Viewing angle control element and method for fabricating the same

Abstract

Provided is a viewing angle control element that can eliminate the risk of the occurrence of a warp and deformation when the element is made thick in order to narrow the visible range or even if the environment of installation of the image display device becomes high in temperature, as well as a fabricating method of the same. The present invention is a sheet-like viewing angle control element 1 that is mounted on an entertainment monitor on the passenger side dashboard of the car, and includes: a louver layer in which a plurality of light-transmitting strips 3 and a plurality of light-shielding strips 4 are arrayed alternately; a pair of adhesive layers 5 laminated on both sides of the louver layer 2, respectively; and a pair of light-transmissive polycarbonate resin films 6 laminated and bonded respectively to the pair of adhesive layers 5. The light-transmitting strips 3 of the louver layer 2 are each formed from light-transmitting silicone rubber, while the light-shielding strips 4 of the louver layer 2 are formed from colored silicone rubber, and the width of the light-shielding strip 4 is to be 10 μm or more to 20 μm or less. Since the louver layer 2 is made of silicone rubber, the risk of a warp or deformation due to heat can be eliminated.

Dependencies are inferred from the claim text.