LIQUID CRYSTAL DISPLAY DEVICE USING FERROELECTRIC LIQUID CRYSTAL

PROBLEM TO BE SOLVED: To provide a display with multigradation compared with a conventional device by controlling a ferroelectric liquid crystal material to have high- voltage induced oriented states U3 and U4. SOLUTION: A ferroelectric liquid crystal 18 in C2U orientation state is injected between...

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Bibliographic Details
Main Authors HARADA TAKAMASA, RI KEI, NONAKA TOSHIAKI, TAKECHI AYAKO
Format Patent
LanguageEnglish
Published 16.03.1999
Edition6
Subjects
ADVERTISING
CRYPTOGRAPHY
DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING
DISPLAY
DISPLAYING
EDUCATION
FREQUENCY-CHANGING
LABELS OR NAME-PLATES
NON-LINEAR OPTICS
OPTICAL ANALOGUE/DIGITAL CONVERTERS
OPTICAL LOGIC ELEMENTS
OPTICS
PHYSICS
SEALS
SIGNS
TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Summary:PROBLEM TO BE SOLVED: To provide a display with multigradation compared with a conventional device by controlling a ferroelectric liquid crystal material to have high- voltage induced oriented states U3 and U4. SOLUTION: A ferroelectric liquid crystal 18 in C2U orientation state is injected between an orienting film 14 and pixel electrodes 17, while the distance between the orienting film 14 and the pixel electrodes 17 is maintained const. by a spacer 19 sprayed or formed as walls at proper positions on the substrate. The ferroelectric liquid crystal material 18 with C2U orientation shows U2 orientation state when positive voltage is applied and shows U1 orientation when negative voltage is applied. Further, when larger positive voltage is applied, the liquid crystal shows U4 orientation state, and when larger negative voltage is applied, it shows U3 orientation state. Therefore, the liquid crystal material 18 shows any desired orientation state between U1 and U3 states and any desired orientation state from U1, through U2 to U4, according to positive or negative voltages applied. Therefore, the quantity of transmitted light can be continuously changed and a display with multigradation can be obtd.
Bibliography:Application Number: JP19980147547