Patent ID: 6512506
Filing Date: 2003-01-28
Classification: G09G

Abstract:
A driving device for a liquid crystal display element which provides for division of a 1-line selection period for setting a display state of a picture element having a 2-terminal element into a plurality of timing segments and applies different voltages to said picture element in each of said plurality of timing segments, comprising:dividing device for receiving a logical signal which varies with an environment of said liquid crystal display element, then selecting one dividing ratio pattern from at least two different predetermined dividing ratio patterns in accordance with said logical signal, and dividing said 1-line selection period into said plurality of timing segments based on a selection result, wherein at least one timing segment of said plurality of timing segments is a writing period for charging said picture element by one of a first predetermined voltage and a second predetermined voltage depending on an ON/OFF state of said picture element, and wherein at least one different timing segment of said plurality of timing segments is an erasing period for discharging said picture element in accordance with the ON/OFF state of said picture element, said first and second predetermined voltages each having a voltage level determined by said environment of said liquid crystal display element.