Liquid crystal display device
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United States of America Patent
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Dec 7, 2010
Grant Date -
Dec 11, 2008
app pub date -
Oct 17, 2007
filing date -
Apr 18, 2005
priority date (Note) -
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Abstract
A liquid crystal material is used in which the maximum angle of the optical axis change by liquid crystal molecule when a voltage of one polarity is applied is larger than 45 degrees and a condition of |2PsA|>|5(V)ClcA| is satisfied where Ps (nC/cm.sup.2) is the magnitude of the spontaneous polarization per unit area, A (cm.sup.2) is the electrode area of the pixel and Clc (nF/cm.sup.2) is the liquid crystal capacity per unit area. The transmittance in the liquid crystal part is increased and excellent display can be performed without the provision of a storage capacitor. Consequently, the storage capacitor is unnecessary, so that the aperture ratio of the liquid crystal panel can be increased.
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