US Patent No. 10,973,119
ELECTRONIC CIRCUIT BOARD, ACCELERATION SENSOR, INCLINOMETER, INERTIAL NAVIGATION DEVICE, STRUCTURE MONITORING DEVICE, AND VEHICLE
| Patent No. | 10,973,119 |
|---|---|
| Issue Date | April 06, 2021 |
| Title | Electronic Circuit Board, Acceleration Sensor, Inclinometer, Inertial Navigation Device, Structure Monitoring Device, And Vehicle |
| Inventorship | Kenta Sato, Shiojiri (JP) Yasushi Yoshikawa, Chino (JP) |
| Assignee | Seiko Epson Corporation |
Claim of US Patent No. 10,973,119
1. An electronic circuit board comprising:a substrate having a multilayer structure including at least one ground layer; and
an oscillation circuit provided on the substrate,
wherein the oscillation circuit includes an oscillator and a circuit including an amplifier electrically connected to each other, the oscillator and the amplifier each including an electrically conductive bump, and
a ground layer closest to the oscillation circuit in the multilayer structure includes a plurality of apertures formed therein that correspond to locations of the electrically conducive bumps in a plan view of the electronic circuit board,
wherein edges of the apertures entirely surround and are spaced apart from the electrically conductive bumps in the plan view of the electronic circuit board.
an oscillation circuit provided on the substrate,
wherein the oscillation circuit includes an oscillator and a circuit including an amplifier electrically connected to each other, the oscillator and the amplifier each including an electrically conductive bump, and
a ground layer closest to the oscillation circuit in the multilayer structure includes a plurality of apertures formed therein that correspond to locations of the electrically conducive bumps in a plan view of the electronic circuit board,
wherein edges of the apertures entirely surround and are spaced apart from the electrically conductive bumps in the plan view of the electronic circuit board.