{HEAD ~ The sensing electrodes} contained in each pixel group 210 or 220 have {TAIL ~ the same voltage}, and this voltage can be represented by the following equation 1: 
have
{ HEAD ~ The sensing electrodes } contained in each pixel group 210 or 220 have { TAIL ~ the same voltage } , and this voltage can be represented by the following equation 1 :
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH