APPARATUS AND METHOD FOR CAPACITIVE TOUCH DETECTION

The invention relates to a device (1) for capacitive touch detection, comprising: at least one touch electrode (2, 2 ', 2' ', 2' '', 21, 22) with a capacitance (C) for detecting a change in capacitance when an object (3) approaches the touch electrode (2, 2 ', 2' ', 2''', 21, 22); a signal generator (4) for generating at least one predetermined periodic signal (5) having a predetermined frequency and phase, which is electrically fed to the touch electrodes (2, 2 ', 2' ', 2' '', 21, 22); and an electronic computing unit (6). The signal generator (4) is electrically coupled to the touch electrodes (2, 2 ', 2' ', 2' '', 21, 22) via the non-reactive resistor (R) such that the resistor (R) and the capacitor (C) of the touch electrodes (2, 2 ', 2'', 2' '', 21, 22) form an RC filter for a signal (5) provided to the touch electrodes (2, 2 ', 2'', 2' '', 21, 22), where the computing unit (6) is configured to receive a signal (7) filtered by the RC filter and to evaluate a deviation of the filtered signal (7) from the