means for applying a potential to said electrodes after a predetermined period of time to partially catch injected charge beneath said electrodes and to use caught charge as a bias charge, wherein {HEAD ~ said three means} carry out {TAIL ~ operations} thereof in a vertical blanking period 
carry out
means for applying a potential to said electrodes after a predetermined period of time to partially catch injected charge beneath said electrodes and to use caught charge as a bias charge , wherein { HEAD ~ said three means } carry out { TAIL ~ operations } thereof in a vertical blanking period
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH