Invention Grant
- Patent Title: Pixel for time-of-flight applications
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Application No.: US16267162Application Date: 2019-02-04
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Publication No.: US11435452B2Publication Date: 2022-09-06
- Inventor: Eric A. G. Webster
- Applicant: OmniVision Technologies, Inc.
- Applicant Address: US CA Santa Clara
- Assignee: OmniVision Technologies, Inc.
- Current Assignee: OmniVision Technologies, Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: Christensen O'Connor Johnson Kindness PLLC
- Main IPC: G01S7/4865
- IPC: G01S7/4865 ; G01S7/481 ; G01S7/497 ; G01S17/42 ; G01S17/89 ; G01S17/00

Abstract:
A time-of-flight (TOF) pixel includes a semiconductor material and a photogate disposed proximate to a frontside of the semiconductor material. The photogate is positioned to transfer charge in the semiconductor material toward the frontside in response to a voltage applied to the photogate. A floating diffusion is disposed in the semiconductor material proximate to the frontside of the semiconductor material, and one or more virtual phase implants is disposed in the semiconductor material proximate to the frontside of the semiconductor material. At least one of the one or more virtual phase implants extend laterally from under the photogate to the floating diffusion to transfer the charge to the floating diffusion.
Public/Granted literature
- US20200249328A1 PIXEL FOR TIME-OF-FLIGHT APPLICATIONS Public/Granted day:2020-08-06
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