Patents Assigned to Institut fuer Mikroelektronik Stuttgart
  • Patent number: 11257915
    Abstract: A semiconductor element includes an enhancement-type transistor structure with a layer construction including a base substrate, a first semiconductor layer, and a second semiconductor layer, which are arranged one on top of the other along a first direction. The transistor structure further has a source electrode, a gate electrode, and a drain electrode, which are spaced apart from one another along a second direction that is transverse to the first direction. The first and second semiconductor layers are formed by different group III nitride materials, such that a 2D electron gas forms in a boundary region of the first and second semiconductor layers. The first and second semiconductor layers have holes in the region of the gate electrode, between which holes multiple fins including the group III nitride materials remain. The gate electrode has a plurality of gate fingers extending into the holes.
    Type: Grant
    Filed: May 6, 2020
    Date of Patent: February 22, 2022
    Assignee: Institut für Mikroelektronik Stuttgart
    Inventors: Joachim N. Burghartz, Mohammed Alomari, Muhammad Alshahed
  • Patent number: 8508038
    Abstract: A semiconductor substrate having a first lateral dimension is combined with a flexible film piece having a second lateral dimension by arranging the semiconductor substrate in a recess of the film piece. The semiconductor substrate has circuit structures produced using lithography process steps. After the semiconductor substrate has been arranged in the recess of the film piece, a patterned layer of an electrically conductive material is produced above the semiconductor substrate and the film piece using lithography process steps. The patterned layer extends from the semiconductor substrate up to the flexible film piece and forms a number of electrically conductive contact tracks between the semiconductor substrate and the film piece.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: August 13, 2013
    Assignee: Institut fuer Mikroelektronik Stuttgart
    Inventors: Joachim N. Burghartz, Christine Harendt
  • Patent number: 8466037
    Abstract: In a method for producing a very thin chip including an integrated circuit, a circuit structure is produced in a defined section of a semiconductor wafer. The defined wafer section is subsequently released from the semiconductor wafer. For this purpose, the wafer section is firstly freed such that it is held only via local web-like connections on the remaining semiconductor wafer, which web-like connections are arranged at a lateral periphery of the wafer section. The web-like connections are subsequently severed.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: June 18, 2013
    Assignee: Institut fuer Mikroelektronik Stuttgart
    Inventors: Joachim N. Burghartz, Wolfgang Appel, Martin Zimmermann
  • Patent number: 8309924
    Abstract: A circuit arrangement for generating light-dependent and temperature-dependent signals has a number of first and second sensor elements, which generate a number of first and second electrical signals. The first and second electrical signals depend on electromagnetic radiation impinging on the circuit arrangement. The first sensor elements are designed to generate the first electrical signals in a manner dependent on electromagnetic radiation from a first wavelength range which comprises a substantial part of the visible light. The second sensor elements are designed to generate the second electrical signals in a manner dependent on electromagnetic radiation from a second wavelength range which predominantly comprises infrared radiation. The first wavelength range overlaps the second wavelength range and it therefore also comprises infrared radiation.
    Type: Grant
    Filed: May 4, 2010
    Date of Patent: November 13, 2012
    Assignee: Institut fuer Mikroelektronik Stuttgart
    Inventors: Joachim N. Burghartz, Franz Xaver Hutter, Daniel Brosch, Heinz-Gerhard Graf
  • Patent number: 7951691
    Abstract: In a method for producing a thin film chip including an integrated circuit, a semi-conductor wafer having a first surface is provided. At least one cavity is produced under a defined section of the first surface by means of porous silicon. A circuit structure is produced in the defined section. The defined wafer section is subsequently released from the semiconductor wafer by severing local web-like connections, which hold the wafer section above the cavity and on the remaining semiconductor wafer.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: May 31, 2011
    Assignee: Institut fuer Mikroelektronik Stuttgart
    Inventors: Joachim N. Burghartz, Martin Zimmermann, Wolfgang Appel
  • Patent number: 7420599
    Abstract: A device for the FPN correction of image signals which are generated by image cells of an image sensor comprises a discriminator for determining in which value range out of at least two value ranges a value of an image signal of an image cell is located at a predetermined instant of time. The result determined by the discriminator is feed to a correction device. The correction device selects correction coefficients from a plurality of sets of correction coefficients as a function of the result determined by the discriminator, and a transformation unit calculates the corrected value for the image signal by using the selected correction coefficients.
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: September 2, 2008
    Assignee: Institut für Mikroelektronik Stuttgart
    Inventors: Bernd Höfflinger, Cornelis Scherjon
  • Patent number: 7224848
    Abstract: In order to correct for fixed pattern noise in the signals of an image sensor, image signal values are read out from the pixels of the sensor. Individual correction values are added as analogue quantities to the image signal values via a signal path having a defined transfer function. Parameters which are characteristic of the defined transfer function are provided in a memory and the individual correction values are calculated in a correction value calculating unit using the parameters provided.
    Type: Grant
    Filed: October 5, 2004
    Date of Patent: May 29, 2007
    Assignee: Institut für Mikroelektronik Stuttgart
    Inventors: Bernd Höfflinger, Markus Strobel