Image sensor with improved settling time

US10580809B2 · kind B2 · utility

Assignee

• STMicroelectronics (Grenoble 2) SAS · FR

Inventor

• Cedric Tubert · Saint-Égrève, FR

Key dates

• Filing date: Dec 7, 2016
• Grant date: Mar 3, 2020
• Expiry date: Jan 5, 2038

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10F39/8037

Abstract

A circuit includes a pixel structure having a photo sensitive element and a read transistor. The read transistor includes a first load path terminal coupled to the photo sensitive element, and a second load path terminal coupled to a voltage bus. The circuit also includes a first transistor having a third load path terminal coupled to a power supply node, and a fourth load path terminal configured to be coupled to a current source. The circuit further includes a first control switch coupled between the voltage bus and the fourth load path terminal of the first transistor.