Tomoegawa Co., Ltd.

Sharp Kabushiki Kaisha Corporation

Japan Display Inc.

Toppan Inc.

Hiroto Katagiri

Masahide Sugiyama

Akira Sakai

Masahiro Hasegawa

Kensaku Higashi

Hiroyuki Abe

Masaya Tamaki

Tatsuya Yata

Masashi Mitsui

Yoko Fukunaga

Norihiro Arai

Ayumu Sato

Tsubasa Sakano

Makoto Murata

Masao Kato

Yasuhiko Motoda

Kunpei Kobayashi

Kazuhiko Oosawa

Yusuke Takechi

An optical member including a polarizing plate having an absorption axis and a transmission axis which are orthogonal to each other, a reflective polarizing plate having a reflection axis and a transmission axis which are orthogonal to each other, and an optical anisotropic diffusion layer which is provided between the polarizing plate and the reflective polarizing plate and whose linear transmittance varies according to an incident light angle.

Optical member and liquid crystal display device

Provided is a light diffusion film laminate for a reflective display device which is capable of reducing the change in the brightness of the image without reducing the visibility not only from a predetermined observation position (for example, the front direction of the screen), but also from a slightly inclined direction from the predetermined observation position (for example, the front direction of the screen), thereby having excellent display characteristics, and a reflective display device including the light diffusion film laminate.

Light diffusion film laminate for reflective display device and reflective display device including the same

Provided is an anisotropic optical film, which can, while keeping excellent display characteristics (e.g., brightness and contrast) in the direction of a viewing angle, suppress decreased display characteristics in the other directions, when the anisotropic optical film is used as a diffusion film of a display panel. In an anisotropic optical film including two or more anisotropic light diffusion layers where the linear transmittance varies depending on the incident angle of incident light, each of the anisotropic light diffusion layers is provided with a matrix region and a plurality of pillar regions that differ in refractive index from the matrix region, the film includes, as the anisotropic light diffusion layers, at least two types of anisotropic light diffusion layers (a) and (b) that differ in linear transmittance, the maximum linear transmittance of the anisotropic light diffusion (a) is 40% or more and less than 95%, and the minimum linear transmittance thereof is less than 20%, and the maximum linear transmittance of the anisotropic light diffusion layer (h) is 20% or more and less than 40%, and the minimum linear transmittance thereof is less than 20%.

Anisotropic optical film

Provided is a display apparatus which has a sufficient luminance even when viewed at a large viewing angle, and which can overcome a problem of color change. The display apparatus is a display apparatus including a display device showing a color change in accordance with viewer's viewing angle, and an anisotropic optical film having a diffusing property changed in accordance with the incident angle of light radiated thereinto. The anisotropic optical film has at least one scattering central axis, and an angle made between the scattering central axis and a direction along which the display device shows a minimum color change is from 20 to 65&#xb0;, or &#x2212;20 to &#x2212;65&#xb0;.

Display apparatus

An anisotropic scatterer is configured to allow a scattering characteristic of light in a display region of a display device to have an angle dependence, and is configured to change the scattering characteristic of the light continuously in an in-plane direction.

Display device and anisotropic scatterer

To provide a display which can improve viewing angle dependency of a contrast ratio at least in a specific azimuth without design change of a basic structure of a display element, limitation to white display state or black display state, and deterioration in display quality in other directions. The above-mentioned display is a display comprising: a display element with a contrast ratio dependent on a viewing angle; and an anisotropic scattering film having an anisotropic scattering layer, wherein the anisotropic scattering film is located on a viewing screen side of the display element and has a scattering central axis in substantially the same azimuth as an azimuth in which a contrast ratio of the display element in a direction inclined by a certain angle from a normal direction of a viewing screen of the display element has an extreme value.

Display

The invention aims at providing a display which can improve viewing angle dependency of contrast ratio in a wide azimuth without changing design of a basic structure of a display element, impairing display quality in a direction showing large contrast ratio and being limited to a state of displaying white or black. The aim is attained by a display comprising: a display element having viewing angle dependency of contrast ratio; and an anisotropic scattering film having an anisotropic scattering layer, wherein the anisotropic scattering film has a scattering central axis approximately parallel to a direction showing the largest contrast ratio of the display element and is located on a viewing screen side of the display element.

Anisotropic scattering film for improving the viewing angle dependency of a liquid crystal display

Growing community of inventors

Shizuoka, Japan

Hiroto Katagiri