Charge transfer image pickup device

Details Charge transfer image pickup device Charge transfer image pickup device

1995-02-06

1998-04-21

Tran, Minh-Loan

Active solid-state devices (e.g., transistors, solid-state diode

Field effect device

Charge transfer device

257222, 257225, 257229, 257233, 257249, 257250, 257443, H01L 27148

Patent

active

057420815

ABSTRACT:
A charge transfer image pickup device is disclosed. One embodiment of the device includes a plurality of photoelectric conversion elements for producing signal charges in response to light applied thereto. A vertical charge transfer part including a first region having a first well layer and for transferring the signal charges produced by the photoelectric conversion elements is provided. A horizontal charge transfer part including a second region having a second well layer and coupled to the vertical charge transfer part to receive transferred signal charges by using a terminal vertical transfer electrode of the vertical charge transfer part is also included. The first and second well layers partially overlap to form an overlap section that does not extend over the terminal vertical transfer electrode in the direction from the second region to the first region. A barrier layer is selectively formed in the first region such that the potential profile of the device descends gradually in the direction from the first region to the second region.

REFERENCES:
patent: 5323034 (1994-06-01), Furumiya

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