Invention Grant
- Patent Title: PCB optical isolation by nonuniform catch pad stack
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Application No.: US17378143Application Date: 2021-07-16
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Publication No.: US11582867B2Publication Date: 2023-02-14
- Inventor: Augusto Tazzoli , Blaise Gassend
- Applicant: Waymo LLC
- Applicant Address: US CA Mountain View
- Assignee: Waymo LLC
- Current Assignee: Waymo LLC
- Current Assignee Address: US CA Mountain View
- Agency: McDonnell Boehnen Hulbert & Berghoff LLP
- Main IPC: H05K1/02
- IPC: H05K1/02 ; H05K1/11 ; G01S17/42 ; G01S7/481 ; G01S17/931

Abstract:
A Printed Circuit Board (PCB) includes a via extending through at least one layer of the PCB. The PCB may also include a first catch pad connected to the via and located within a first metal layer of the PCB. The first catch pad may have a first size. The PCB may further include a second catch pad connected to the via and located within a second metal layer of the PCB. The second catch pad may have a second size greater than the first size. The second catch pad may overlap horizontally with a portion of a metallic feature in the first metal layer to obstruct light incident on a first side of the PCB from transmission to a second side of the PCB through a region of dielectric material near the via.
Public/Granted literature
- US20210345483A1 PCB Optical Isolation By Nonuniform Catch Pad Stack Public/Granted day:2021-11-04
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