| 摘要 |
PURPOSE:To eliminate the reverse current phenomenon of carriers by constituting an electrode row by a pair of electrodes consisting of two of first and second electrodes and making electric resistance between a voltage source and the first electrode larger than that between the voltage source and the second electrode. CONSTITUTION:Clock pulses phi1 or phi2 are applied to each of first electrodes 31, 32... through resistors 51, 52.... The electrode width of second electrodes 41', 42' forming potential barriers is brought to approximately two third of the electrode width of the first electrodes 31, 32... shaping potential wells in a CCD to integrate the whole CCD, the resistors are connected in series with the first electrodes, and the composite resistance values of the first electrodes and the resistors are made larger than the electric resistance values of second electrode themselves. Since time constants on the rises and falls of applied voltage phi'12, phi'22 are made smaller than applied voltage phi'11, phi'21, the potential barriers are moved and formed before the potential wells are shifted and shaped. Accordingly, the directions of transfer of electrons are regulated at all times by potential barriers, thus resulting in no reverse current transfer of the electrons. |
