Driving apparatus for an electrode matrix suitable for a liquid crystal panel

A display apparatus, comprising:

• a) a driving unit comprising a scanning electrode driver and a data electrode driver for driving an electrode matrix having scanning electrodes and data electrodes;
• b) a drive voltage generating unit comprising first means for generating a fixed voltage, second means for generating a source voltage for providing drive voltages for driving the electrode matrix, and third means for generating a first voltage equal to a difference of the fixed voltage from the source voltage and a second voltage equal to a difference of the source voltage from the fixed voltage,
• wherein the first voltage and the second voltage are of mutually opposite polarities with respect to the fixed voltage, and the fixed voltage comprises a voltage set to an intermediate value between a maximum output voltage and a minimum output voltage of said drive voltage generating unit;
• c) a liquid crystal panel comprising a first substrate having said scanning electrodes thereon, a second substrate having said data electrodes thereon, and a liquid crystal disposed between said first and second substrates;
• and
• d) control means for controlling said scanning electrode driver and said data electrode driver so as to sequentially apply a scanning selection signal to said scanning electrodes and apply data signals corresponding to given data to said data electrodes in synchronism with the scanning selection signal.