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Class Information
Number: 349/179
Name: Liquid crystal cells, elements and systems > With specified nonchemical characteristic of liquid crystal material > Within nematic phase > Twisted (or chiral) nematic or supertwisted nematic
Description: Subject matter wherein the characteristic recited is that of a liquid crystal within the nematic mesophase in which the liquid crystal molecules exhibit a twist from one substrate to the other.

Sub-classes under this class:

Class Number Class Name Patents
349/181 Having particular birefringence or retardation 219
349/180 Having particular parameter of twist 189

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8704976 Liquid crystal display device and control method for a bistable nematic liquid crystal display having two stable textures comprising a uniform or slightly twisted state Apr. 22, 2014
8665414 Methods for fabricating thermochromic filters Mar. 4, 2014
8658060 Liquid crystal composition and liquid crystal display device having the same Feb. 25, 2014
8477278 Liquid crystal display panel Jul. 2, 2013
8427616 Bistable chiral splay nematic mode crystal display device Apr. 23, 2013
8350836 Liquid crystal display device and liquid crystal driving method Jan. 8, 2013
8351000 Optical film and method for producing same, polarizer, and liquid crystal display device Jan. 8, 2013
8334966 Method of forming a bistable watermark Dec. 18, 2012
8330932 Bistable watermark Dec. 11, 2012
8319923 Liquid crystal display device having two discotic liquid crystal compensating films and two retardation films Nov. 27, 2012
8212986 LCD device, display method thereof and electronic apparatus employing LCD device Jul. 3, 2012
8203680 Liquid crystal display with different twisting directions of liquid crystal molecules Jun. 19, 2012
8045115 Liquid crystal display with different twisting directions of liquid crystal molecules Oct. 25, 2011
8023094 Monochromatic liquid crystal display with high contrast ratio Sep. 20, 2011
8004621 Switchable lens Aug. 23, 2011
7999909 Fabrication method of in-plane switching mode liquid crystal display device including twisted nematic liquid crystal layer between first and second ferroelectric liquid crystal layers Aug. 16, 2011
7864276 Liquid crystal display device Jan. 4, 2011
7859638 Method for driving liquid crystal light modulating device, and liquid crystal light modulating device Dec. 28, 2010
7855768 Transflective liquid crystal display using separate transmissive and reflective liquid crystal cells and materials with single cell gap Dec. 21, 2010
7852445 Liquid crystal display device and terminal device that uses same Dec. 14, 2010
7843536 Liquid crystal display device and projector Nov. 30, 2010
7787088 In-plane switching mode liquid crystal display device comprising twisted nematic liquid crystal layer between first and second ferroelectric liquid crystal layers having clockwise and counterc Aug. 31, 2010
7738070 Liquid crystal display element Jun. 15, 2010
7724221 Bistable nematic liquid crystal display method and device May. 25, 2010
7701537 Optical diode Apr. 20, 2010
7675588 System for displaying images including a liquid crystal display panel Mar. 9, 2010
7671945 UV curable alignment material for fabrication of monolithic compensators for liquid crystal displays Mar. 2, 2010
7648646 LC material with homeotropic alignment Jan. 19, 2010
7616287 Liquid crystal display element Nov. 10, 2009
7612835 Bistable liquid crystal displays and the method for driving the same Nov. 3, 2009
7599040 Color liquid crystal display device Oct. 6, 2009
7589816 Display device with a black-optimizing bistable nematic screen and method for the definition of said device Sep. 15, 2009
7575787 Liquid crystal composition, liquid crystal display element using the same, and electronic paper including the same Aug. 18, 2009
7557897 Liquid crystal display Jul. 7, 2009
7551252 Bistable twisted nematic liquid crystal display based on dual frequency operation Jun. 23, 2009
7517566 Liquid crystal composition containing at least two kinds of gelling agents and liquid crystal display device using the same Apr. 14, 2009
7505095 Display panel, and display device and electronic device using thereof Mar. 17, 2009
7407692 Chiral nematic liquid crystal composition, liquid crystal display device, and production method thereof Aug. 5, 2008
7405787 Liquid crystal display with offset viewing cone Jul. 29, 2008
7391485 Liquid crystal display device using dual light unit and method of fabricating the same Jun. 24, 2008
7307685 Display element and display device Dec. 11, 2007
7265801 Display panel, and display device and electronic device using thereof Sep. 4, 2007
7259817 Liquid crystal display device and partial transmission type liquid crystal display device Aug. 21, 2007
7259818 Nematic liquid crystal devices comprising surface protrusions formed of anisotropic material for nucleation of an active region Aug. 21, 2007
7253871 Efficient room-temperature source of polarized single photons Aug. 7, 2007
7253861 Liquid crystal optical element comprising a resin layer having a surface hardness of b or less Aug. 7, 2007
7215397 Liquid crystal display device comprising a TN alignment region continuously connectable with a bend alignment region, each region having a different pretilt direction and the method of fabrica May. 8, 2007
7167229 Liquid crystal display element and projection display device Jan. 23, 2007
7161647 Liquid crystal display device and electronic device Jan. 9, 2007
7123336 Twisted nematic liquid crystal material with certain values for dielectric constant anisotropy, twisted elasticity modulus and refractive index anisotropy Oct. 17, 2006

1 2 3 4

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