Trench structured charge-coupled device

Details Trench structured charge-coupled device Trench structured charge-coupled device

1990-07-30

1991-11-12

Munson, Gene M.

Electrical pulse counters, pulse dividers, or shift registers: c

Counting or dividing in incremental steps

Beam type tube

377 58, H01L 2978, G11C 1928

Patent

active

050652036

ABSTRACT:
The charge transfer efficiency of a two-phase charge-coupled device cell is enhanced by providing a three-tiered built-in potential in the channel of each cell. Two lower potential tiers form a trenched potential well in the cell for storing charge. A higher potential tier between the trenched potential well of a cell and the potential well of a preceding neighbor cell provides a potential barrier preventing backflow of charge from well-to-well. The potential trench is located at the downstream end of the well adjacent a succeeding neighbor cell of the CCD.

REFERENCES:
patent: 3760202 (1973-09-01), Kosonocky
patent: 3767983 (1973-10-01), Berglund
patent: 3796932 (1974-03-01), Amelio et al.
patent: 3852799 (1974-12-01), Walden
patent: 3986198 (1976-10-01), Kosonocky
patent: 4067001 (1978-01-01), Hoffman
patent: 4245233 (1981-01-01), Lohstrom
patent: 4358890 (1982-11-01), Heller et al.
patent: 4364164 (1982-12-01), Bluzer et al.
Seguin et al., Charge Transfer Devices, Academic Press, N.Y., 1975, pp. 80-85.

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