Display grayscale control using operational amplifiers

A driver comprising:

• a plurality of operational amplifiers;
• a plurality of first lines;
• a plurality of second lines intersecting the plurality of first lines;
• a plurality of switches, each of the plurality of switches controls an electrical connection between one first line of the plurality of first lines and one second line of the plurality of second lines;
• and
• a plurality of logic circuits,
• the plurality of first lines being set to a first voltage during a first period,
• the plurality of second lines being set to a second voltage during a second period,
• one switch of the plurality of switches being controlled based on one data signal of data signals,
• upon the one switch being turned on during the second period, the one first line being electrically connected to the one second line so as to setting the one first line to the second voltage,
• one logic circuit of the plurality of logic circuits detecting a voltage level of the one first line during the second period,
• the one logic circuit being connected with the one first line during the second period, and being disconnected with the one first line during any other than the second period,
• upon the one logic circuit detecting the second voltage during the second period, the one logic circuit outputting the control signal to activate one operational amplifier during a third period, the one operational amplifier outputs a third voltage corresponding to the one data signal, and
• the one second line being set to the third voltage during the third period, the third voltage being outputted to the one first line from the one operational amplifier, the third voltage electrically transmitting through the one first line and the one switch.