View angle control sheet and method for producing the same
AssigneeKimoto Co., Ltd.
InventorsToshihiro Koike, Teruo Ohnuma, Satoshi Ako, Yasunori Sugiyama
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Abstract
A view angle control sheet comprising a non-oriented light permeable polymer layer having cracks of regular directionality is disclosed. The view angle control sheet of the present invention has good view angle control property and can easily be obtained at low cost. The sheet having good view angle control property with respect to two or more directions can also easily be obtained as required at low cost. The view angle control sheet of the present invention can be used in office equipment displays, automobile meters, outdoor displays, windows and the like to desirably control view angles.
Claims13
A method for producing a view angle control sheet comprising a non-oriented light permeable polymer layer having cracks of regular directionality, which method comprises linearly applying a force on the light permeable polymer layer, to bend said sheet through an angle sufficient to form numerous cracks of regular directionality in the non-oriented light permeable polymer layer.
A view angle control sheet comprising a non-oriented light permeable polymer layer having cracks of regular directionality, said cracks being formed in said layer by a process comprising applying a linear force across said sheet to bend said sheet through an angle sufficient to cause formation of said cracks.
Dependencies are inferred from the claim text.