G01R33/09

Power Semiconductor Module with Accessible Metal Clips

A power semiconductor module includes a substrate with a metallization layer that is structured. A semiconductor chip having a first side bonded to the metallization layer. A metal clip, which is a strip of metal, has a first planar part bonded to a second side of the semiconductor chip opposite to the first side. The metal clip also has a second planar part bonded to the metallization layer. A mold encapsulation at least partially encloses the substrate and the metal clip. The mold encapsulation has a recess approaching towards the first planar part of the metal clip. The semiconductor chip is completely enclosed by the mold encapsulation, the substrate and the metal clip and the first planar part of the metal clip is at least partially exposed by the recess. A sensor is accommodated in the recess.

Angle sensor using eddy currents

A magnetic field angle sensor includes a coil configured to generate a magnetic field that induces an eddy current in a rotatable target, a first magnetic field sensing structure positioned proximate to the coil and configured to detect a reflected magnetic field generated by the eddy current induced in the target, a second magnetic field sensing structure positioned proximate to the coil and configured to detect the reflected magnetic field generated by the eddy current induced in the target, wherein the first and second magnetic field sensing structures are configured to detect quadrature components of the reflected magnetic field, and a processing module configured to process the reflected magnetic field detected by the first and second magnetic field sensing structures for determining an angular position of the target.

System and method for GMR-based detection of biomarkers

A system for detecting analytes in a test sample, and a method for processing the same, is provided. The system includes a cartridge reader unit that has a control unit and a pneumatic system, and a cartridge assembly that prepares the samples with mixing material(s) through communication channels. The assembly has a memory chip with parameters for preparing the sample and at least one sensor (GMR sensor) for detecting analytes in the sample. The assembly is pneumatically and electronically mated with the reader unit via a pneumatic interface and an electronic interface such that the parameters may be implemented via the control unit. The pneumatic system is contained within the unit and has pump(s) and valve(s) for selectively applying fluid pressure to the pneumatic interface of the assembly, and thus through the communication channels, to move the sample and mixing material(s) through and to sensor. The control unit activates the pneumatic system to prepare the sample and provide it to the sensor for detecting analytes, and also processes measurements from the sensor to generate test results.

System and method for GMR-based detection of biomarkers

A system for detecting analytes in a test sample, and a method for processing the same, is provided. The system includes a cartridge reader unit that has a control unit and a pneumatic system, and a cartridge assembly that prepares the samples with mixing material(s) through communication channels. The assembly has a memory chip with parameters for preparing the sample and at least one sensor (GMR sensor) for detecting analytes in the sample. The assembly is pneumatically and electronically mated with the reader unit via a pneumatic interface and an electronic interface such that the parameters may be implemented via the control unit. The pneumatic system is contained within the unit and has pump(s) and valve(s) for selectively applying fluid pressure to the pneumatic interface of the assembly, and thus through the communication channels, to move the sample and mixing material(s) through and to sensor. The control unit activates the pneumatic system to prepare the sample and provide it to the sensor for detecting analytes, and also processes measurements from the sensor to generate test results.

Magnetic sensor

A magnetic sensor whose output characteristic is less sensitive to the environmental temperature is provided. Magnetic sensor 1 has free layer 24 whose magnetization direction changes in response to an external magnetic field, pinned layer 22 whose magnetization direction is fixed with respect to the external magnetic field, spacer layer 23 that is located between pinned layer 22 and free layer 24 and that exhibits a magnetoresistance effect, and at least one magnet film 25 that applies a bias magnetic field to free layer 24. The film thickness of the magnet film is 15 nm or more and 50 nm or less. The relationship of 0.7≤T.sub.C_HM/T.sub.C_FL≤1.05 is satisfied, where T.sub.C_HM is Curie temperature of the magnet film, and T.sub.C_FL is Curie temperature of the free layer.

Magnetic sensor

A magnetic sensor whose output characteristic is less sensitive to the environmental temperature is provided. Magnetic sensor 1 has free layer 24 whose magnetization direction changes in response to an external magnetic field, pinned layer 22 whose magnetization direction is fixed with respect to the external magnetic field, spacer layer 23 that is located between pinned layer 22 and free layer 24 and that exhibits a magnetoresistance effect, and at least one magnet film 25 that applies a bias magnetic field to free layer 24. The film thickness of the magnet film is 15 nm or more and 50 nm or less. The relationship of 0.7≤T.sub.C_HM/T.sub.C_FL≤1.05 is satisfied, where T.sub.C_HM is Curie temperature of the magnet film, and T.sub.C_FL is Curie temperature of the free layer.

Position detection element and position detection apparatus using same
11578996 · 2023-02-14 · ·

A position detection element includes an exchange coupling film having a large exchange coupling magnetic field and a position detection apparatus showing good detection accuracy in a high temperature environment. The position detection element includes an exchange coupling film composed of a fixed magnetic layer and an antiferromagnetic layer stacked on the fixed magnetic layer. The antiferromagnetic layer includes an X(Cr—Mn) layer containing X that is one or more elements selected from the group consisting of platinum group metals and Ni and containing Mn and Cr. The X(Cr—Mn) layer includes a PtMn layer as a first region relatively closer to the fixed magnetic layer and a PtCr layer as a second region relatively farther from the fixed magnetic layer. The content of Mn in the first region is higher than the content of Mn in the second region.

Devices and methods for frequency- and phase-based detection of magnetically-labeled molecules using spin torque oscillator (STO) sensors

Devices and methods for molecule detection using such devices are disclosed herein. A molecule detection device comprises at least one fluidic channel configured to receive molecules to be detected, a sensor comprising a spin torque oscillator (STO) and encapsulated by a material separating the sensor from the at least one fluidic channel, and detection circuitry coupled to the sensor. At least some of the molecules to be detected are labeled by magnetic nanoparticles (HNPs). A surface of the material provides binding sites for the molecules to be detected. The detection circuitry is configured to detect a frequency or frequency noise of a radio-frequency (RF) signal generated by the STO in response to presence or absence of at least one MNP coupled to one or more binding sites associated with the sensor.

Three-axis magnetic sensor
11579209 · 2023-02-14 ·

A three-axis magnetic sensor apparatus is described that is processed together into a single chip, with high performance, low cost, as well as small size. The three-axis magnetic sensor apparatus include a substrate, a two-axis magnetic sensing structure and a single-axis sensing structure. The two-axis sensing magnetic structure consisting of two shielded Wheatstone bridge configurations in conjunction with an annular or semi annular magnetic flux-guiding structure, and the single-axis sensing structure consisting of a push-pull Wheatstone bridge in conjunction with a flux guide that is capable of generating a fringe field whose horizontal component is proportional to the vertical component of an external magnetic field. The two-axis magnetic sensing structure and the single-axis structure are processed together into a single chip, and can be used to measure respectively X, Y and Z components of external magnetic fields.

Three-axis magnetic sensor
11579209 · 2023-02-14 ·

A three-axis magnetic sensor apparatus is described that is processed together into a single chip, with high performance, low cost, as well as small size. The three-axis magnetic sensor apparatus include a substrate, a two-axis magnetic sensing structure and a single-axis sensing structure. The two-axis sensing magnetic structure consisting of two shielded Wheatstone bridge configurations in conjunction with an annular or semi annular magnetic flux-guiding structure, and the single-axis sensing structure consisting of a push-pull Wheatstone bridge in conjunction with a flux guide that is capable of generating a fringe field whose horizontal component is proportional to the vertical component of an external magnetic field. The two-axis magnetic sensing structure and the single-axis structure are processed together into a single chip, and can be used to measure respectively X, Y and Z components of external magnetic fields.