Patents by Inventor Andreas Plössl

Andreas Plössl has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20100117111
    Abstract: An optoelectronic component with a semiconductor body includes an active region suitable for generating radiation, and two electrical contacts arranged on the semiconductor body. The contacts are electrically connected to the active region. The contacts each have a connecting face that faces away from the semiconductor body. The contact faces are located on a connection side of the component and a side of the component that is different from the connection side is mirror-coated. A method for the manufacture of multiple components of this sort is also disclosed.
    Type: Application
    Filed: April 25, 2008
    Publication date: May 13, 2010
    Inventors: Stefan Illek, Andreas Ploessl, Alexander Heindl, Patrick Rode, Dieter Eissler
  • Publication number: 20100112789
    Abstract: For semiconductor chips using thin film technology, an active layer sequence is applied to a growth substrate, on which a reflective electrically conductive contact material layer is then formed. The active layer sequence is patterned to form active layer stacks, and reflective electrically conductive contact material layer is patterned to be located on each active layer stack. Then, a flexible, electrically conductive foil is applied to the contact material layers as an auxiliary carrier layer, and the growth substrate is removed.
    Type: Application
    Filed: January 8, 2010
    Publication date: May 6, 2010
    Inventors: Andreas PLOESSL, Stephan KAISER, Volker HARLE, Berthold HAHN
  • Patent number: 7696078
    Abstract: A method for producing an electrical contact of an optoelectronic semiconductor chip (1), comprising providing a mirror layer (2), comprised of a metal or metal alloy, over the semiconductor chip; providing a protective layer (3) over said mirror layer; providing a layer sequence of a barrier layer and a coupling layer (5) over said protective layer; and providing a solder layer (8) over said layer sequence.
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: April 13, 2010
    Assignee: Osram Opto Semiconductors GmbH
    Inventors: Wilhelm Stein, Michael Fehrer, Johannes Baur, Matthias Winter, Andreas Ploessl, Stephan Kaiser, Berthold Hahn, Franz Eberhard
  • Patent number: 7649266
    Abstract: For semiconductor chips (1) using thin film technology, an active layer sequence (20) is applied to a growth substrate (3), on which a reflective electrically conductive contact material layer (40) is then formed. The active layer sequence is patterned to form active layer stacks (2), and reflective electrically conductive contact material layer (40) is patterned to be located on each active layer stack (2). Then, a flexible, electrically conductive foil (6) is applied to the contact material layers as an auxiliary carrier layer, and the growth substrate is removed.
    Type: Grant
    Filed: August 1, 2005
    Date of Patent: January 19, 2010
    Assignee: Osram Opto Semiconductors GmbH
    Inventors: Andreas Ploessl, Stephan Kaiser, Volker Härle, Berthold Hahn
  • Publication number: 20090302429
    Abstract: A device comprising a first component (5) having a first surface (6), a second component (8) having a second surface (9) and a connection layer (7) between the first surface (6) of the first component (5) and the second surface (9) of the second component (8), wherein the connection layer (7) comprises an electrically insulating adhesive and there is an electrically conductive contact between the first surface (6) of the first component (5) and the second surface (9) of the second component (8).
    Type: Application
    Filed: May 16, 2007
    Publication date: December 10, 2009
    Applicant: OSRAM Opto Semiconductors GmbH
    Inventors: Andreas Plössl, Stefan Illek
  • Patent number: 7598529
    Abstract: A semiconductor chip (1), to which a layer sequence (2) intended for the production of a soldered connection has been applied. The layer sequence (2) comprises a solder layer (15) and an oxidation prevention layer (17), which follows the solder layer (15) as seen from the semiconductor chip (1). A barrier layer (16) is included between the solder layer (15) and the oxidation prevention layer (17). This prevents a constituent of the solder layer (15) from diffusing through the oxidation prevention layer (17) prior to the soldering operation, where it would effect oxidation that is disadvantageous for producing a soldered connection.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: October 6, 2009
    Assignee: Osram Opto Semiconductors GmbH
    Inventors: Andreas Ploessl, Stefan Illek, Vincent Grolier
  • Patent number: 7588998
    Abstract: A method for producing a semiconductor component, in particular a thin-film component, a semiconductor layer being separated from a substrate by irradiation with a laser beam having a plateaulike spatial beam profile. Furthermore, the semiconductor layer, prior to separation, is applied to a carrier with an adapted thermal expansion coefficient. The method is suitable in particular for semiconductor layers containing a nitride compound semiconductor.
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: September 15, 2009
    Assignee: Osram Opto Semiconductor GmbH
    Inventors: Michael Fehrer, Berthold Hahn, Volker Härle, Stephan Kaiser, Frank Otte, Andreas Plössl
  • Publication number: 20090218591
    Abstract: A method for bonding several layers, which comprise at least one thermally bondable material, by means of a joint layer produced with the aid of thermocompression at least one of the layers comprising a semiconductor material, as well as to a correspondingly manufactured device. Also disclosed is a method for manufacturing an organic light-emitting diode and an organic light-emitting diode that is encapsulated between two cover layers with the aid of thermocompression.
    Type: Application
    Filed: September 22, 2006
    Publication date: September 3, 2009
    Inventors: Vincent Grolier, Andreas Plössl, Marianne Renner
  • Patent number: 7547921
    Abstract: An optoelectronic semiconductor chip has an active layer containing a photon-emitting zone. The active layer is attached to a carrier member at a bonding side of the active layer. The active layer has at least one recess therein with a cross-sectional area that decreases with increasing depth into said active layer proceeding from said bonding side.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: June 16, 2009
    Assignee: Osram Opto Semiconductors GmbH
    Inventors: Stefan Illek, Klaus Streubel, Walter Wegleiter, Andreas Ploessl, Ralph Wirth
  • Publication number: 20080268560
    Abstract: Manufacturing methods for a thin-film semiconductor chip based on a III/V-III/V semiconductor compound material and capable of generating electromagnetic radiation. In one method, a succession of active layers is applied to a growth substrate. Applied to the reverse side of the active layers is a dielectric layer. Laser energy is introduced into a defined volumetric section of the dielectric layer to form an opening. Subsequently, a metallic layer is applied to form a succession of reflective layers, to fill the opening with metallic material and to create a reverse-side electrically conductive contact point to the reverse side of the succession of active layers. Pursuant to another method, a succession of reflective layers is applied to the active layers and laser energy is applied to a volumetric section of the reflective layers, to create a reverse-side electrically conductive contact point.
    Type: Application
    Filed: September 23, 2005
    Publication date: October 30, 2008
    Inventors: Andreas Ploessl, Wilhelm Stein
  • Patent number: 7435605
    Abstract: A method for fabricating a component having an electrical contact region on an n-conducting AlGaInP-based or AlGaInAs-based outer layer of an epitaxially grown semiconductor layer sequence, in which electrical contact material, which includes Au and at least one dopant, is applied and the outer layer is then annealed. The dopant contains at least one element selected from the group consisting of Ge, Si, Sn and Te. Also, a component is disclosed which includes an epitaxially grown semiconductor layer sequence with an active zone which emits electromagnetic radiation, the semiconductor layer sequence having an n-conducting AlGaInP-based or AlGaInAs-based outer layer, to which an electrical contact region is applied using the method described.
    Type: Grant
    Filed: July 9, 2007
    Date of Patent: October 14, 2008
    Assignee: Osram Opto Semiconductors GmbH
    Inventors: Stefan Illek, Peter Stauss, Andreas Ploessl, Gudrun Diepold, Ines Pietzonka, Wilhelm Stein, Ralph Wirth, Walter Wegleiter
  • Publication number: 20070264740
    Abstract: A method for fabricating a component having an electrical contact region on an n-conducting AlGaInP-based or AlGaInAs-based outer layer of an epitaxially grown semiconductor layer sequence, in which electrical contact material, which includes Au and at least one dopant, is applied and the outer layer is then annealed. The dopant contains at least one element selected from the group consisting of Ge, Si, Sn and Te. Also, a component is disclosed which includes an epitaxially grown semiconductor layer sequence with an active zone which emits electromagnetic radiation, the semiconductor layer sequence having an n-conducting AlGaInP-based or AlGaInAs-based outer layer, to which an electrical contact region is applied using the method described.
    Type: Application
    Filed: July 9, 2007
    Publication date: November 15, 2007
    Inventors: Stefan Illek, Peter Stauss, Andreas Ploessl, Gudrun Diepold, Ines Pietzonka, Wilhelm Stein, Ralph Wirth, Walter Wegleiter
  • Patent number: 7242034
    Abstract: A method for fabricating a component having an electrical contact region on an n-conducting AlGaInP-based or AlGaInAs-based outer layer of an epitaxially grown semiconductor layer sequence, in which electrical contact material, which includes Au and at least one dopant, is applied and the outer layer is then annealed. The dopant contains at least one element selected from the group consisting of Ge, Si, Sn and Te. Also, a component is disclosed which includes an epitaxially grown semiconductor layer sequence with an active zone which emits electromagnetic radiation, the semiconductor layer sequence having an n-conducting AlGaInP-based or AlGaInAs-based outer layer, to which an electrical contact region is applied using the method described.
    Type: Grant
    Filed: February 2, 2004
    Date of Patent: July 10, 2007
    Assignee: Osram Opto Semiconductors GmbH
    Inventors: Stefan Illek, Peter Stauss, Andreas Ploessl, Gudrun Diepold, Ines Pietzonka, Wilhelm Stein, Ralph Wirth, Walter Wegleiter
  • Publication number: 20070117235
    Abstract: A method for producing an electrical contact of an optoelectronic semiconductor chip (1), comprising providing a mirror layer (2), comprised of a metal or metal alloy, over the semiconductor chip; providing a protective layer (3) over said mirror layer; providing a layer sequence of a barrier layer and a coupling layer (5) over said protective layer; and providing a solder layer (8) over said layer sequence.
    Type: Application
    Filed: January 16, 2007
    Publication date: May 24, 2007
    Inventors: Wilhelm Stein, Michael Fehrer, Johannes Baur, Matthias Winter, Andreas Ploessl, Stephan Kaiser, Berthold Hahn, Franz Eberhard
  • Patent number: 7164158
    Abstract: An electrical contact for an optoelectronic device which includes a mirror layer (2) of a metal or a metal alloy, a protective layer (3), which serves for reducing the corrosion of the mirror layer (2), a barrier layer (4), a coupling layer (5), and a solder layer (8). A contact of this type is distinguished by high reflectivity, good ohmic contact with respect to the semiconductor, good adhesion on the semiconductor and good adhesion of the layers forming the contact with one another, good thermal stability, high stability with respect to environmental influences, and also solderability and patternability.
    Type: Grant
    Filed: February 26, 2004
    Date of Patent: January 16, 2007
    Assignee: Osram Opto Semiconductors GmbH
    Inventors: Wilhelm Stein, Michael Fehrer, Johannes Baur, Matthias Winter, Andreas Ploessl, Stephan Kaiser, Berthold Hahn, Franz Eberhard
  • Publication number: 20060234482
    Abstract: A semiconductor chip (1), to which a layer sequence (2) intended for the production of a soldered connection has been applied. The layer sequence (2) comprises a solder layer (15) and an oxidation prevention layer (17), which follows the solder layer (15) as seen from the semiconductor chip (1). A barrier layer (16) is included between the solder layer (15) and the oxidation prevention layer (17). This prevents a constituent of the solder layer (15) from diffusing through the oxidation prevention layer (17) prior to the soldering operation, where it would effect oxidation that is disadvantageous for producing a soldered connection.
    Type: Application
    Filed: March 30, 2006
    Publication date: October 19, 2006
    Applicant: Osram Opto Semiconductors GmbH
    Inventors: Andreas Ploessl, Stefan Illek, Vincent Grolier
  • Patent number: 7115907
    Abstract: A radiation-emitting semiconductor component with a layer structure (12) which includes a photon-emitting active layer (16), an n-doped cladding layer (14) and a p-doped cladding layer (18), a contact connected to the n-doped cladding layer (14) and a mirror layer (20) connected to the p-doped cladding layer (18). The mirror layer (20) is formed by an alloy of silver comprising one or more metals selected from the group consisting of Ru, Rh, Pd, Au, Os, Ir, Pt, Cu, Ti, Ta and Cr.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: October 3, 2006
    Assignee: Osram Opto Semiconductors GmbH
    Inventors: Johannes Baur, Dominik Eisert, Michael Fehrer, Berthold Hahn, Andreas Ploessl, Wilhelm Stein
  • Patent number: 7109527
    Abstract: A semiconductor chip, particularly a radiation-emitting semiconductor chip, comprises an active thin-film layer in which a photon-emitting zone is formed, and a carrier substrate for the thin-film layer is arranged at a side of the thin-film layer faces away from the emission direction and is connected to it. At least one cavity via which a plurality of mesas is fashioned at the boundary between carrier substrate and thin-film layer is fashioned in the active thin-film layer proceeding from the carrier substrate.
    Type: Grant
    Filed: August 8, 2001
    Date of Patent: September 19, 2006
    Assignee: Osram GmbH
    Inventors: Stefan Illek, Andreas Plössl, Klaus Streubel, Walter Wegleiter, Ralph Wirth
  • Publication number: 20060180804
    Abstract: A semiconductor component having a thin-film semiconductor body (2) arranged on a germanium-containing carrier (4). A method for producing such a semiconductor component includes producing a semiconductor component having a thin-film conductor body arranged on a carrier, having the steps of growing the thin-film semiconductor body on a substrate, applying the carrier to a side of the thin-film semiconductor body that is remote from the substrate, and stripping the thin-film semiconductor body from the substrate, wherein the carrier contains germanium.
    Type: Application
    Filed: January 27, 2004
    Publication date: August 17, 2006
    Inventors: Peter Stauss, Andreas Ploessl
  • Publication number: 20060145164
    Abstract: An optoelectronic semiconductor chip has an active layer containing a photon-emitting zone. The active layer is attached to a carrier member at a bonding side of the active layer. The active layer has at least one recess therein with a cross-sectional area that decreases with increasing depth into said active layer proceeding from said bonding side.
    Type: Application
    Filed: November 30, 2005
    Publication date: July 6, 2006
    Inventors: Stefan Illek, Klaus Streubel, Walter Wegleiter, Andreas Ploessl, Ralph Wirth