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Scattering‐type displays using memory effects in nematic LC cells without rubbing
Author(s) -
Nose T.,
Ukawa Y.,
Sato S.
Publication year - 1993
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1889/1.1984881
Subject(s) - liquid crystal , rubbing , materials science , opacity , scattering , light scattering , transmittance , optics , phase (matter) , isotropy , voltage , optoelectronics , liquid crystal display , physics , composite material , quantum mechanics
— The light‐scattering properties of the memory effect of the molecular orientation in a nematic LC cell without rubbing have been investigated. By using the plane‐parallel electrode structure adopted in the usual LC devices, the LC cell becomes opaque, and strong light‐scattering effects can be obtained after the LC cell is heated up to an isotropic phase and then cooled down to a nematic phase with an ac applied voltage. The transmittance of the opaquely memorized cell can be changed by a relatively low driving voltage. The voltage‐controlled opaque state is stable at room temperature, but it can be cleared by heating the LC cell to an isotropic phase. Some relationships between the light‐scattering properties and experimental conditions are investigated, and potential applications for a new type of light‐scattering LCD with a memory function will be discussed.