Split floating diffusion pixel layout design

US12356741B2 · kind B2 · utility

Assignee

• OmniVision Technologies, Inc. · US

Inventor

• Sangjoo Lee · Suwon-si, KR

Key dates

• Filing date: Oct 31, 2022
• Grant date: Jul 8, 2025
• Expiry date: Nov 18, 2043

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10F39/813

Abstract

A pixel array includes pixel circuits including a first pixel circuit having a first split floating diffusion receiving charge from first and third photodiodes through first and third transfer transistors, and a second split floating diffusion receiving the charge from second and fourth photodiodes through second and fourth transfer transistors. A first shared gate structure includes gates of first transfer transistors of first and second pixel circuits. A third shared gate structure includes gates of third transfer transistors of the first and second pixel circuits. A second shared gate structure includes gates of second transfer transistors of first and third pixel circuit. A fourth shared gate structure includes gates of fourth transfer transistors the first and third pixel circuits.