Abstract: In a method for driving a liquid crystal display apparatus which includes liquid crystal having spontaneous polarization disposed between a plurality of pixel electrodes arranged in a matrix form and a common electrode disposed to face the pixel electrodes, the method for driving the liquid crystal display apparatus includes a polarity inversion of periodically inverting polarities of at least one part of voltages applied between the plurality of pixel electrodes and the common electrode, and a write-in operation of applying the voltages to the pixel electrodes to hold display voltages, respectively, corresponding to the applied voltages on the pixel electrode, wherein the polarity inversion is effected to satisfy the expression of TS/TF≧2 when a frame period is set to TF and a period for effecting the polarity inversion is set to TS.

Abstract: The present invention of reflective liquid crystal display device include in: substrate having a surface; a pixel electrode on the surface; a first liquid crystal layer provided on the substrate; a second liquid crystal layer provided on the first liquid crystal layer; a counter electrode formed on the second liquid crystal layer; and a separating member provided between the first liquid crystal layer and the second liquid crystal layer. The first and second liquid crystal layers constituted by liquid crystal material having Bragg reflection(selective reflection in the same twist direction. The separating layer constituted optical compensator.

Abstract: A pixel electrode is connected to a signal line via an n-channel TFT element for writing image signals and the pixel electrode is connected to an auxiliary storage capacitance line via p-channel TFT element for resetting the pixel electrode, wherein gate electrodes of the n-channel and p-channel TFT elements provided in a pixel region are commonly connected to a corresponding scanning line of the pixel region or to the corresponding scanning line and an adjacent scanning line, respectively.

Abstract: The present invention is a liquid crystal including a ferroelectric liquid crystal compound and a siloxane compound represented by the following general formula (I). ##STR1## (where m is an integer of 0 to 20, n is an integer of 0 to 8, p is 0 or 1, q is an integer of 0 to 2, R is an alkyl group such as methyl group, ethyl group or propyl group, or an organic residue group represented by the following general formula (II) ##STR2## where R* is an alkyl group having optical activity center and X is halogen).

Abstract: It is an object of this invention to provide an active matrix type liquid crystal display which uses a ferroelectric liquid crystal or antiferroelectric liquid crystal, which has a high response speed, a wide angle of field, and a high contrast, and which does not cause a "step response" phenomenon.

Abstract: An LCD which having a high response speed, a wide viewing angle and a high contrast and capable of displaying high-quality gray-scale images at normal temperature. The LCD comprises an array substrate, a counter substrate opposing the array substrate, pixel electrodes arranged on the the array substrate in rows and columns, each connected to an active element, a first orientation film provided on the pixel electrodes, a counter electrode opposing the pixel electrodes, arranged on the counter substrate, a second orientation film provided on the counter electrode, rubbed in a direction slightly inclined to a direction in which the first orientation has been rubbed, and a layer of antiferroelectric liquid crystal sealed in a gap between the first and second orientation films, the antiferroelectric liquid crystal being a smectic liquid crystal which contains an antiferroelectric liquid crystal compound represented by R.sup.1 (O)--Zm--Y--E--COO--C*HX--R.sup.4.

Abstract: The present invention is a liquid crystal material including a base crystal material, a compound represented by the following general formula (I) and/or a compound represented by the following general formula (II) ##STR1## (where n is an integer of 0 to 10, m is an integer of 0 to 15, and x is cyano group or halogen).

Abstract: A liquid crystal display element has a pair of substrates and a liquid crystal material held between the substrates, the liquid crystal material containing a main liquid crystal material and an auxiliary liquid crystal material whose phase can be separated from the phase of the main liquid crystal material. The liquid crystal material exhibits the states of reflection, scattering and transmission upon receipt of an external stimulation. The particular construction of the liquid crystal material permits the display element to have a wide viewing angle and to exhibit excellent optical characteristics over wide wavelength range.

Abstract: A liquid crystal display element comprises a pair of substrates having electrodes formed thereon, and a liquid crystal layer interposed between the substrates. The liquid crystal layer contains a gel of a mixture comprising an organic compound having a perfluoroalkyl group and a liquid crystal material.

Abstract: Disclosed herein is a liquid-crystal orientating film which is a polymer film consisting of stripe-shaped contracted portions extending in a predetermined direction and non-contracted portions located adjacent to the contracted portions, and which is designed to orientate liquid-crystal molecules in the direction in which the portions of the film are contracted and non-contracted. The liquid-crystal orientating film has been manufactured by applying light to selected portions of a polymer film, thereby photo-curing these portions, thus forming stripe-shaped contracted portions, stretching the remaining portions of the film, which are located adjacent to the contracted portions, by virtue of the contraction of the portions applied with light.

Abstract: A compound represented by formula: ##STR1## In the formula, Ar represents ##STR2## and each of Ra and Rb independently represents an optically non-active alkyl group or an optically active group having an asymmetric carbon atom. Either Ra or Rb is the optically active group. X represents ##STR3## Each of l and m represents 0 or 1.