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 operations thereof in {TAIL ~ a vertical blanking period} 
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 operations thereof in { TAIL ~ 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 OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL