Data line drive circuit and method for driving data lines

1. A data line drive circuit comprising:

a plurality of output circuits configured to output voltages corresponding to grayscale voltages with respect to display data;

a plurality of switch portions configured to switch to an ON-state in response to a line output signal and connect said plurality of output circuits and a plurality of data lines,

respectively,

wherein ON-resistance values of at least part of said plurality of switch portions vary in said ON-state,

wherein each of said plurality of switch portions includes:

a switch, and

a parallel circuit configured to be connected to said switch in series,

wherein said parallel circuit includes:

a fixed value resistive element, and

a variable resistive element configured to be connected to said fixed value resistive element in parallel.

2. A liquid crystal display device comprising:

a display panel configured to includes a plurality of data lines; and

a data line drive circuit configured to drive said plurality of data lines,

wherein said data line drive circuit includes:

a plurality of output circuits configured to output voltages corresponding to grayscale voltages with respect to display data, and

a plurality of switch portions configured to become a ON-state in response to a line output signal and connect said plurality of output circuits and said plurality of data lines,

respectively,

wherein ON-resistance values of at least part of said plurality of switch portions vary in said ON-state,

wherein each of said plurality of switch portions includes:

a switch, and

a parallel circuit configured to be connected to said switch in series,

wherein said parallel circuit includes:

a fixed value resistive element, and

a variable resistive element configured to be connected to said fixed value resistive element in parallel.