Projection type capacitance touch control device and method for recognizing different contact position

The invention relates to a projection-type capacitive touch control device and a method for recognizing different contact positions produced on a projection capacitance touch control panel. The methodincludes the following steps: step 1, generating a first contact group of reference values, according to a first contact position; step 2, generating a plurality of second groups of reference values,according to a second contact position, wherein, the plurality of second groups of reference values have a Real second group of reference values, and at least one Ghost second group of reference values including part of values of the first contact group of reference values; and step 3, filtering the at least one Ghost second group of reference values. The touch control device and recognizing method of the invention can realize the function of multi-point touch control detection, and can be applied on thin type or small-scale screens.