Ultrasonic touch sensor
    101.
    发明授权

    公开(公告)号:US12210706B2

    公开(公告)日:2025-01-28

    申请号:US17850026

    申请日:2022-06-27

    Abstract: An ultrasonic touch sensor is proposed for attachment to a casing, having a semiconductor chip including a substrate side and a component side, the semiconductor chip including an ultrasonic transducer element and the ultrasonic transducer element being arranged on the component side, having an acoustic coupling medium covering the semiconductor chip at least in the region of the ultrasonic transducer element, having electrical contact elements for controlling the ultrasonic transducer element, and the electrical contact elements being arranged on the component side of the semiconductor chip.

    Low profile transducer module
    108.
    发明授权

    公开(公告)号:US11267698B2

    公开(公告)日:2022-03-08

    申请号:US16157142

    申请日:2018-10-11

    Abstract: A transducer structure is disclosed. The transducer structure may include a substrate with a MEMS structure located on a first side of the substrate and a lid coupled to the first side of the substrate and covering the MEMS structure. The substrate may include an electric contact which is laterally displaced from the lid on the first side of the substrate and electrically coupled to the MEMS structure.

    Photo-acoustic gas sensor with optimal reference path length

    公开(公告)号:US11143626B2

    公开(公告)日:2021-10-12

    申请号:US16245873

    申请日:2019-01-11

    Inventor: Horst Theuss

    Abstract: A photo-acoustic gas sensor may include a detector component. The detector component includes a package that defines a reference volume. The reference volume houses a reference gas. The detector component includes a pressure sensing element to measure an amount of pressure in the reference volume. The amount of pressure in the reference volume depends on absorption of a wavelength of light by the reference gas in the reference volume. A sensitivity of the pressure sensing element when measuring the amount of pressure in the reference volume depends on a length of a reference path associated with the reference volume. The detector component includes a reference path structure that causes the length of the reference path to be less than or equal to 0.5 millimeters.

    Detector module for a photo-acoustic gas sensor

    公开(公告)号:US11105776B2

    公开(公告)日:2021-08-31

    申请号:US16534143

    申请日:2019-08-07

    Abstract: A detector module is disclosed. In one example, the detector module is for a photo-acoustic gas sensor and comprises a first substrate made of a semiconductor material and comprising a first surface and a second surface opposite to the first surface, a second substrate comprising a third surface, a fourth surface opposite to the third surface, and a first recess formed in the fourth surface. The second substrate is connected with its fourth surface to the first substrate so that the first recess forms an airtight-closed first cell which is filled with a reference gas and a pressure sensitive element comprising a membrane disposed in contact with the reference gas. The detector module is further configured such that a beam of light pulses passes through the first substrate and thereby enters the first cell.

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