Patents by Inventor Franz Eberhard

Franz Eberhard 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).

  • Patent number: 11990576
    Abstract: An optoelectronic semiconductor device may include a first semiconductor layer and a second semiconductor layer, the first and second semiconductor layers being stacked one above the other. The device may include a first contact structure and a contact layer. The device may include a separating layer arranged over a side of the contact layer, and a current spreading layer arranged over a side of the separating layer facing away from the contact layer. The first contact structure may be connected to the contact layer via the current spreading layer and the separating layer. A layer stack may include the contact layer, the separating layer, and the current spreading layer has an anisotropic conductivity. The separating layer is present as a continuous layer in a region between the contact layer and the current spreading layer.
    Type: Grant
    Filed: January 8, 2020
    Date of Patent: May 21, 2024
    Assignee: OSRAM Opto Semiconductors GmbH
    Inventor: Franz Eberhard
  • Publication number: 20230231080
    Abstract: In an embodiment a radiation-emitting semiconductor chip includes a semiconductor body having an active region configured to generate radiation, a first contact layer having a first contact area and a first contact finger structure connected to the first contact area, a second contact layer having a second contact area and a second contact finger structure connected to the second contact area, a current distribution layer electrically conductively connected to the first contact layer, a connection layer electrically conductively connected to the first contact layer via the current distribution layer and an insulation layer, wherein the insulation layer is arranged in places between the connection layer and the current distribution layer, wherein the insulation layer has at a plurality of openings, in which the connection layer and the current distribution layer adjoin one another, and wherein edge regions of the insulation layer includes more openings than a central region of the insulation layer.
    Type: Application
    Filed: March 17, 2023
    Publication date: July 20, 2023
    Inventors: Fabian Kopp, Attila Molnar, Bjoern Muermann, Franz Eberhard
  • Patent number: 11705370
    Abstract: A semiconductor component may include a first compressive strain layer on top of a semiconductor body. A material for the first compressive strain layer may include Ta, Mo, Nb, compounds thereof, and combinations thereof.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: July 18, 2023
    Assignee: OSRAM OLED GmbH
    Inventors: Benjamin Michaelis, Markus Broell, Robert Walter, Franz Eberhard, Michael Huber, Wolfgang Schmid
  • Patent number: 11631783
    Abstract: In an embodiment a radiation-emitting semiconductor chip includes a semiconductor body having an active region configured to generate radiation, a first contact layer having a first contact area for external electrical contacting the radiation-emitting semiconductor chip and a first contact finger structure connected to the first contact area, a second contact layer having a second contact area for external electrical contacting the radiation-emitting semiconductor chip and a second contact finger structure connected to the second contact area, wherein the first contact finger structure and the second contact finger structure overlap in places in plan view of the radiation-emitting semiconductor chip, a current distribution layer electrically conductively connected to the first contact layer, a connection layer electrically conductively connected to the first contact layer via the current distribution layer and an insulation layer containing a dielectric material, wherein the insulation layer is arranged in p
    Type: Grant
    Filed: September 21, 2021
    Date of Patent: April 18, 2023
    Assignee: OSRAM OLED GMBH
    Inventors: Fabian Kopp, Attila Molnar, Bjoern Muermann, Franz Eberhard
  • Patent number: 11367808
    Abstract: A radiation-emitting semiconductor chip includes a semiconductor body; a first contact layer having a first contact surface for external electrical contacting of the semiconductor chip and a first contact web structure connected to the first contact surface, wherein the first contact web structure is a region of the first contact layer that, compared to the first contact surface, has a comparatively small extent at least in a lateral direction; a second contact layer, wherein first and second contact web structures overlap in places in plan view of the semiconductor chip; a current distribution layer; and an insulation layer having a plurality of openings into which the current distribution layer extends.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: June 21, 2022
    Assignee: OSRAM OLED GmbH
    Inventors: Fabian Kopp, Franz Eberhard, Björn Muermann, Attila Molnar
  • Publication number: 20220123172
    Abstract: An optoelectronic semiconductor device may include a first semiconductor layer of a first conductivity type and a second semiconductor layer of a second conductivity type. The first and second semiconductor layers may be part of a semiconductor layer stack. The optoelectronic semiconductor device may include an electrically conductive layer arranged over a surface of the first semiconductor layer facing away from the second semiconductor layer. The electrically conductive layer may be directly adjacent to first regions of the first semiconductor layer. The electrically conductive layer may be removed from second regions of the first semiconductor layer, or a dielectric material may be arranged between second regions of the first semiconductor layer and the current spreading layer. The smallest horizontal dimension of the second regions may be less than 2 ?m.
    Type: Application
    Filed: February 11, 2020
    Publication date: April 21, 2022
    Inventor: Franz EBERHARD
  • Publication number: 20220085263
    Abstract: An optoelectronic semiconductor device may include a first semiconductor layer and a second semiconductor layer, the first and second semiconductor layers being stacked one above the other. The device may include a first contact structure and a contact layer. The device may include a separating layer arranged over a side of the contact layer, and a current spreading layer arranged over a side of the separating layer facing away from the contact layer. The first contact structure may be connected to the contact layer via the current spreading layer and the separating layer. A layer stack may include the contact layer, the separating layer, and the current spreading layer has an anisotropic conductivity. The separating layer is present as a continuous layer in a region between the contact layer and the current spreading layer.
    Type: Application
    Filed: January 8, 2020
    Publication date: March 17, 2022
    Inventor: Franz EBERHARD
  • Publication number: 20220077368
    Abstract: An optoelectronic semiconductor device may include a first and second semiconductor layer having a first and second conductivity type, respectively, a first contact structure, a contact layer, and a separating layer. Contact holes are arranged in the separating layer. The optoelectronic semiconductor device may include portions of a conductive layer arranged over a side of the separating layer facing away from the contact layer. The portions of the conductive layer are each connected to a conducting material in the contact holes. The first contact structure is connected to the contact layer via the portions of the conductive layer and the conducting material. A length of each of the portions is greater than a greatest width of the portions. The length denotes a shortest distance between an associated contact hole and a conductive material between adjacent portions, and the width is measured perpendicular to the length.
    Type: Application
    Filed: February 7, 2020
    Publication date: March 10, 2022
    Inventor: Franz EBERHARD
  • Publication number: 20220005974
    Abstract: In an embodiment a radiation-emitting semiconductor chip includes a semiconductor body having an active region configured to generate radiation, a first contact layer having a first contact area for external electrical contacting the radiation-emitting semiconductor chip and a first contact finger structure connected to the first contact area, a second contact layer having a second contact area for external electrical contacting the radiation-emitting semiconductor chip and a second contact finger structure connected to the second contact area, wherein the first contact finger structure and the second contact finger structure overlap in places in plan view of the radiation-emitting semiconductor chip, a current distribution layer electrically conductively connected to the first contact layer, a connection layer electrically conductively connected to the first contact layer via the current distribution layer and an insulation layer containing a dielectric material, wherein the insulation layer is arranged in p
    Type: Application
    Filed: September 21, 2021
    Publication date: January 6, 2022
    Inventors: Fabian Kopp, Attila Molnar, Bjoern Muermann, Franz Eberhard
  • Patent number: 11164994
    Abstract: A radiation-emitting semiconductor chip is disclosed. In an embodiment, a radiation-emitting semiconductor chip includes a semiconductor body configured to generate radiation, a first contact layer having a first contact area for external electrical contacting the semiconductor chip and a first contact finger structure connected to the first contact area, a second contact layer having a second contact area for external electrical contacting the semiconductor chip and a second contact finger structure connected to the second contact area, wherein the first contact finger structure and the second contact finger structure overlap in places, a current distribution layer electrically conductively connected to the first contact layer, a connection layer electrically conductively connected to the first contact layer via the current distribution layer and an insulation layer arranged in places between the connection layer and the current distribution layer, wherein the insulation layer has at least one opening.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: November 2, 2021
    Assignee: OSRAM OLED GMBH
    Inventors: Fabian Kopp, Attila Molnar, Bjoern Muermann, Franz Eberhard
  • Publication number: 20210328106
    Abstract: An optoelectronic semiconductor component comprises a first semiconductor layer of a first conductivity type having a first main surface and a second semiconductor layer of a second conductivity type arranged on a side facing away from the first main surface of the first semiconductor layer. The optoelectronic semiconductor component further comprises, on the side of the first main surface, a first current spreading structure electrically connected to the first semiconductor layer and a second current spreading structure electrically connected to the second semiconductor layer. The optoelectronic semiconductor component furthermore includes a dielectric mirror layer arranged on the side of the first main surface of the first semiconductor layer and on a side of the first or second current spreading structure facing away from the first semiconductor layer. At least one of the first and second current spreading structures contains silver.
    Type: Application
    Filed: July 11, 2019
    Publication date: October 21, 2021
    Inventors: Fabian Kopp, Attila Molnar, Franz Eberhard
  • Patent number: 11127880
    Abstract: An optoelectronic semiconductor device and a method for producing an optoelectronic semiconductor device are disclosed. In an embodiment an optoelectronic semiconductor device includes a semiconductor body having a first region of a first conductivity type, an active region configured to generate electromagnetic radiation and a second region of a second conductivity type in a stacking direction, an electrical contact metallization arranged on a side of the second region facing away from the active region and being opaque to the electromagnetic radiation, a radiation coupling-out region surrounding the electrical contact metallization at an edge side and an absorber layer structure arranged between the electrical contact metallization and the second region.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: September 21, 2021
    Assignee: OSRAM OLED GMBH
    Inventors: Johannes Unger, Franz Eberhard, Fabian Kopp, Katharina Christoph
  • Publication number: 20210265213
    Abstract: A semiconductor component may include a first compressive strain layer on top of a semiconductor body. A material for the first compressive strain layer may include Ta, Mo, Nb, compounds thereof, and combinations thereof.
    Type: Application
    Filed: June 27, 2019
    Publication date: August 26, 2021
    Inventors: Benjamin Michaelis, Markus Broell, Robert Walter, Franz Eberhard, Michael Huber, Wolfgang Schmid
  • Publication number: 20190355869
    Abstract: An optoelectronic semiconductor device and a method for producing an optoelectronic semiconductor device are disclosed. In an embodiment an optoelectronic semiconductor device includes a semiconductor body having a first region of a first conductivity type, an active region configured to generate electromagnetic radiation and a second region of a second conductivity type in a stacking direction, an electrical contact metallization arranged on a side of the second region facing away from the active region and being opaque to the electromagnetic radiation, a radiation coupling-out region surrounding the electrical contact metallization at an edge side and an absorber layer structure arranged between the electrical contact metallization and the second region.
    Type: Application
    Filed: May 10, 2019
    Publication date: November 21, 2019
    Inventors: Johannes Unger, Franz Eberhard, Fabian Kopp, Katharina Christoph
  • Patent number: 10475965
    Abstract: An optoelectronic semiconductor chip and a method for manufacturing an optoelectronic semiconductor chip are disclosed. In an embodiment the semiconductor chip includes a semiconductor body having a main surface and at least one side surface arranged transversely to the main surface, a contact layer arranged on the main surface of the semiconductor body and containing an electrically conductive material, a filter layer arranged on the contact layer and containing a dielectric material and a conductive layer arranged on the filter layer and containing an electrically conductive material, wherein a thickness of the conductive layer is greater than a thickness of the contact layer, wherein the contact layer and the conductive layer comprise a transparent electrically conductive oxide, and wherein the filter layer is multi-layered and comprises at least two sublayers which differ in their refractive index.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: November 12, 2019
    Assignee: OSRAM Opto Semiconductors GmbH
    Inventor: Franz Eberhard
  • Patent number: 10468555
    Abstract: A method for producing a semiconductor body is disclosed. In an embodiment, the method includes providing a semiconductor body, applying a first mask layer and a second mask layer to the semiconductor body and forming at least one second mask opening in the second mask layer and at least one recess in the semiconductor body in a region of the at least one first mask opening in the first mask layer, wherein the recess comprises a side face and a bottom face and the recess forms an undercut with the second mask opening. The method further includes applying a passivation layer unpatterned to the second mask layer and to the side face and the bottom face of the at least one recess and removing the passivation layer so that the passivation layer remains at least in part on the side face of the at least one recess.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: November 5, 2019
    Assignee: OSRAM OPTO SEMICONDUCTORS GMBH
    Inventor: Franz Eberhard
  • Publication number: 20190326471
    Abstract: A radiation-emitting semiconductor chip is disclosed. In an embodiment, a radiation-emitting semiconductor chip includes a semiconductor body configured to generate radiation, a first contact layer having a first contact area for external electrical contacting the semiconductor chip and a first contact finger structure connected to the first contact area, a second contact layer having a second contact area for external electrical contacting the semiconductor chip and a second contact finger structure connected to the second contact area, wherein the first contact finger structure and the second contact finger structure overlap in places, a current distribution layer electrically conductively connected to the first contact layer, a connection layer electrically conductively connected to the first contact layer via the current distribution layer and an insulation layer arranged in places between the connection layer and the current distribution layer, wherein the insulation layer has at least one opening.
    Type: Application
    Filed: June 26, 2017
    Publication date: October 24, 2019
    Inventors: Fabian Kopp, Attila Molnar, Bjoern Muermann, Franz Eberhard
  • Patent number: 10424509
    Abstract: A method for producing a semiconductor body is disclosed. In an embodiment the method includes providing a semiconductor body, applying a first mask layer and a second mask layer to the semiconductor body and forming at least one second mask opening in the second mask layer and at least one recess in the semiconductor body in a region of the at least one first mask opening in the first mask layer, wherein the recess comprises a side face and a bottom face and the recess forms an undercut with the second mask opening, when viewed from the first mask opening. The method further includes applying a contact layer to the first mask layer and the bottom face of the at least one recess using a directional deposition method and applying a passivation layer to the side face of the at least one recess.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: September 24, 2019
    Assignee: OSRAM Opto Semiconductors GmbH
    Inventor: Franz Eberhard
  • Publication number: 20190181299
    Abstract: A radiation-emitting semiconductor chip includes a semiconductor body having an active region that generates radiation; a first contact layer having a first contact surface and a first contact web structure connected to the first contact surface; a second contact layer having a second contact surface and a second contact web structure connected to the second contact surface, wherein the first contact web structure and the second contact web structure overlap in places in plan view of the semiconductor chip; a current distribution layer through which the first semiconductor layer electrically conductively connects to the first contact layer; and an insulation layer containing a dielectric material, wherein the insulation layer is arranged between the first semiconductor layer and the current distribution layer and has a plurality of openings into which the current distribution layer extends, and a diameter of the openings is 1 ?m to 20 ?m.
    Type: Application
    Filed: December 11, 2018
    Publication date: June 13, 2019
    Inventors: Fabian Kopp, Franz Eberhard, Björn Muermann, Attila Molnar
  • Publication number: 20190027653
    Abstract: An optoelectronic semiconductor chip and a method for manufacturing an optoelectronic semiconductor chip are disclosed. In an embodiment the semiconductor chip includes a semiconductor body having a main surface and at least one side surface arranged transversely to the main surface, a contact layer arranged on the main surface of the semiconductor body and containing an electrically conductive material, a filter layer arranged on the contact layer and containing a dielectric material and a conductive layer arranged on the filter layer and containing an electrically conductive material, wherein a thickness of the conductive layer is greater than a thickness of the contact layer, wherein the contact layer and the conductive layer comprise a transparent electrically conductive oxide, and wherein the filter layer is multi-layered and comprises at least two sublayers which differ in their refractive index.
    Type: Application
    Filed: January 23, 2017
    Publication date: January 24, 2019
    Inventor: Franz Eberhard