Patents by Inventor Christoph Eichler
Christoph Eichler 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).
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Publication number: 20170330757Abstract: A method for producing a semiconductor chip (100) is provided, in which, during a growth process for growing a first semiconductor layer (1), an inhomogeneous lateral temperature distribution is created along at least one direction of extent of the growing first semiconductor layer (1), such that a lateral variation of a material composition of the first semiconductor layer (1) is produced. A semiconductor chip (100) is additionally provided.Type: ApplicationFiled: May 12, 2017Publication date: November 16, 2017Inventors: Christoph EICHLER, Andre SOMERS, Harald KOENIG, Bernhard STOJETZ, Andreas LOEFFLER, Alfred LELL
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Publication number: 20170331257Abstract: A light-emitting semiconductor chip (100) is provided, having a first semiconductor layer (1), which is at least part of an active layer provided for generating light and which has a lateral variation of a material composition along at least one direction of extent. Additionally provided is a method for producing a semiconductor chip (100).Type: ApplicationFiled: May 12, 2017Publication date: November 16, 2017Inventors: Christoph EICHLER, Andre SOMERS, Bernhard STOJETZ, Andreas LOEFFLER, Alfred LELL
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Patent number: 9818910Abstract: An optoelectronic component and a method for the producing an optoelectronic component are disclosed.Type: GrantFiled: August 4, 2015Date of Patent: November 14, 2017Assignee: OSRAM Opto Semiconductors GmbHInventors: Christoph Eichler, Adrian Stefan Avramescu, Teresa Wurm, Jelena Ristic
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Publication number: 20170264073Abstract: A method of producing a laser chip includes providing a semiconductor wafer; creating a plurality of depressions arranged one behind another along a breaking direction on a top side of the semiconductor wafer, wherein 1) each depression includes a front boundary face and a rear boundary face successively in the breaking direction, 2) in at least one depression, the rear boundary face is inclined by an angle of 95° to 170° relative to the top side of the semiconductor wafer, 3) at least one depression includes a shoulder adjacent to the rear boundary face, and 4) the shoulder includes a shoulder face parallel to the top side of the semiconductor wafer and adjacent to the rear boundary face; and breaking the semiconductor wafer in the breaking direction at a breaking plane oriented perpendicularly to the top side of the semiconductor wafer and which runs through the depressions.Type: ApplicationFiled: August 27, 2015Publication date: September 14, 2017Inventors: Sven Gerhard, Alfred Lell, Joachim Pfeiffer, Jens Mueller, Christoph Eichler, Thomas Veit, Thomas Adlhoch
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Publication number: 20170222087Abstract: An optoelectronic component and a method for the producing an optoelectronic component are disclosed.Type: ApplicationFiled: August 4, 2015Publication date: August 3, 2017Inventors: Christoph Eichler, Adrian Stefan Avramescu, Teresa Wurm, Jelena Ristic
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Patent number: 9673590Abstract: A semiconductor stripe laser has a first semiconductor region having a first conductivity type and a second semiconductor region having a different, second conductivity type. An active zone for generating laser radiation is located between the semiconductor regions. A stripe waveguide is formed in the second semiconductor region and is arranged to guide waves in a one-dimensional manner and is arranged for a current density of at least 0.5 kA/cm2. A second electrical contact is located on the second semiconductor region and on an electrical contact structure for external electrical contacting. An electrical passivation layer is provided in certain places on the stripe waveguide. A thermal insulation apparatus is located between the second electrical contact and the active zone and/or on the stripe waveguide.Type: GrantFiled: May 5, 2015Date of Patent: June 6, 2017Assignee: OSRAM Opto Semiconductors GmbHInventors: Adrian Stefan Avramescu, Clemens Vierheilig, Christoph Eichler, Alfred Lell, Jens Mueller
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Patent number: 9559496Abstract: A laser light source, comprising a semiconductor layer sequence having an active region and a radiation coupling out area having first and second partial regions, and a filter structure. The active region generates coherent first electromagnetic radiation and incoherent second electromagnetic radiation. The coherent first electromagnetic radiation is emitted by the first partial region along an emission direction, and the incoherent second electromagnetic radiation is emitted by the first partial region and by the second partial region. The filter structure at least partly attenuates the incoherent second electromagnetic radiation emitted by the active region along the emission direction. The filter structure comprises at least one first filter element disposed downstream of the semiconductor layer sequence in the emission direction and it has at least one layer comprising a material that is non-transparent to electromagnetic radiation.Type: GrantFiled: November 24, 2015Date of Patent: January 31, 2017Assignee: OSRAM Opto Semiconductors GmbHInventors: Alfred Lell, Christoph Eichler, Wolfgang Schmid, Soenke Tautz, Wolfgang Reill, Dimitri Dini
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Patent number: 9559497Abstract: A laser light source, comprising a semiconductor layer sequence having an active region and a radiation coupling out area having first and second partial regions, and a filter structure. The active region generates coherent first electromagnetic radiation and incoherent second electromagnetic radiation. The coherent first electromagnetic radiation is emitted by the first partial region along an emission direction, and the incoherent second electromagnetic radiation is emitted by the first partial region and by the second partial region. The filter structure at least partly attenuates the incoherent second electromagnetic radiation emitted along the emission direction. The filter structure has at least one filter element arranged on an area of the semiconductor layer sequence which has an extension direction parallel to the emission direction. The at least one filter element comprises a surface structure comprising a roughening and/or at least one layer comprising a non-transparent material.Type: GrantFiled: November 24, 2015Date of Patent: January 31, 2017Assignee: OSRAM Opto Semiconductors GmbHInventors: Alfred Lell, Christoph Eichler, Wolfgang Schmid, Soenke Tautz, Wolfgang Reill, Dimitri Dini
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Patent number: 9543218Abstract: A method can be used to produce a semiconductor component. A semiconductor layer sequence has an active region that is provided for generating radiation and also has an indicator layer. Material of the semiconductor layer sequence that is arranged on that side of the indicator layer that is remote from the active region is removed in regions. The material is removed using a dry-chemical removal of the semiconductor layer sequence. A property of a process gas is monitored during the removal to determine that the indicator layer has been reached based on a change in the property of the process gas.Type: GrantFiled: October 22, 2013Date of Patent: January 10, 2017Assignee: OSRAM OPTO SEMICONDUCTORS GMBHInventors: Christoph Eichler, Uwe Strauss
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Patent number: 9531163Abstract: A semiconductor laser diode includes a substrate. A semiconductor layer sequence on the substrate has at least one active layer designed for generating laser light that is emitted along an emission direction during operation. At least one filter layer has a main extension plane that is parallel to a main extension plane of the active layer and that is designed to scatter and/or absorb light that propagates in the semiconductor layer sequence and/or the substrate in addition to the laser light.Type: GrantFiled: April 27, 2015Date of Patent: December 27, 2016Assignee: OSRAM Opto Semiconductors GmbHInventors: Bernhard Stojetz, Alfred Lell, Christoph Eichler
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Patent number: 9531158Abstract: A laser light source, comprising a semiconductor layer sequence on a substrate and having an active region and a radiation coupling out area having first and second partial regions and a filter structure. The active region generates coherent first electromagnetic radiation and incoherent second electromagnetic radiation, the coherent first electromagnetic radiation is emitted by the first partial region along an emission direction, the incoherent second electromagnetic radiation is emitted by the first partial region and by the second partial region. The filter structure at least partly attenuates the incoherent second electromagnetic radiation emitted by the active region along the emission direction. The filter structure has at least one filter element arranged on an area of the semiconductor layer sequence which has an extension direction parallel to the emission direction and which is remote from the substrate.Type: GrantFiled: November 24, 2015Date of Patent: December 27, 2016Assignee: OSRAM Opto Semiconductors GmbHInventors: Alfred Lell, Christoph Eichler, Wolfgang Schmid, Soenke Tautz, Wolfgang Reill, Dimitri Dini
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Publication number: 20160268775Abstract: A semiconductor laser includes a main body and a ridge structure arranged on the main body, the ridge structure being oriented along a longitudinal axis above an active zone, wherein the ridge structure has a first width, the ridge structure has two opposite end faces along the longitudinal axis, adjacent to at least one end face, the ridge structure has an end section arranged on one side with respect to a center axis of the ridge structure such that the ridge structure is widened on one side adjacent to the end face, and on an opposite side of the ridge structure relative to the end section a fracture trench is arranged adjacent to the end face and at a distance from the ridge structure in a surface of the main body.Type: ApplicationFiled: October 14, 2014Publication date: September 15, 2016Inventors: Christoph Eichler, Jens Müller, Fabian Kopp
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Patent number: 9407063Abstract: A laser light source comprises, in particular, a semiconductor layer sequence (10) having an active region (45) and a radiation coupling-out area (12) having a first partial region (121) and a second partial region (122) different than the latter, and a filter structure (5), wherein the active region (45) generates, during operation, coherent first electromagnetic radiation (51) having a first wavelength range and incoherent second electromagnetic radiation (52) having a second wavelength range, the coherent first electromagnetic radiation (51) is emitted by the first partial region (121) along an emission direction (90), the incoherent second electromagnetic radiation (52) is emitted by the first partial region (121) and by the second partial region (122), the second wavelength range comprises the first wavelength range, and the filter structure (5) at least partly attenuates the incoherent second electromagnetic radiation (52) emitted by the active region along the emission direction (90).Type: GrantFiled: February 20, 2015Date of Patent: August 2, 2016Assignee: OSRAM Opto Semiconductors GmbHInventors: Alfred Lell, Christoph Eichler, Wolfgang Schmid, Soenke Tautz, Wolfgang Reill, Dimitri Dini
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Publication number: 20160211646Abstract: A semiconductor stripe laser has a first semiconductor region having a first conductivity type and a second semiconductor region having a different, second conductivity type. An active zone for generating laser radiation is located between the semiconductor regions. A stripe waveguide is formed in the second semiconductor region and is arranged to guide waves in a one-dimensional manner and is arranged for a current density of at least 0.5 kA/cm2. A second electrical contact is located on the second semiconductor region and on an electrical contact structure for external electrical contacting. An electrical passivation layer is provided in certain places on the stripe waveguide. A thermal insulation apparatus is located between the second electrical contact and the active zone and/or on the stripe waveguide.Type: ApplicationFiled: May 5, 2015Publication date: July 21, 2016Inventors: Adrian Stefan Avramescu, Clemens Vierheilig, Christoph Eichler, Alfred Lell, Jens Mueller
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Patent number: 9397262Abstract: An optoelectronic semiconductor chip (1) is herein described which comprises a non-planar growth layer (2), which contains at least one first nitride compound semiconductor material, and an active zone (5), which contains at least one second nitride compound semiconductor material and is arranged on the growth layer (2), and a top layer (7), which is arranged on the active zone (5), the growth layer (2) comprising structure elements (4) at a growth surface (3) facing the active zone (5).Type: GrantFiled: July 21, 2009Date of Patent: July 19, 2016Assignee: OSRAM Opto Semiconductors GmbHInventors: Stephan Lutgen, Christoph Eichler, Marc Schillgalies, Desiree Queren
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Patent number: 9385507Abstract: A semiconductor laser light source comprising an edge-emitting semiconductor body (10) is provided. The semiconductor body (10) contains a semiconductor layer stack (110) having an n-type layer (111), an active layer (112) and a p-type layer (113) which is formed for generating electromagnetic radiation which comprises a coherent portion (21). The semiconductor laser light source is formed for decoupling the coherent portion (21) of the electromagnetic radiation from a decoupling surface (101) of the semiconductor body (10) which is inclined with respect to the active layer (112). The semiconductor body (10) comprises a further external surface (102A, 102B, 102C) which is inclined with respect to the decoupling surface (101) and has at least one light-diffusing sub-region (12, 12A, 12B, 12C, 120A, 120B) which is provided in order to direct a portion of the electromagnetic radiation generated by the semiconductor layer stack (110) in the direction towards the further external surface (102A, 102B, 102C).Type: GrantFiled: December 14, 2015Date of Patent: July 5, 2016Assignee: OSRAM OPTO SEMICONDUCTORS GMBHInventors: Christoph Eichler, Andreas Breidenassel, Alfred Lell
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Patent number: 9373937Abstract: A semiconductor laser includes a layer structure with superimposed layers with at least the following layer structure: an n-doped outer layer, a third wave-guiding layer, an active zone in which light-generating structures are arranged, a second wave-guiding layer, a blocking layer, a first wave-guiding layer, a p-doped outer layer. The first, second and third wave-guiding layers have at least AlxInyGa (1?x?y) N. The blocking layer has an Al content which is at least 2% greater than the Al content of the adjacent first wave-guiding layer. The Al content of the blocking layer increases from the first wave-guiding layer towards the second wave-guiding layer. The layer structure has a double-sided gradation. The double-side gradation is arranged at the height of the blocking layer such that at least one part of the blocking layer or the entire blocking layer is of greater width than the first wave-guiding layer.Type: GrantFiled: September 3, 2013Date of Patent: June 21, 2016Assignee: OSRAM Opto Semiconductors GmbHInventors: Uwe Strauβ, Teresa Wurm, Adrian Stefan Avramescu, Georg Brüderl, Christoph Eichler, Sven Gerhard
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Publication number: 20160099547Abstract: A semiconductor laser light source comprising an edge-emitting semiconductor body (10) is provided. The semiconductor body (10) contains a semiconductor layer stack (110) having an n-type layer (111), an active layer (112) and a p-type layer (113) which is formed for generating electromagnetic radiation which comprises a coherent portion (21). The semiconductor laser light source is formed for decoupling the coherent portion (21) of the electromagnetic radiation from a decoupling surface (101) of the semiconductor body (10) which is inclined with respect to the active layer (112). The semiconductor body (10) comprises a further external surface (102A, 102B, 102C) which is inclined with respect to the decoupling surface (101) and has at least one light-diffusing sub-region (12, 12A, 12B, 12C, 120A, 120B) which is provided in order to direct a portion of the electromagnetic radiation generated by the semiconductor layer stack (110) in the direction towards the further external surface (102A, 102B, 102C).Type: ApplicationFiled: December 14, 2015Publication date: April 7, 2016Inventors: Christoph EICHLER, Andreas BREIDENASSEL, Alfred LELL
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Publication number: 20160087404Abstract: A laser light source, comprising a semiconductor layer sequence on a substrate and having an active region and a radiation coupling out area having first and second partial regions and a filter structure. The active region generates coherent first electromagnetic radiation and incoherent second electromagnetic radiation, the coherent first electromagnetic radiation is emitted by the first partial region along an emission direction, the incoherent second electromagnetic radiation is emitted by the first partial region and by the second partial region. The filter structure at least partly attenuates the incoherent second electromagnetic radiation emitted by the active region along the emission direction. The filter structure has at least one filter element arranged on an area of the semiconductor layer sequence which has an extension direction parallel to the emission direction and which is remote from the substrate.Type: ApplicationFiled: November 24, 2015Publication date: March 24, 2016Inventors: Alfred LELL, Christoph EICHLER, Wolfgang SCHMID, Soenke TAUTZ, Wolfgang REILL, Dimitri DINI
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Publication number: 20160079734Abstract: A laser light source, comprising a semiconductor layer sequence having an active region and a radiation coupling out area having first and second partial regions, and a filter structure. The active region generates coherent first electromagnetic radiation and incoherent second electromagnetic radiation. The coherent first electromagnetic radiation is emitted by the first partial region along an emission direction, and the incoherent second electromagnetic radiation is emitted by the first partial region and by the second partial region. The filter structure at least partly attenuates the incoherent second electromagnetic radiation emitted along the emission direction. The filter structure has at least one filter element arranged on an area of the semiconductor layer sequence which has an extension direction parallel to the emission direction. The at least one filter element comprises a surface structure comprising a roughening and/or at least one layer comprising a non-transparent material.Type: ApplicationFiled: November 24, 2015Publication date: March 17, 2016Inventors: Alfred LELL, Christoph EICHLER, Wolfgang SCHMID, Soenke TAUTZ, Wolfgang REILL, Dimitri DINI