Invention Grant
- Patent Title: Pigment layer for polymer-dispersed liquid crystal displays
- Patent Title (中): 用于聚合物分散液晶显示器的颜料层
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Application No.: US10222396Application Date: 2002-08-16
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Publication No.: US06788362B2Publication Date: 2004-09-07
- Inventor: Stanley W. Stephenson , Mary C. Brick
- Applicant: Stanley W. Stephenson , Mary C. Brick
- Main IPC: G02F11333
- IPC: G02F11333

Abstract:
A display having polymer dispersed liquid crystals, which display comprises a transparent substrate; a layer comprising polymer-dispersed cholesteric liquid crystal disposed over the substrate, which layer has more than one stable optical state in the absence of an electrical field. The display further comprises a first transparent conductor disposed between the state changing layer and the transparent support, a second conductor on the other side of the state changing layer so that when a field is applied between the first and second conductors, the liquid crystals change state. It has been found advantageous to have a non-conductive, non-field spreading dark layer of sub-micron pigments in a binder for providing an improved light absorbing function, which dark layer is disposed between the layer of polymer-dispersed cholesteric liquid crystal and the second conductor.
Public/Granted literature
- US20040032545A1 Pigment layer for polymer-dispersed liquid crystal displays Public/Granted day:2004-02-19
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