Signal line driving method for display apparatus, display apparatus and signal line driving method

A signal line driver circuit driving a signal line of a display apparatus, the driver circuit comprising:

• a polarity control unit that receives a polarity signal and generates, from the polarity signal, a data polarity control signal indicating a polarity preceding by one line and an output polarity control signal;
• a data control unit that serially receives data and controls to change over between outputting neighboring first and second data serially received, as even and odd data, in parallel, and outputting the neighboring first and second data serially received, as odd and even data, in parallel, depending on the data polarity control signal
• a shift register unit that receives a start signal supplied thereto on a per line basis, the shift register transferring the start signal, responsive to an input clock signal to generate and output a plurality of timing signals from respective stages thereof;
• a data register unit that captures odd-numbered data and even-numbered data, output from the data control unit, responsive to the timing signal output from an associated stage of the shift register;
• a data latch unit that, after data being captured in the data register unit, latches the data in the data register unit, simultaneously, responsive to an input latch, at a leading-end of a next line;
• a D/A converter unit including a plurality of D/A converters of positive polarity and a plurality of D/A converters of negative polarity,
• each of the D/A converters of positive polarity selecting and outputting one of a plurality of gray scale voltages generated by a reference power supply unit for positive polarity, based on corresponding data latched by the data latch unit,
• each of the D/A converters of negative polarity selecting and outputting one of a plurality of gray scale voltages generated by a reference power supply unit for negative polarity, based on the corresponding data latched by the data latch unit;
• the selector unit including a plurality of 2-input and 2-output changeover switches, each of the 2-input and 2-output changeover switches receiving, as 2-inputs, the gray scale voltages of positive and negative polarities, selected and output by the associated D/A converter of positive polarity and the associated D/A converter of negative polarity neighboring to one another,
• each of the 2-input and 2-output changeover switches changing over between straight connection and crossing connection between neighboring channels, based on the output polarity control signal output from the polarity control unit;
• and
• an output amplifier unit including a plurality of amplifier circuits, each of the amplifier circuits outputting associated output voltages from the 2-input and 2-output changeover switches of the selector unit.

A method for controlling a signal line driving for a display apparatus, the method comprising:

• generating, from an input polarity signal, a data polarity control signal indicating a polarity preceding by one line;
• controlling an interchange between each neighboring pair of input data, based on the data polarity control signal;
• capturing by a data register unit the input data resulting from the interchange control operation;
• latching the data captured in the data register unit at a leading end of a line;
• and
• controlling, based on the polarity signal, an interchange between each neighboring pair of output signals, each output signal corresponding to the data latched.