Patent ID: 6887729
Filing Date: 2005-05-03
Classification: G02B,G02F

Abstract:
1. A method for creating a micropolarizer comprising: providing a material having a first and a second surface; cleaning material by 2-propanol in an ultrasonic rank for 30 second; spraying spacers on a first surface of said material; make a cell with a first and second sheet of said material in such a way that a stretching direction of one sheet is orthogonal to the other; filling in polymerizable twisted nematic LC (TNLC) between said sheets; covering said cell with a micropolarizer pattern mask; ensuring a direction of horizontal rows is oriented 45° with respect to said stretching direction; placing said cell and said mask into a pressing machine to make said cell and said mask closed completely; controlling a thickness of said cell; polymerizing the TNLC under the transparent area with UV light into a permanent TN texture; removing said mask; heating the cell higher than a nematic-isotropic transition temperature so that unpolymerized LC covered by opaque strips of said mask experience a transition into an isotropic phase; using UV light to polymerize uncured LC material at isotropic phase.