Two-dimensional transfer in charge transfer device

US4051505A · kind A · utility

Assignee

• Bell Telephone Laboratories, Inc. · US

Inventors

• Robert H. Krambeck · South Plainfield, US
• Carlo Heinrich Sequin · New Providence, US
• Robert H. Walden · Newbury Park, US

Key dates

• Filing date: Mar 16, 1973
• Grant date: Sep 27, 1977
• Expiry date: Mar 16, 1993

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10D84/891

Abstract

Charge transfer devices which permit movement of charge carriers in two noncollinear directions in the surface plane of the device. A network of electrodes in two levels of metallization is combined with an appropriate doping of the storage medium to define the charge transfer paths. The direction of charge transfer is determined by an appropriate pulsing of the network which may take the form of different driving sequences of a number of phases in various embodiments. This concept may be used for both charge coupled and bucket brigade devices.