Solid state imaging device having sliding potential gradient

Details Solid state imaging device having sliding potential gradient Solid state imaging device having sliding potential gradient

1994-12-07

1996-12-31

Mintel, William

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

Field effect device

Charge transfer device

257232, 257233, 257240, 257243, H01L 27148, H01L 29768

Patent

active

055896987

ABSTRACT:
A charge transfer device for making a compact solid state imaging apparatus. The device has a sloping potential gradient in the vertical to horizontal charge coupling region to achieve an increasing fringe electrical field without increasing the actual electrode width or the actual channel widths. A first region, serving as the charge storage region, at the terminal end of the vertical charge transfer section, is broadened gradually towards the horizontal charge transfer section while narrowing the terminal end of the second region, serving as the charge barrier region, towards the horizontal charge transfer section. The effective width changes of the storage and barrier regions take place in a complementary manner within one vertical channel section so that the actual width of the channel section remains constant.

REFERENCES:
patent: 4987466 (1991-01-01), Shibata et al.
patent: 5182622 (1993-01-01), Iizuka et al.
patent: 5286989 (1994-02-01), Yonemoto
patent: 5365093 (1994-11-01), Kuno

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