Image sensor

An image sensor pixel element (11) uses a three transistor (T1, T2, T4) scheme and a photosensitive element (D1). A source follower transistor (T2) senses the photosensitive element charge and transfers it to an output (10). A modified reset circuit (12) is provided which resets the photosensitive d...

Full description

Saved in:
Bibliographic Details
Main Authors TANNER, STEVE, BLANC, NICHOLAS
Format Patent
LanguageEnglish
French
German
Published 25.07.2007
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
Online AccessGet full text

Cover

More Information
Summary:An image sensor pixel element (11) uses a three transistor (T1, T2, T4) scheme and a photosensitive element (D1). A source follower transistor (T2) senses the photosensitive element charge and transfers it to an output (10). A modified reset circuit (12) is provided which resets the photosensitive device to a potential higher than the pixel supply voltage (VDD). This causes the source follower transistor (T2) to be overdriven and enables an increase output voltage swing.
Bibliography:Application Number: EP20030075989