Driving method of driving a liquid crystal display element

Details Driving method of driving a liquid crystal display element Driving method of driving a liquid crystal display element

1992-07-08

1993-11-16

Sikes, William L.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

345 93, 345210, G02F 1133, G09G 336

Patent

active

052628817

ABSTRACT:
A driving method of a matrix type liquid crystal display element comprising at least J.times.L number (J subgroup) of row electrodes and a plurality of column electrodes. When information of the j-th row electrode subgroup in a specified column is expressed by a column vector D.sub.j having an L number of elements, the following conditions are satisfied: (1) and j-th row electrode subgroup is selected so that the elements of a selection voltage vector which constitute a selection voltage matrix in which the product of a matrix and a transposed matrix of the same assumes a scalar multiple of the unit matrix is selected, and the selection voltage matrix comprising election voltage vectors arranged in a matrix are selected, and (2) when the j-th row electrode subgroup is selected, the voltage applied to the column electrodes to indicate a display information by means of the vector D.sub.j are determined as in the following items (a) and (b): (a) a vector .beta. is formed by the selection voltages applied to the j-th row electrode subgroup, and (b) a voltage V.sub.i (i=D, 1 . . . L) given by the sum of exclusive OR of the elements corresponding to the vectors .beta. and D.sub.j is applied to the column electrodes.

REFERENCES:
patent: 4710766 (1987-12-01), Dubois et al.
patent: 5119085 (1992-06-01), Yamazaki

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