ELECTRONIC CIGARETTE
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United States of America Patent
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Issued Date -
Oct 3, 2024
app pub date -
Dec 29, 2023
filing date -
Apr 3, 2023
priority date (Note) -
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Abstract
An electronic cigarette, including cigarette housing and micro-electromechanical system (MEMS) airflow sensor received in the cigarette housing. The MEMS airflow sensor includes a printed circuit board (PCB), an upper cover that covers PCB and encloses a receiving space together with PCB, and application specific integrated circuit (ASIC) chip and an MEMS chip with back cavity that are fixed to PCB and electrically connected to each other. The upper cover is provided with first sound hole passing therethrough. A side of PCB close to the upper cover and a side of PCB away from the upper cover are respectively provided with an upper metal layer and a lower metal layer that are exposed to a surface of PCB and are electrically connected to each other. A projection of ASIC chip on PCB at least partially falls within a range of the upper metal layer.
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