Patents by Inventor Anna Nirschl
Anna Nirschl 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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Patent number: 12159956Abstract: Provided is an optoelectronic semiconductor chip including a semiconductor layer sequence having an active layer, a doped current spreading layer and an output coupling layer, which are arranged one above the other in this order. The active layer generates primary radiation during intended operation. The current spreading layer includes a larger lateral electrical conductivity than the output coupling layer. The output coupling layer includes output coupling structures for coupling out radiation on an exit side facing away from the active layer. The output coupling layer includes a lower absorption coefficient for primary radiation than the current spreading layer.Type: GrantFiled: August 13, 2019Date of Patent: December 3, 2024Assignee: OSRAM OLED GMBHInventors: Sebastian Pickel, Katharina Werner, Bernd Böhm, Anna Strozecka-Assig, Anna Nirschl
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Patent number: 12155023Abstract: The invention relates to an optoelectronic semiconductor chip comprising a semiconductor layer sequence with a first semiconductor layer, a second semiconductor layer and an active layer between the first and the second semiconductor layers. The optoelectronic semiconductor chip further comprises a first contact structure with a plurality of first contact pins and a first contact layer for electrically contacting the first semiconductor layer and a second contact structure for electrically contacting the second semiconductor layer. The first semiconductor layer is disposed between the first contact layer and the active layer. The first contact pins are disposed between the first contact layer and the first semiconductor layer and are separated and spaced at a distance from one another in the lateral direction. An electrical connection with an electrical resistance between the first contact layer and the first semiconductor layer is formed by each first contact pin.Type: GrantFiled: May 14, 2020Date of Patent: November 26, 2024Assignee: OSRAM OPTO SEMICONDUCTORS GMBHInventors: Stefan Barthel, Anna Nirschl
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Patent number: 11646394Abstract: A radiation-emitting semiconductor body having a semiconductor layer sequence includes an active region that generates radiation, an n-conducting region and a p-conducting region, wherein the active region is located between the n-conducting region and the p-conducting region, the p-conducting region includes a current expansion layer based on a phosphide compound semiconductor material, and the current expansion layer is doped with a first dopant incorporated at phosphorus lattice sites.Type: GrantFiled: March 5, 2018Date of Patent: May 9, 2023Assignee: OSRAM OLED GmbHInventors: Xue Wang, Markus Bröll, Anna Nirschl
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Publication number: 20220320398Abstract: The invention relates to an optoelectronic semiconductor chip comprising a semiconductor layer sequence with a first semiconductor layer, a second semiconductor layer and an active layer between the first and the second semiconductor layers. The optoelectronic semiconductor chip further comprises a first contact structure with a plurality of first contact pins and a first contact layer for electrically contacting the first semiconductor layer and a second contact structure for electrically contacting the second semiconductor layer. The first semiconductor layer is disposed between the first contact layer and the active layer. The first contact pins are disposed between the first contact layer and the first semiconductor layer and are separated and spaced at a distance from one another in the lateral direction. An electrical connection with an electrical resistance between the first contact layer and the first semiconductor layer is formed by each first contact pin.Type: ApplicationFiled: May 14, 2020Publication date: October 6, 2022Inventors: Stefan Barthel, Anna Nirschl
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Publication number: 20210320223Abstract: In at least one embodiment, the optoelectronic semiconductor chip (100) comprises a semiconductor layer sequence (1) having an active layer (10), a doped current spreading layer (11) and an output coupling layer (12), which are arranged one above the other in this order. The active layer generates primary radiation during intended operation. The current spreading layer comprises a larger lateral electrical conductivity than the output coupling layer. The output coupling layer comprises output coupling structures (121) for coupling out radiation on an exit side (120) facing away from the active layer. The output coupling layer comprises a lower absorption coefficient for primary radiation than the current spreading layer.Type: ApplicationFiled: August 13, 2019Publication date: October 14, 2021Inventors: Sebastian Pickel, Katharina Werner, Bernd Böhm, Anna Strozecka-Assig, Anna Nirschl
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Patent number: 10522699Abstract: An optoelectronic semiconductor chip is disclosed. In an embodiment a chip includes an active zone with a multi-quantum-well structure, wherein the multi-quantum-well structure includes multiple quantum-well layers and multiple barrier layers, which are arranged sequentially in an alternating manner along a growth direction and which each extend continuously over the entire multi-quantum-well structure, wherein seen in a cross-section parallel to the growth direction, the multi-quantum-well structure has at least one emission region and multiple transport regions, wherein the quantum-well layers and the barrier layers are thinner in the transport regions than in the emission region, wherein, along the growth direction, the transport regions have a constant width, and wherein the quantum-well layers and the barrier layers are oriented parallel to one another in the emission region and in the transport regions.Type: GrantFiled: November 20, 2018Date of Patent: December 31, 2019Assignee: OSRAM OPTO SEMICONDUCTORS GMBHInventors: Asako Hirai, Tobias Meyer, Philipp Drechsel, Peter Strauß, Anna Nirschl, Alvaro Gomez-Iglesias, Tobias Niebling, Bastian Galler
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Publication number: 20190109246Abstract: An optoelectronic semiconductor chip is disclosed. In an embodiment a chip includes an active zone with a multi-quantum-well structure, wherein the multi-quantum-well structure includes multiple quantum-well layers and multiple barrier layers, which are arranged sequentially in an alternating manner along a growth direction and which each extend continuously over the entire multi-quantum-well structure, wherein seen in a cross-section parallel to the growth direction, the multi-quantum-well structure has at least one emission region and multiple transport regions, wherein the quantum-well layers and the barrier layers are thinner in the transport regions than in the emission region, wherein, along the growth direction, the transport regions have a constant width, and wherein the quantum-well layers and the barrier layers are oriented parallel to one another in the emission region and in the transport regions.Type: ApplicationFiled: November 20, 2018Publication date: April 11, 2019Inventors: Asako Hirai, Tobias Meyer, Philipp Drechsel, Peter Stauß, Anna Nirschl, Alvaro Gomez-Iglesias, Tobias Niebling, Bastian Galler
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Patent number: 10164134Abstract: An optoelectronic semiconductor chip is disclosed. In an embodiment the chip includes an active zone with a multi-quantum-well structure, wherein the multi-quantum-well structure comprises multiple quantum-well layers and multiple barrier layers, which are arranged sequentially in an alternating manner along a growth direction, wherein the multi-quantum-well structure has at least one emission region and multiple transport regions which are arranged sequentially in an alternating manner in a direction perpendicular to the growth direction, wherein at least one of the quantum-well layers and the barrier layers are thinner in the transport regions than in the emission regions, and wherein the quantum-well layers in the transport regions and in the emission regions are oriented perpendicularly to the growth direction with exception of a junction region between adjacent transport regions and emission regions.Type: GrantFiled: March 29, 2016Date of Patent: December 25, 2018Assignee: OSRAM Opto Semiconductors GmbHInventors: Asako Hirai, Tobias Meyer, Philipp Drechsel, Peter Stauß, Anna Nirschl, Alvaro Gomez-Iglesias, Tobias Niebling, Bastian Galler
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Publication number: 20180062031Abstract: An optoelectronic semiconductor chip is disclosed. In an embodiment the chip includes an active zone with a multi-quantum-well structure, wherein the multi-quantum-well structure comprises multiple quantum-well layers and multiple barrier layers, which are arranged sequentially in an alternating manner along a growth direction, wherein the multi-quantum-well structure has at least one emission region and multiple transport regions which are arranged sequentially in an alternating manner in a direction perpendicular to the growth direction, wherein at least one of the quantum-well layers and the barrier layers are thinner in the transport regions than in the emission regions, and wherein the quantum-well layers in the transport regions and in the emission regions are oriented perpendicularly to the growth direction with exception of a junction region between adjacent transport regions and emission regions.Type: ApplicationFiled: March 29, 2016Publication date: March 1, 2018Inventors: Asako Hirai, Tobias Meyer, Philipp Drechsel, Peter Stauß, Anna Nirschl, Alvaro Gomez-Iglesias, Tobias Niebling, Bastian Galler