CMOS shared amplifier pixels with output signal wire below floating diffusion interconnect for reduced floating diffusion capacitance

US8253214B2 · kind B2 · utility

Assignee

• OmniVision Technologies, Inc. · US

Inventors

• Robert M. Guidash · Rochester, US
• Ravi Mruthyunjaya · Penfield, US
• Weize Xu · Beijing, CN

Key dates

• Filing date: May 25, 2006
• Grant date: Aug 28, 2012
• Expiry date: Oct 16, 2029

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10F39/803

Abstract

An image sensor includes a unit cell having a plurality of pixels; the unit cell comprising an amplifier input transistor that is shared by the plurality of pixels; a plurality of floating diffusions that are joined by a floating diffusion interconnect layer and are connected to the amplifier input transistor; and an interconnect layer which forms an output signal wire which shields the floating diffusion interconnect layer.