Viewing angle controlling system, and image display device using the same
AssigneeNitto Denko Corporation
InventorSeiji UMEMOTO
Life of this patent
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Abstract
There are provided a viewing angle controlling system which can be used in a display device for which peep-prevention and viewing-angle-control are required, and makes it possible to control the viewing angle of a display, and an image display device using the same. The viewing angle controlling system includes: a first polarizer and a second polarizer which are each in the form of a film comprising an absorption dichroic material. The first polarizer has an absorption axis in its film plane, and the second polarizer has an absorption axis in the range of angle from 0 to 45° to the normal line of its film plane.
Claims16
A viewing angle controlling system, comprising a first polarizer and a second polarizer which are each in the form of a film comprising an absorption dichroic material, wherein
- the first polarizer has an absorption axis in its film plane, and
- the second polarizer has an absorption axis in the range of angle from 0 to 45° to the normal line of its film plane.
Dependencies are inferred from the claim text.