Fujifilm Corporation

Satoshi Kuniyasu

Tatsuya Oba

Ryosuke Shimizu

Mitsuyoshi Ichihashi

Takahiro Hayashi

Tamotsu Saikawa

Hirofumi Toyama

Tetsuya Asakura

Masayuki Kusumoto

Yoshiki Sugai

Takayuki Sano

The present disclosure provides a cholesteric liquid crystal film including a first cholesteric liquid crystal layer having a stripe pattern in which dark portions and bright portions, which are observed with a microscope, are alternately arranged and a second cholesteric liquid crystal layer which is disposed in contact with the first cholesteric liquid crystal layer and has a stripe pattern in which dark portions and bright portions, which are observed with a microscope, are alternately arranged, in which, at an interface between the first cholesteric liquid crystal layer and the second cholesteric liquid crystal layer, the dark portions observed in the second cholesteric liquid crystal layer is connected to the dark portions observed in the first cholesteric liquid crystal layer.

Cholesteric liquid crystal film

An object of the present invention is to provide a heat dissipation sheet having an excellent heat dissipation property and a heat dissipation sheet-attached device in which the heat dissipation sheet is used. The heat dissipation sheet of the present invention contains a resin binder, and inorganic particles, in which the inorganic particles include at least inorganic particles B having a particle diameter of more than 100 μm, and an average height Rc of each of one and the other surfaces of the heat dissipation sheet is 0.1 μm or more and less than 2.0 μm.

Heat dissipation sheet and heat dissipation sheet-attached device

The present disclosure provides a transparent screen including two main surfaces, and out of light of which a wavelength incident on one main surface out of the two main surfaces is 532 nm, a half width of a peak observed in a distribution indicating strength with respect to a diffraction angle of a primary diffraction light emitted from the other main surface out of the two main surfaces is 2 degrees or greater.

Transparent screen

A plant growth lighting fixture includes a lighting fixture main body having a light exit surface, a light source held on the lighting fixture main body, and a reflective-type circularly polarizing film that selectively reflects circularly polarized light having a particular rotational direction. The reflective-type circularly polarizing film is releasably affixed to the light exit surface of the lighting fixture main body.

Plant growth lighting fixture

A plant growth lighting fixture has two or more of a blue light source, a green light source, and a red light source and a reflective-type circularly polarizing plate having two or more of a blue-reflecting cholesteric liquid crystal layer having a center wavelength of an effective wavelength range in blue light, a green-reflecting cholesteric liquid crystal layer having a center wavelength of an effective wavelength range in green light, and a red-reflecting cholesteric liquid crystal layer having a center wavelength of an effective wavelength range in red light. The wavelength ranges of the emission center wavelengths as the light sources and the wavelength ranges of the center wavelength of the effective wavelength range as the reflective-type circularly polarizing plate are wavelength ranges of the same colors, and the reflective-type circularly polarizing plate has a polarization correction layer having a phase difference in a thickness direction.

A plant growth lighting fixture includes a lighting fixture main body having a light exit surface, a light source held on the lighting fixture main body, and a reflective-type circularly polarizing plate that selectively reflects circularly polarized light having a particular rotational direction in a particular wavelength range. The reflective-type circularly polarizing plate has a support and a circularly polarized light reflecting layer held on the support. The lighting fixture main body has a holding mechanism for detachably mounting the reflective-type circularly polarizing plate with a main surface of the reflective-type circularly polarizing plate facing the light exit surface.

Provided is a thin wavelength conversion film in which a phosphor can be uniformly dispersed and deterioration of the phosphor caused by oxygen can also be prevented; and a backlight unit including the wavelength conversion film. The wavelength conversion film includes a wavelength conversion layer and a substrate, in which the wavelength conversion layer includes a binder and particles including a phosphor, an oxygen permeability coefficient of the binder is 0.01 (cc&#xb7;mm)/(m&#xb7;atm) or lower, an oxygen permeability coefficient of the matrix is 10 to 1000 (cc&#xb7;mm)/(m&#xb7;day&#xb7;atm), and a content of the particles in the wavelength conversion layer is 3 to 30 vol %.

Wavelength conversion film and backlight unit

Provided is a wavelength conversion film that suppresses a deterioration of quantum dots by oxygen and is capable of suppressing a decrease in brightness. The wavelength conversion film includes a wavelength conversion layer and auxiliary layers sandwiching the wavelength conversion layer, in which the wavelength conversion layer has polyvinyl alcohol and cured substance particles of a (meth)acrylate compound including wavelength conversion particles, and an oxygen permeability of the auxiliary layer is 1.0&#xd7;10to 1.0&#xd7;10cc/(m&#xb7;day&#xb7;atm).

Wavelength conversion film

An object of the present invention is to provide a backlight film that uses a wavelength conversion film used for a liquid crystal display or the like, has satisfactory durability, and is able to emit light without color unevenness. The object is achieved by including a wavelength conversion film having a wavelength conversion layer and a gas barrier film that sandwich the wavelength conversion layer; and at least one reflective layer provided on one main surface of the wavelength conversion film and causing a film thickness distribution of the reflective layer to be &#xb1;5% or less.

Backlight film

The wavelength conversion laminated film includes a laminate which has a wavelength conversion layer containing a phosphor and a gas barrier layer laminated on both the main surfaces of the wavelength conversion layer and an end face sealing layer which covers at least end faces of the wavelength conversion layer among end faces of the laminate, in which the end face sealing layer includes, from the side of the end faces of the laminate, a first metal layer coming into contact with the end faces, a resin layer, and a second metal layer in this order.

Wavelength conversion laminated film

Even in the case where a coating liquid is applied onto an inorganic vapor-deposited film deposited on a support in advance, it is possible to effectively prevent cissing with a simple configuration and no increase in thickness of a product. A coating liquid preparation apparatus for preparing a coating liquid containing an actinic ray curable component, a coating apparatus for applying the coating liquid onto an inorganic vapor-deposited film deposited on a belt-like support in advance to form a coating, a first irradiation apparatus for irradiating the coating with an actinic ray, and a drying apparatus for drying the coating irradiated are provided in this order, and in the first irradiation apparatus, irradiation with an actinic ray is made in a state where the coating is wet, to place the curing rate of the curable component in the coating in a range of 10 to 80%.

Method for producing film with coating

A method of manufacturing a film with a coating layer includes a preparing step of preparing a coating liquid containing one or more photopolymerization initiator, a solvent, an actinic-ray curable monomer, and an actinic-ray curable resin, an applying step of applying the coating liquid onto a support to form a coating layer; and a irradiation step of irradiating the coating layer with an actinic ray, wherein in the irradiation step, the coating layer is irradiated with the actinic ray in a state where the coating layer contains the solvent of 10 wt % or more.

Method of manufacturing film with a coating layer

The method for producing an optical film includes a step of preparing a first coating liquid containing a certain amount of light-transmitting particles, a resin, and a solvent, a second coating liquid containing an amount less than the certain amount of light-transmitting particles, a resin, and a solvent, or not containing the light-transmitting particles but containing a resin and a solvent; a step of coating the second coating liquid and the first coating liquid in this order from the support side on a traveling band-shaped support in the form of a multilayer to form a second coating film and a first coating film; a step of transferring the light-transmitting particles in the first coating film to the side of the second coating film while drying the first coating film and the second coating film.

Method for producing optical film

The tip of a downstream lip is disposed so as to be further separated from a web as compared to the tip of an adjacent lip, and downstream and upstream spacers are placed so that the a liquid discharge port length interposed between two downstream spacers is shorter than that of a liquid discharge port interposed between two upstream spacers. The method includes coating coating-liquid to the surface of the web from a slot die, which is formed so that tips of the downstream spacers are placed at the same position as a tip of the adjacent lip or further protrude so as to be closer to the web than the tip of the adjacent lip; depressurizing the cover inside that is provided on the upstream side of the slot die during the coating; and drying the coating-liquid that is coated to the surface of the web.

Growing community of inventors

Kanagawa, Japan

Satoshi Kuniyasu