Young and Thompson
Charge transfer device with improved charge detection sensitivity
 In a charge transfer device, a floating gate is provided in an insulating film which is provided on a charge transfer channel layer. A buffer amplifier is connected with the floating gate, and detects signal charges in the charge transfer channel layer to generate a signal indicative of an output voltage corresponding to the signal charges. A bias gate is provided in the insulating film apart from the floating gate to cover at least a part of the floating gate. A bias applying unit applies a bias voltage to the bias gate in response to the output voltage signal such that an alternate current (AC) component of a voltage of the floating gate is substantially equal to an AC component of a voltage of the bias gate. 
NEC Corporation
H H
H01L H01L
inventional inventional
Takashi Nobuhiko
Nakano Mutoh