Alps Electric Co., Ltd.

Chie Chikira

Katsumasa Yoshii

A reflector is provided in a reflective or transmissive liquid crystal display device. In the reflector, when light is incident on the reflector in a first direction, a reflection characteristic profile of light reflected therefrom shows a reflectance distribution which is asymmetric with respect to a specular reflection angle of the incident light and shows a non-Gaussian distribution in which a maximum value of reflectance is within a reflection angle range smaller than the specular reflection angle of the incident light. In addition, when light is incident on the reflector in a second direction perpendicular to the first direction, a reflection characteristic profile of light reflected therefrom shows the non-Gaussian distribution, similar to the case in which the light is incident on the reflector in the first direction.

Reflector used in LCD devices having a plurality of convace portions each inner surface thereof having first and second flat surfaces perpendicular to respective first and second directions

A reflector having light diffusibility for suppressing a reflected image within a wide viewing angle range and having a particular brightness at a specific viewing angle range, and a reflective liquid crystal display device using the reflector, are provided. The reflectorcomprises a plurality of light-reflective concave portions, which are formed on a surface S of a substrate, wherein each of the concave portionsis formed with a first curved surface Alocated at one peripheral portion Sof the concave portionand a second curved surface Blocated at the other peripheral portion Sthereof, the deepest point Dis located on the first curved surface A, and the maximum value &#x3c3;bof the absolute value of the second curved surface Bto the surface S of the substrate is larger than that of the maximum value &#x3c3;aof the absolute value of the first curved surface Ato the surface S of the substrate.

Growing community of inventors

Fukushima-ken, Japan

Chie Chikira