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公开(公告)号：US11543378B2
公开(公告)日：2023-01-03
申请号：US16709811
申请日：2019-12-10
Applicant: STMICROELECTRONICS PTE LTD
Inventor： Olivier Le Neel , Alexandre Le Roch , Ayoub Lahlalia , Ravi Shankar
Abstract: The present disclosure is directed to a gas sensor that includes an active sensor area that is exposed to an environment for detection of elements. The gas sensor may be an air quality sensor that can be fixed in position or carried by a user. The gas sensor includes a heater formed above chamber. The gas sensor includes an active sensor layer above the heater that forms the active sensor area. The gas sensor can include a passive conductive layer, such as a hotplate that further conducts and distributes heat from the heater to the active sensor area. The heater can include a plurality of extensions. The heater can also include a first conductive layer and a second conductive layer on the first conductive layer where the second conductive layer includes a plurality of openings to increase an amount of heat and to more evenly distribute heat from the heater to the active sensor area.
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公开(公告)号：US20190195818A1
公开(公告)日：2019-06-27
申请号：US16217631
申请日：2018-12-12
Applicant: STMICROELECTRONICS PTE LTD
Inventor： Malek BRAHEM , Hatem Majeri , Olivier Le Neel , Ravi Shankar
CPC classification number: G01N27/123 , G01N33/0031 , G01N33/0047 , G01N33/0065 , G01N33/0075
Abstract: The present disclosure is directed to a gas sensor device that includes a plurality of gas sensors. Each of the gas sensors includes a semiconductor metal oxide (SMO) film, a heater, and a temperature sensor. Each of the SMO films is designed to be sensitive to a different gas concentration range. As a result, the gas sensor device is able to obtain accurate readings for a wide range of gas concentration levels. In addition, the gas sensors are selectively activated and deactivated based on a current gas concentration detected by the gas sensor device. Thus, the gas sensor device is able to conserve power as gas sensors are on when appropriate instead of being continuously on.
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公开(公告)号：US20180017536A1
公开(公告)日：2018-01-18
申请号：US15213100
申请日：2016-07-18
Applicant: STMicroelectronics Pte Ltd
Inventor： Olivier Le Neel , Tien Choy Loh , Shian Yeu Kam , Ravi Shankar
CPC classification number: G01N33/004 , G01N25/22 , G01N33/0047
Abstract: A microelectronic device capable of detecting multiple gas constituents in ambient air can be used to monitor air quality. The microelectronic air quality monitor includes a plurality of temperature-sensitive gas sensors tuned to detect different gas species. Each gas sensor is tuned by programming an adjacent heater. An insulating air pocket formed below the sensor helps to maintain the sensor at a desired temperature. A temperature sensor may also be integrated with each gas sensor to provide additional feedback control. The heater, temperature sensor, and gas sensors are in the form of patternable thin films integrated on a single microchip. The device can be incorporated into computer workstations, smart phones, clothing, or other wearable accessories to function as a personal air quality monitor that is smaller, more accurate, and less expensive than existing air quality sensors.
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公开(公告)号：US20180017513A1
公开(公告)日：2018-01-18
申请号：US15213230
申请日：2016-07-18
Applicant: STMicroelectronics Pte Ltd
Inventor： Olivier Le Neel , Ravi Shankar , Shian Yeu Kam , Tien Choy Loh
CPC classification number: G01N27/128 , G01N33/0047
Abstract: A miniature gas analyzer capable of detecting VOC gases in ambient air as well as sensing relative humidity and ambient temperature can be used to monitor indoor air quality. The VOC gas sensor is thermally controlled and can be tuned to detect a certain gas by programming an adjacent heater. An insulating air pocket formed below the sensor helps to maintain the VOC gas sensor at a desired temperature. A local temperature sensor may be integrated with each gas sensor to provide feedback control. The heater, local temperature sensor, gas sensor(s), relative humidity sensor, and ambient temperature sensor are in the form of patternable thin films integrated on a single microchip, e.g., an ASIC. The device can be incorporated into computer workstations, smart phones, clothing, or other wearable accessories to function as a personal air quality monitor that is smaller, more accurate, and less expensive than existing air quality sensors.
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公开(公告)号：US20170261458A1
公开(公告)日：2017-09-14
申请号：US15605825
申请日：2017-05-25
Applicant: STMicroelectronics Pte Ltd.
Inventor： Olivier Le Neel , Ravi Shankar , Suman Cherian , Calvin Leung , Tien-Choy Loh , Shian-Yeu Kam
CPC classification number: G01N27/223 , G01D21/02 , G01K7/01 , G01K7/16 , G01K7/186 , G01K7/20 , G01L9/12 , G01L19/0092 , H01L25/0652 , H01L25/50 , H01L27/0248 , H01L29/7804 , H01L2924/0002 , H01L2924/00
Abstract: A semiconductor-based multi-sensor module integrates miniature temperature, pressure, and humidity sensors onto a single substrate. Pressure and humidity sensors can be implemented as capacitive thin film sensors, while the temperature sensor is implemented as a precision miniature Wheatstone bridge. Such multi-sensor modules can be used as building blocks in application-specific integrated circuits (ASICs). Furthermore, the multi-sensor module can be built on top of existing circuitry that can be used to process signals from the sensors. An integrated multi-sensor module that uses differential sensors can measure a variety of localized ambient environmental conditions substantially simultaneously, and with a high level of precision. The multi-sensor module also features an integrated heater that can be used to calibrate or to adjust the sensors, either automatically or as needed. Such a miniature integrated multi-sensor module that features low power consumption can be used in medical monitoring and mobile computing, including smart phone applications.
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Patent Agency Ranking
公开(公告)号：US20160041114A1
公开(公告)日：2016-02-11
申请号：US14887145
申请日：2015-10-19
Applicant: STMicroelectronics Pte Ltd.
Inventor： Olivier Le Neel , Ravi Shankar , Suman Cherian , Calvin Leung , Tien-Choy Loh , Shian-Yeu Kam
CPC classification number: G01N27/223 , G01D21/02 , G01K7/01 , G01K7/16 , G01K7/186 , G01K7/20 , G01L9/12 , G01L19/0092 , H01L25/0652 , H01L25/50 , H01L27/0248 , H01L29/7804 , H01L2924/0002 , H01L2924/00
Abstract: A semiconductor-based multi-sensor module integrates miniature temperature, pressure, and humidity sensors onto a single substrate. Pressure and humidity sensors can be implemented as capacitive thin film sensors, while the temperature sensor is implemented as a precision miniature Wheatstone bridge. Such multi-sensor modules can be used as building blocks in application-specific integrated circuits (ASICs). Furthermore, the multi-sensor module can be built on top of existing circuitry that can be used to process signals from the sensors. An integrated multi-sensor module that uses differential sensors can measure a variety of localized ambient environmental conditions substantially simultaneously, and with a high level of precision. The multi-sensor module also features an integrated heater that can be used to calibrate or to adjust the sensors, either automatically or as needed. Such a miniature integrated multi-sensor module that features low power consumption can be used in medical monitoring and mobile computing, including smart phone applications.
Abstract translation: 基于半导体的多传感器模块将微型温度，压力和湿度传感器集成到单个基板上。 压力和湿度传感器可以实现为电容薄膜传感器，而温度传感器实现为精密微型惠斯通电桥。 这种多传感器模块可以用作专用集成电路（ASIC）中的构建块。 此外，多传感器模块可以构建在可用于处理来自传感器的信号的现有电路之上。 使用差分传感器的集成多传感器模块可以大量同时测量各种局部环境条件，并以高精度测量。 多传感器模块还具有集成加热器，可用于自动或根据需要校准或调整传感器。 这种具有低功耗的微型集成多传感器模块可用于医疗监控和移动计算，包括智能手机应用。
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公开(公告)号：US20150001075A1
公开(公告)日：2015-01-01
申请号：US13929525
申请日：2013-06-27
Applicant: STMicroelectronics Pte Ltd.
Inventor： Olivier Le Neel , Suman Cherian , Calvin Leung , Ravi Shankar , Tien Choy Loh , Shian Yeu Kam
IPC: G01N27/416 , H01L35/34
CPC classification number: H01L35/34 , G01N27/3274 , Y10T29/49117
Abstract: A bio-fluid sensor is formed by depositing polyimide on a glass substrate. Gold and platinum are deposited on the polyimide and patterned to form fluid sensing electrodes, signal traces, and a temperature sensor. The fluid sensor is then fixed to a flexible tape and peeled off of the glass substrate.
Abstract translation: 通过在玻璃基板上沉积聚酰亚胺形成生物流体传感器。 金和铂沉积在聚酰亚胺上并图案化以形成流体感测电极，信号迹线和温度传感器。 然后将流体传感器固定到柔性带并从玻璃基板上剥离。
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公开(公告)号：US12196730B2
公开(公告)日：2025-01-14
申请号：US18485072
申请日：2023-10-11
Applicant: STMICROELECTRONICS S.r.l. , STMICROELECTRONICS PTE LTD
Inventor： Malek Brahem , Hatem Majeri , Olivier Le Neel , Ravi Shankar , Enrico Rosario Alessi , Pasquale Biancolillo
Abstract: The present disclosure is directed to a gas sensor device that detects gases with large molecules (e.g., a gas with a molecular weight between 150 g/mol and 450 g/mol), such as siloxanes. The gas sensor device includes a thin film gas sensor and a bulk film gas sensor. The thin film gas sensor and the bulk film gas sensor each include a semiconductor metal oxide (SMO) film, a heater, and a temperature sensor. The SMO film of the thin film gas sensor is an thin film (e.g., between 90 nanometers and 110 nanometers thick), and the SMO film of the bulk film gas sensor is an thick film (e.g., between 5 micrometers and 20 micrometers thick). The gas sensor device detects gases with large molecules based on a variation between resistances of the SMO thin film and the SMO thick film.
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公开(公告)号：US11808723B2
公开(公告)日：2023-11-07
申请号：US17236750
申请日：2021-04-21
Applicant: STMICROELECTRONICS PTE LTD
Inventor： Malek Brahem , Hatem Majeri , Olivier Le Neel , Ravi Shankar
CPC classification number: G01N27/123 , G01N27/125 , G01N33/0031 , G01N33/0047 , G01N33/0065 , G01N33/0075
Abstract: The present disclosure is directed to a gas sensor device that includes a plurality of gas sensors. Each of the gas sensors includes a semiconductor metal oxide (SMO) film, a heater, and a temperature sensor. Each of the SMO films is designed to be sensitive to a different gas concentration range. As a result, the gas sensor device is able to obtain accurate readings for a wide range of gas concentration levels. In addition, the gas sensors are selectively activated and deactivated based on a current gas concentration detected by the gas sensor device. Thus, the gas sensor device is able to conserve power as gas sensors are on when appropriate instead of being continuously on.
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公开(公告)号：US11009474B2
公开(公告)日：2021-05-18
申请号：US16217631
申请日：2018-12-12
Applicant: STMICROELECTRONICS PTE LTD
Inventor： Malek Brahem , Hatem Majeri , Olivier Le Neel , Ravi Shankar
Abstract: The present disclosure is directed to a gas sensor device that includes a plurality of gas sensors. Each of the gas sensors includes a semiconductor metal oxide (SMO) film, a heater, and a temperature sensor. Each of the SMO films is designed to be sensitive to a different gas concentration range. As a result, the gas sensor device is able to obtain accurate readings for a wide range of gas concentration levels. In addition, the gas sensors are selectively activated and deactivated based on a current gas concentration detected by the gas sensor device. Thus, the gas sensor device is able to conserve power as gas sensors are on when appropriate instead of being continuously on.
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