A CPD image sensor with buried-channel priming couplers

Author

Terakawa, Sumio ; Kozono, Toshiwki ; Matsuda, Yuji ; Senda, Kohji ; Yamada, Takahiro ; Murozono, Izumi ; Hiroshima, Yoshimitsu ; Horii, Kenju ; Takamura, Tohru ; Kunii, Takao ; Mizuno, Hiroyuki

Author_Institution

Matsushita Electronics Corporation, Osaka, Japan

Volume

32

Issue

8

fYear

1985

fDate

8/1/1985 12:00:00 AM

Firstpage

1490

Lastpage

1494

Abstract

A 398 (H) × 496 (V)-element CPD image sensor with buried-channel charge-priming-transfer (CPT) couplers for ⅔-in format has been developed. The buried-channel CPT structures by use of the external bias change has been adopted based on the theoretical consideration to suppress random noise and to improve vertical transfer efficiency for small signal charge. The vertical transfer efficiency even for small signal charges was improved up from 70 to 95 percent or more by use of the external bias charge in addition to priming charge. It was found that total random noise in the new image sensor corresponds to ∼ 400 electrons, which is about half of that in a conventional CPD image sensor with surface-channel CPT couplers.

Keywords

Circuits; Couplers; Electrodes; Electrons; Image sensors; Image storage; Semiconductor device noise; Sensor arrays; Sensor phenomena and characterization; Switches;

fLanguage

English

Journal_Title

Electron Devices, IEEE Transactions on

Publisher

ieee

ISSN

0018-9383

Type

jour

DOI

10.1109/T-ED.1985.22151

Filename

1484897