Abstract: A memory device of the present invention is characterized by a memory device for storing information by making use of molecular alignment of a liquid crystal compound in a liquid crystalline state formed by spot irradiation with a laser beam to carry out a selective heat treatment on an electroconductive liquid crystal semiconductor material layer containing a liquid crystal compound, comprising: a first electrode group including a plurality of linear electrodes which are parallel to each other; an electroconductive liquid crystal semiconductor material layer formed in such a manner that the layer covers the first electrode group, the layer containing a liquid crystal compound having a long linear conjugate structural moiety and exhibiting a smectic phase as a liquid crystal phase; and a second electrode group formed on the electroconductive liquid crystal semiconductor material layer and including a plurality of linear transparent electrodes being parallel to each other and extend in a direction intersecting

Abstract: A memory device includes first electrodes, second electrodes, third electrodes, heaters, and memory cells between the first electrodes and the heaters. Each third electrode is provided on the heaters, and each second electrode is provided at a side portion of the heaters. Each memory cell contains an electroconductive liquid crystal compound having a long linear conjugate structure and exhibiting a smectic phase as a liquid crystal phase. Information can be written in the memory cells by selectively heating the heaters to cause the corresponding memory cells to have both electroconductivity and optical anisotropy.

Abstract: A memory device of the present invention is characterized by a memory device for storing information by making use of molecular alignment of a liquid crystal compound in a liquid crystalline state formed by spot irradiation with a laser beam to carry out a selective heat treatment on an electroconductive liquid crystal semiconductor material layer containing a liquid crystal compound, comprising: a first electrode group including a plurality of linear electrodes which are parallel to each other; an electroconductive liquid crystal semiconductor material layer formed in such a manner that the layer covers the first electrode group, the layer containing a liquid crystal compound having a long linear conjugate structural moiety and exhibiting a smectic phase as a liquid crystal phase; and a second electrode group formed on the electroconductive liquid crystal semiconductor material layer and including a plurality of linear transparent electrodes being parallel to each other and extend in a direction intersecting

Abstract: A memory device includes first electrodes, second electrodes, third electrodes, heaters, and memory cells between the first electrodes and the heaters. Each third electrode is provided on the heaters, and each second electrode is provided at a side portion of the heaters. Each memory cell contains an electroconductive liquid crystal compound having a long linear conjugate structure and exhibiting a smectic phase as a liquid crystal phase. Information can be written in the memory cells by selectively heating the heaters to cause the corresponding memory cells to have both electroconductivity and optical anisotropy.

Abstract: A liquid crystal optical device comprising a porous structure having numerous through holes or blind holes between substrates with driving electrodes and liquid crystal filled in between the substrate makes it possible to readily and stably control orientation of liquid crystal molecules by applying an electric-voltage between the electrodes and ensure a sufficient optical length of the liquid crystal, thus to significantly improve the response speed of the liquid crystal.

Abstract: A light scattering type liquid crystal display device is here disclosed which comprises a liquid crystal cell comprising at least electrodes and alignment layers formed on opposite surfaces of a pair of opposite substrates and a chiral nematic liquid crystal layer having a planar structure sealed between the pair of substrates, and a voltage application means for feeding an application voltage to both the electrodes formed respectively on the pair of substrates, wherein by feeding the application voltage having a predetermined voltage waveform to both the electrodes from the voltage application means, a light scattering texture comprising a group of at least 3 planar structures having different twist angles is generated, held or erased in the chiral nematic liquid crystal layer. This display device is not equipped with any polarizing plate, and it has a high utilization efficiency, a wide visual angle and a high-speed response performance and it enables its driving at a low voltage.