HIGH-DIMENSIONAL MATRIX TOUCH SURFACE COMPRISING DOUBLE-INJECTED ELECTRONICS OF LINES OR COLUMNS

摘要

The general field of the invention is that of touch-sensitive devices with projected capacitive detection comprising a matrix touch screen (M) comprising a plurality of conductive lines (L) and conductive columns (C), said slab being connected to means electronic control system (ELG, ELD, EC) generating, for each line and for each conductive column, transmission signals and means for receiving and electronically analyzing the reception signals from each line and each conductive column. Each line of the device according to the invention comprises at one of its ends first generation means (ELG) of a first transmission signal and first reception means of a first reception signal and at its opposite end of the second generation means (ELD) of a second transmission signal and second reception means of a second reception signal, the first transmission signal and the second transmission signal being synchronous, having the same frequency, the same amplitude and the same phase.