Lintec Corporation

Tatsuki Kuramoto

Kentaro Kusama

Baku Katagiri

Tetsuya Arazoe

A reflective display body configured such that the up-down direction of display content on a display surface can be changed. The reflective display body includes a light diffusion control layer, a display device, and a reflective layer. The light diffusion control layer has a diffusion angle width of 5° or more and 80° or less in which a haze value (%) is 90% or more as measured when one surface of the light diffusion control layer is irradiated with light rays at an incident angle of −70° to 70° with respect to the normal direction of the one surface being 0°. The light diffusion control layer has an acute angle of 7° or more and 83° or less.

Reflective display body and roll body of light diffusion control sheet

A light diffusion control body includes at least two light diffusion control layers each having a regular internal structure. The regular internal structure includes a plurality of regions having a relatively high refractive index in a region having a relatively low refractive index. The at least two light diffusion control layers includes a first light diffusion control layer and a second light diffusion control layer each having a minimum value of a haze value of 35% or more. The haze value is measured when one surface of each of the first light diffusion control layer and the second light diffusion control layer is irradiated sequentially with a light ray at an incident angle of −70° to 70° with respect to the normal direction of the surface being 0°.

Light diffusion control body and reflective display body

An external light use type display body including: a light diffusion control layer; a display layer; and a reflective layer. The light diffusion control layer has a regular internal structure that comprises a plurality of regions having a relatively high refractive index in a region having a relatively low refractive index. The reflective layer has a patterned indented structure when at least one cross section cut in a thickness direction is viewed. When the entrance plane is irradiated with light rays that travel on the light ray traveling plane with a predetermined incident angle while being scanned along an intersection line of the light ray traveling plane and the entrance plane, the ratio of the light rays satisfying the following Formula (1) or Formula (2) is 50% or more.&#x3b8;&#x3c;&#x3b8;&#x2264;&#x3b8;&#x2264;&#x3b8;&#x2003;&#x2003;(1)&#x3b8;&#x2264;&#x3b8;&#x2264;&#x3b8;&#x3c;&#x3b8;&#x2003;&#x2003;(2)

External light use type display body

A laminate used under an environment irradiated with external light includes a light diffusion control film having an internal structure in the film. The internal structure includes a plurality of regions having a relatively high refractive index in a region having a relatively low refractive index. The laminate further includes an ultraviolet absorbing layer located further on the external light incident side than the light diffusion control film. The light diffusion control film contains a hindered amine-based compound.

Laminate and light diffusion control film

A light diffusion control member includes a first light diffusion control layer and a second light diffusion control layer. The first light diffusion control layer and the second light diffusion control layer each has a regular internal structure that includes a plurality of regions having a relatively high refractive index in a region having a relatively low refractive index. The first light diffusion control layer and the second light diffusion control layer are laminated so that an angle between two respective vectors determined based on the regular internal structure in the first light diffusion control layer and the second light diffusion control layer is more than 0&#xb0; and 90&#xb0; or less.

Light diffusion control member and reflective display body

A laminate used under an environment irradiated with external light includes a light diffusion control film having an internal structure in the film. The internal structure includes a plurality of regions having a relatively high refractive index in a region having a relatively low refractive index. The laminate further includes an ultraviolet absorbing layer located further on the external light incident side than the light diffusion control film. The light diffusion control film has an indentation elastic modulus of 30 MPa or more as measured at a maximum load of 2 mN by a nanoindentation method.

A light diffusion film having an internal structure in the film. The internal structure includes a plurality of regions having a relatively high refractive index in a region having a relatively low refractive index. The light diffusion film has an indentation elastic modulus of 30 MPa or more at 23&#xb0; C.

Light diffusion film comprising an indentation elastic modulus of 30 MPa or more at 23 degrees Celsius throughout an entirety of the light diffusion film

In various embodiments, the present invention is directed to an interior-light-utilizing display obtained by laminating a reflection structure and a light diffusion film, in which the light diffusion film has an internal structure including a plurality of regions having a relatively high refractive index in a region having a relatively low refractive index in the film. The interior-light-utilizing display provides improved luminance and is capable of stably maintaining constant display characteristics even where the incident angle of the external light changes.

Interior-light-utilizing display

A reflective display body includes a light diffusion control layer and a reflective layer. The light diffusion control layer has a plurality of regions having a relatively high refractive index in a region having a relatively low refractive index. The regions having the relatively high refractive index extend from one surface side toward the other surface side of the light diffusion control layer, and a straight line parallel to the extending direction is tilted with respect to the thickness direction of the light diffusion control layer. When a vector C is obtained by projecting a vector, which is parallel to the extending direction and directed from the surface side distal to the display surface of the reflective display body toward the display surface side, onto the display surface, the smallest angle among three angles between vector C and vectors Dto Dis more than 0&#xb0; and 45&#xb0; or less.

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Tokyo, Japan

Tatsuki Kuramoto