Liquid crystal device having drive duty ratios of all display po

Details Liquid crystal device having drive duty ratios of all display po Liquid crystal device having drive duty ratios of all display po

1997-11-20

2000-12-12

Sikes, William L.

Liquid crystal cells, elements and systems

Particular excitation of liquid crystal

Electrical excitation of liquid crystal

349143, 349152, 345 51, 345 58, 345 91, 345 92, 345 89, 345 95, 345 96, 455464, 713321, G02F 1133, G02F 11343, G02F 11345

Patent

active

061605948

ABSTRACT:
A structure of a liquid crystal device cutting down the power consumption is materialized. In a liquid crystal display device comprising at least two display portions of a dot matrix portion and an icon portion in the same panel, drive is carried out such that both of the display portions are displayed in a normal operation mode and, only the icon portion is displayed in a power-saving operation mode such as when the liquid crystal display device is waiting for operation or is standby. In the power-saving operation mode, the duty ratios of all of the display portions in the power-saving operation mode are lower than those in the normal operation mode, and time shared drive waveforms using the power source voltage as it is which does not require bias voltage are applied.

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