Liquid crystal display apparatus and method of driving same

Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix

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G09G 336

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06061045&

ABSTRACT:
A liquid crystal display apparatus is constituted from a display panel including scanning electrodes and data electrodes intersecting the scanning electrodes so as to form a matrix of pixels each comprising at least two sub-pixels at an intersection of the scanning electrodes and the data electrodes; a ferroelectric liquid crystal disposed between the scanning electrodes and the data electrodes and capable of assuming an antiferroelectric first stable state under application of no voltage and a ferroelectric second stable state and a ferroelectric third stable state under application of voltages corresponding to polarities of the applied voltages; polarizing means for discriminating the first stable state of the liquid crystal as a dark state, and the second and third stable states of the liquid crystal as bright states; and drive means for applying voltages to the scanning electrodes and the data electrodes so as to place the liquid crystal in the second stable state at a sub-pixel of the sub-pixels and in the third stable state at another sub-pixel of the sub-pixels when a pixel concerned is placed in bright state or drive means for sequentially selecting the scanning electrodes with skipping of N electrodes apart (N: positive integer) by applying selection voltages of polarities alternating for each selection to successively selected scanning electrodes. The drive means is effective in minimizing differences in transmittance and hue when viewed in an oblique direction to alleviate flickering.

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