Digital capacitive touch screen

A digital capacitive touch screen, comprising a touch substrate and a touch system circuit, the touch system circuit having a touch excitation source and a touch signal detection unit, wherein

• at least two staggered electrode groups are disposed on the touch substrate, and multiple electrode lines of the electrode groups are connected to the touch system circuit;
• in a working period of the touch system circuit, for at least one moment, the touch excitation source applies touch signals to more than two electrode lines at the same time, and the touch signal detection unit selects at least one shielded electrode line as a detecting line;
• the detecting line detects the change of the touch signal flowing through the electrode when the touch signal is applied to the electrode;
• and the shielded electrode is the electrode where adjacent or non-adjacent electrode lines on two sides of the electrode line are applied with the touch signals, or the electrode where the electrode lines staggered with the electrode line are applied with the touch signals.