction, which forms a predetermined angle from a normal direction of the light output surface in a plane approximately parallel to a light guiding direction of light, and having a high ratio of a polarized light component oscillating in the plane and a prism sheet being configured to convert the first directivity light into second directivity light directed in a second direction within a predetermined angle from the normal direction of the light output surface of the light guide plate while substantially maintaining a polarization state of the first directivity light.

Liquid crystal display apparatus

A liquid crystal display apparatus comprises: a liquid crystal display panel including a liquid crystal cell between a first polarizing plate and a second polarizing plate; and a surface light source device having a light source unit and a light guide plate. In a polarized light output from the light guide plate, when the normal direction of a light output surface is defined to be at a polar angle of 90&#xb0;, and the light guiding direction of the light guide plate is defined to be a direction of an azimuth angle of 0&#xb0;-180&#xb0;, a ratio La/Lt of integrated intensity La of output light in ranges where the polar angle is 50&#xb0; to 80&#xb0; and the azimuth angle is 135&#xb0; to 225&#xb0;, 0&#xb0; to 45&#xb0;, and 315&#xb0; to 360&#xb0; to integrated intensity Lt of total output light is 0.3 or more.

The pattern printed sheetof the present invention includes a substrateand a non-visible light-reflective transparent patternprinted on a surface of the substrate, wherein an ink for forming the transparent patterncontains a non-visible light-reflective material capable of selectively reflecting a light having a wavelength in a non-visible light range, and the transparent patternprinted on the surface of the substratehas a multilayer structure in section which is repeated at predetermined intervals as observed by a scanning electron microscope, and reflects only a circular polarization component in a predetermined rotation direction relative to an incident light applied thereto. The pattern printed sheet is usable as a coordinate detecting means which is applicable a data input system of a type capable of directly hand-writing input data on an image screen of a display device, and has a reduced weight and a low price, and is readily obtained in the form of a large area sheet and can be mass-produced.

Pattern printed sheet

A sheet-like optical member being difficult to damage a shape of a lens part. The sheet-like optical member includes: a substrate; and a lens part, which is formed on the substrate, is made of an active energy ray-curable resin, and has a plurality of unit prisms. The maximum logarithmic attenuation rate &#x394;E of the lens part measured by a rigid body pendulum method is 0.4 or less.

Sheet-like optical member, resin composition for optical sheet, optical sheet and method for producing the same

A film with alignment film which stably causes liquid crystal alignment and is excellent in adhesion between its constituting layers so as to give a high endurance and an excellent re-workability, and further to provide an optical device using the same. The film with alignment film contains at least a resin substrate and an alignment film, wherein the film is provided with a photocurable resin layer between the resin substrate and the alignment film, the photocurable resin layer being formed by use of a photo-cleaving type photopolymerization initiator. The optical device contains at least a resin substrate, an alignment film, and an optically functional layer, wherein the device is provided with a photocurable resin layer between the resin substrate and the alignment film, the photocurable resin layer being formed by use of a photo-cleaving type photopolymerization initiator.

Film with alignment film and optical device

The present invention provides an optical element capable of improving the adhesive property between a refractive index anisotropic layer and an alignment property providing layer for providing alignment property to the refractive index anisotropic layer and further improving the endurance of each of the layers.

Optical element and method for manufacturing the same

The present invention provides an optical element capable of improving the adhesion between the alignment property providing layer, for providing the alignment property to the refractive index anisotropic layer, and the refractive index anisotropic layer, as well as improving durability of each layer.

Growing community of inventors

Tokyo, Japan

Runa Nakamura