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Class Information
Number: 349/35
Name: Liquid crystal cells, elements and systems > Particular excitation of liquid crystal > Electrical excitation of liquid crystal (i.e., particular voltage pulses, ac vs. dc, threshold voltages, etc.) > For driving grandjean to focal conic or dynamic scattering type liquid crystal
Description: Subject matter wherein the electrical excitation is applied to a liquid crystal material to switch it from a Grandjean to a focal conic state or to exhibit dynamic scattering.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7382430 |
Liquid crystal optical element and test method for its boundary layer |
Jun. 3, 2008 |
| 7253861 |
Liquid crystal optical element comprising a resin layer having a surface hardness of b or less |
Aug. 7, 2007 |
| 6950171 |
Liquid crystal color switch and method of manufacture |
Sep. 27, 2005 |
| 6950086 |
Driving method for a cholesteric liquid crystal display device having a memory mode of operation and a driving apparatus |
Sep. 27, 2005 |
| 6894733 |
Liquid crystal display apparatus exhibiting cholesteric phase |
May. 17, 2005 |
| 6888583 |
Method and apparatus for adjusted DC offset potential in a liquid crystal display (LCD) device |
May. 3, 2005 |
| 6885409 |
Cholesteric liquid crystal display system |
Apr. 26, 2005 |
| 6885357 |
Method for writing pixels in a cholesteric liquid crystal display |
Apr. 26, 2005 |
| 6882401 |
Light modulation medium and light modulation method |
Apr. 19, 2005 |
| 6853412 |
Transaction card with memory and polymer dispersed cholesteric liquid crystal display |
Feb. 8, 2005 |
| 6674494 |
Liquid crystal optical element and test method for its boundary layer |
Jan. 6, 2004 |
| 6602563 |
Liquid crystal display |
Aug. 5, 2003 |
| 6590411 |
Image sticking measurement method for liquid crystal display device |
Jul. 8, 2003 |
| 6531997 |
Methods for addressing electrophoretic displays |
Mar. 11, 2003 |
| 6377321 |
Stacked color liquid crystal display device |
Apr. 23, 2002 |
| 6366330 |
Cholesteric liquid crystal display that prevents image sticking |
Apr. 2, 2002 |
| 6278387 |
Audio encoder and decoder utilizing time scaling for variable playback |
Aug. 21, 2001 |
| 6274208 |
Liquid crystal composition and liquid crystal display device |
Aug. 14, 2001 |
| 6198466 |
Multifunctional digital indicator |
Mar. 6, 2001 |
| 6172720 |
Low viscosity liquid crystal material |
Jan. 9, 2001 |
| 6061107 |
Bistable polymer dispersed cholesteric liquid crystal displays |
May. 9, 2000 |
| 6005651 |
Display panel and projection display system with use of display panel |
Dec. 21, 1999 |
| 5933203 |
Apparatus for and method of driving a cholesteric liquid crystal flat panel display |
Aug. 3, 1999 |
| 5889566 |
Multistable cholesteric liquid crystal devices driven by width-dependent voltage pulse |
Mar. 30, 1999 |
| 5625477 |
Zero field multistable cholesteric liquid crystal displays |
Apr. 29, 1997 |
| 5453863 |
Multistable chiral nematic displays |
Sep. 26, 1995 |
| 5233445 |
Active matrix liquid crystal display with average dielectric constant greater than 6 and less than 1.8 meq/g cyano groups |
Aug. 3, 1993 |
| 5172256 |
Liquid crystal variable color density lens and eye protective devices incorporating the same |
Dec. 15, 1992 |
| 5103327 |
Active matrix liquid crystal display element and a projection type active matrix liquid crystal display apparatus |
Apr. 7, 1992 |
| 5036199 |
Liquid crystal chopper and infrared sensor |
Jul. 30, 1991 |
| 4795238 |
Liquid crystal focusing screen having different groups of electrodes |
Jan. 3, 1989 |
| 4717243 |
Bistable liquid crystal display utilizing priming voltages |
Jan. 5, 1988 |
| 4616903 |
Encapsulated liquid crystal and method |
Oct. 14, 1986 |
| 4617646 |
Electric field gradient excited liquid crystal cell having bistability |
Oct. 14, 1986 |
| 4528562 |
Co-ordinate addressing of smectic display cells |
Jul. 9, 1985 |
| 4447132 |
Liquid crystal display device |
May. 8, 1984 |
| 4419664 |
Co-ordinate addressing of smectic display cells |
Dec. 6, 1983 |
| 4413256 |
Driving method for display panels |
Nov. 1, 1983 |
| 4408201 |
Electro-optic display device using phase transition mode liquid crystal |
Oct. 4, 1983 |
| 4336980 |
Fluorescent liquid crystal display devices |
Jun. 29, 1982 |
| 4278328 |
Guest-host liquid crystal display device |
Jul. 14, 1981 |
| 4139273 |
Method for preparing and operating a smectic liquid crystal display cell having indefinite storage properties |
Feb. 13, 1979 |
| 4116543 |
Control electro-optical device utilizing liquid crystal |
Sep. 26, 1978 |
| 4105288 |
Liquid crystal display with bistable cholesteric liquid crystal layer |
Aug. 8, 1978 |
| 4097127 |
Mixed liquid crystalline texture formation |
Jun. 27, 1978 |
| 4047803 |
Nematic liquid crystal compositions |
Sep. 13, 1977 |
| 4012121 |
Texture transformations in optically negative liquid crystals |
Mar. 15, 1977 |
| 4012118 |
Texture transformations in optically negative liquid crystals |
Mar. 15, 1977 |
| 3982239 |
Saturation drive arrangements for optically bistable displays |
Sep. 21, 1976 |
| 3979743 |
Displays |
Sep. 7, 1976 |
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