Display device and sensing signal processing apparatus

A display device comprising:

• a plurality of first sensing data lines extending in a first direction;
• a plurality of second sensing data lines extending in a second direction;
• a plurality of first sensors connected to the first sensing data lines;
• a plurality of second sensors connected to the second sensing data lines;
• a plurality of first signal converters which compare first sensing data signals from each of the first sensing data lines with a first reference voltage and output first sensing output signals;
• a plurality of second signal converters which compare second sensing data signals from each of the second sensing data lines with the first reference voltage and output second sensing output signals;
• a first position signal output unit which outputs a predetermined bit of a first position signal depending on the plurality of first sensing output signals;
• a second position signal output unit which outputs a predetermined bit of a second position signal depending on the plurality of second sensing output signals;
• a signal output unit which outputs a digital sensing signal in series based on the first and second position signals from the first and second position signal output units;
• and
• a contact determiner which determines a contact position of the first and second sensors based on the digital sensing signal from the signal output unit.