Detection device and display device

A detection device comprising:

• a plurality of first electrodes;
• a plurality of second electrodes disposed facing or being close to the first electrodes;
• a first drive circuit configured to supply a first drive signal to the first electrodes;
• a second drive circuit configured to supply a second drive signal to the second electrodes, the second drive signal having a same waveform as that of the first drive signal and in synchronization with the first drive signal;
• and
• a detector configured to detect a first detection signal output from the first electrodes in response to a supply of the second drive signal to the second electrodes, a second detection signal output from the first electrodes in response to a supply of the first drive signal to the first electrodes and a supply of the second drive signal to the second electrodes, and a third detection signal output from the first electrodes in response to a supply of the first drive signal to the first electrodes, wherein
• the detector is configured to detect the second detection signal and the third detection signal when a detection value of the first detection signal is lower than a threshold, and to correct a detection value of the second detection signal on a basis of the detection value of the third detection signal.