| 摘要 |
PROBLEM TO BE SOLVED: To provide a charge transfer device in which transfer efficiency of a micro signal charge is improved by shortening the effective transfer distance of signal charge. SOLUTION: A charge transfer device comprises first and second potential regions 102, 103 formed on a P type semiconductor substrate 101, first and second conductive electrodes 107a, 107b, 108a, 108b formed on insulating film 106, and, first and second final conductive electrodes 207a, 208a. Channel width is decreased toward the output side in the potential region immediately below the final charge transfer electrodes 207a, 208a contiguous to the output electrode. The first potential region 102 and third and fourth deeper potential regions 203a, 203b are provided immediately below the final charge transfer electrodes 207a, 208a.
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