| 摘要 |
An image pickup apparatus having a charge coupled device which comprises charge transfer channels having a photoelectric conversion function and a charge transfer function of the present invention has the structure that the charge transfer channels comprise transfer electrodes formed and arranged on a channel layer for transferring signal charges along with a charge transfer direction and a barrier layer formed on a part of the channel layer region underneath the transfer electrodes, and further comprising a driver for applying the CCD, in a case of taking image, a pinning voltage to the all transfer electrodes, whereby signal charges generated by incident light are accumulated in potential wells equivalent to pixels generated in the channel layer region where the barrier layer is not formed, and in a case of transferring charges, for applying two-phase clock having a "L" level of a pinning voltage and a "H" level of a predetermined voltage higher than the pinning voltage is applied to the transfer electrodes to mix signal charges accumulated in the adjacent two potential wells, whereby each mixed signal is isolated and transferred.
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