Liquid crystal display apparatus

A liquid crystal display apparatus comprising:

• a substrate;
• a plurality of scanning lines extending substantially in parallel with each other in a row direction on said substrate;
• a plurality of control lines extending substantially in parallel with each other in the row direction on said substrate and paired with said plurality of scanning lines, respectively;
• a plurality of signal lines extending substantially in parallel with each other in a column direction on said substrate;
• a signal line driver for supplying a current signal as a pixel signal to each of said plurality of signal lines;
• a scanning line driver for selectively supplying a scanning signal to said plurality of scanning lines;
• and
• a plurality of pixels arranged on said substrate at intersections of said plurality of scanning lines and said plurality of signal lines, each of said plurality of pixels including:
• a first switch having a first conduction path and a first control terminal controlling a conduction state of the first conduction path, one end of the first conduction path being connected to a corresponding one of the plurality of the signal lines, and the first control terminal being connected to a corresponding one of the plurality of scanning lines;
• one of a resistor and a capacitor, one end of which is connected to the other end of said conduction path of said first switch and the other end of which is connected to a first fixed potential;
• a second switch having a second conduction path and a second control terminal controlling a conduction state of said second conduction path, one end of said second conduction path being connected to the other end of said first conduction path of said first switch, and said second control terminal being connected to a corresponding one of said plurality of control lines;
• and
• a liquid crystal cell having two electrodes, one of said two electrodes being connected to the other end of said second conduction path of said second switch, and the other of said two electrodes being connected to a second fixed potential.

A liquid crystal display apparatus comprising:

• a substrate;
• a plurality of scanning lines extending substantially in parallel with each other in a row direction on said substrate;
• a plurality of signal lines extending substantially in parallel with each other in a column direction on said substrate;
• a signal line driver for supplying a current signal as a pixel signal to each of said plurality of signal lines;
• a scanning line driver for selectively supplying a scanning signal to said plurality of scanning lines;
• and
• a plurality of pixels arranged on said substrate at intersections of said plurality of scanning lines and said plurality of signal lines, each of said plurality of pixels including conversion means for receiving the current signal, which is supplied to said signal lines, and converting the current signal into a voltage signal, and a liquid crystal cell to which the converted voltage signal is applied,
• wherein said signal line driver comprises:
• n (n is an integer) resistors, one of the ends of said n resistors receiving n input bit signals, respectively, and the other ends of said n resistors being connected with each other to form a node;
• and
• an operational amplifier, an inverting input terminal of said operational amplifier being connected to the node, a noninverting input terminal of said operational amplifier being grounded, and an output terminal of said operational amplifier being connected to the inverting terminal thereof and outputting the current signal to a corresponding one of said plurality of signal lines.