公开(公告)号：EP0746795A1

公开(公告)日：1996-12-11

申请号：EP95908343.0

申请日：1995-02-17

申请人： THE SECRETARY OF STATE FOR DEFENCE

发明人： MASON, Ian, Robert ,  McDONNELL, Damien, Gerard ,  GUY, Sarah, Caroline

IPC分类号： G02F1

CPC分类号： G02F1/133533 ,  G02F1/1334 ,  G02F2001/13756 ,  G02F2203/34

摘要： An electro-optic colour device comprises a layer of light modulating material, for example a polymer dispersed liquid crystal layer (7), located between polarisers (8, 9, 10) at least one of which is coloured (9, 10). By activating the device, a voltage is applied across the polymer dispersed liquid crystal cell (PDLC) and the cell is switched from a scattering to a non-scattering state or vice-versa, and by arranging the coloured polariser(s) accordingly, the colour of the light transmitted can be controlled. Suitable applications include membrane switches.

公开(公告)号：EP0746795B1

公开(公告)日：2000-09-20

申请号：EP95908343.7

申请日：1995-02-17

申请人： THE SECRETARY OF STATE FOR DEFENCE

发明人： MASON, Ian, Robert ,  McDONNELL, Damien, Gerard ,  GUY, Sarah, Caroline

IPC分类号： G02F1/1335 ,  G02F1/1333

CPC分类号： G02F1/133533 ,  G02F1/1334 ,  G02F2001/13756 ,  G02F2203/34

摘要： An electro-optic colour device comprises a layer of light modulating material, for example a polymer dispersed liquid crystal layer (7), located between polarisers (8, 9, 10) at least one of which is coloured (9, 10). By activating the device, a voltage is applied across the polymer dispersed liquid crystal cell (PDLC) and the cell is switched from a scattering to a non-scattering state or vice-versa, and by arranging the coloured polariser(s) accordingly, the colour of the light transmitted can be controlled. Suitable applications include membrane switches.