Reflective Cholesteric Liquid Crystal Display Multi-domain Structure Formation And Research

The multi-domain bistable reflective cholesteric liquid crystal displays (ChLCD) have been a kind of remarkable reflective display in recent years. This display is realized by the two contrastive states between Plannar texture's Bragg reflective bright state and Focal Conic's scattered dark state. Two stable states at zero field is its most notable characteristic, so it is a low power reflective display. It is no polarizer, readable in sunlight, also plastic display, suitable to E-paper application, and received more attentions. Its future is fine, but at present is developing in lab. Because there are two limitations: one is high driving voltage, the other is slow response speed. So many researches were done on the structure, driving circuit, material, manufacture process and so on. Through the manufacture of the surface-treated bistable reflective ChLCD, the relation is studied between process parameters and cholesteric liquid's multi-domain form. By lab's existing process equipments and conditions, the sample of ChLCD is made. Process parameters of the surface-treated bistable reflective ChLCD's manufacture are confirmed, and main process sketch maps are shown. All of it, the relation between rubbing alignment process parameters and multi-domain form is deeply discussed and the primary conclusion is made. At last, the presently popular driving methods of ChLCD are explained. Also the driving scheme paper used is present, including the driving wave of row, column, and pixel and the circuit module map. Full screen display is realized.