Patents by Inventor Jan Blochwitz
Jan Blochwitz 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: 20080203406Abstract: The invention relates to a layer assembly for a light-emitting component, in particular a phosphorescent organic light-emitting diode, having a hole-injecting contact and an electron-injecting contact which are each connected to a light-emitting region, wherein, in the light-emitting region, one light-emitting layer is made up of a material (M1) and another light-emitting layer is made up of another material (M2), where the material (M1) is ambipolar and preferentially transports holes and the other material (M2) is ambipolar and preferentially transports electrons; a heterotransition is formed by the material (M1) and the other material (M2) in the light-emitting region; an interface between the material (M1) and the other material (M2) is of the staggered type II; the material (M1) and the other material (M2) each contain an appropriate addition of one or more triplet emitter dopants; and an energy barrier for transfer of holes from the material (M1) into the other material (M2) and an energy barrer for traType: ApplicationFiled: June 16, 2005Publication date: August 28, 2008Applicants: NOVALDE GMBH, TECHNISCHE UNIVERSITÄT DRESDENInventors: Gufeng He, Martin Pfeiffer, Jan Blochwitz-Nimoth
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Publication number: 20080160669Abstract: A light-emitting component comprising organic layers and having several layers between a base contact and a cover contact, the corresponding process for its preparation. At least one polymer layer and two molecular layers are arranged, so that when the cover contact is a cathode, the layer adjacent to the cover contact is designed as an electron-transporting molecular layer and is doped with an organic or inorganic donor, the electron-transporting layer comprising a principal organic substance and a donor-type doping substance, the molecular weight of the dopant being more than 200 g/mole. When the cover contact is an anode, the layer adjacent to the cover contact is designed as a p-doped hole-transporting molecular layer and is doped with an organic or inorganic acceptor, the hole-transporting layer comprising a principal organic substance and an acceptor-like doping substance, the molecular weight of the dopant being more than 200 g/mole.Type: ApplicationFiled: February 8, 2008Publication date: July 3, 2008Inventors: Jan Blochwitz-Nimoth, Gildas Sorin
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Publication number: 20080143250Abstract: The invention relates to an organic lighting component, in particular an organic light-emitting diode, comprising a lighting element (1; 2) and a luminous surface (1f, 2f) encompassed by the lighting element (1; 2), the luminous surface being formed by an electrode (1a; 2a), a counterelectrode (1d; 2d), and an organic layer system (1e; 2e) which is situated between the electrode (1a; 2a) and the counterelectrode (1d; 2d) and is in electrical contact with the electrode (1a; 2a) and the counterelectrode (1d; 2d), wherein sections of the organic layer system (1e; 2e) which are located in the region of the luminous surface (1f; 2f) and which emit light upon application of an electrical voltage to the electrode (1a; 2a) and the counterelectrode (1d; 2d) have a uniform organic material structure and are provided on multiple partial electrodes (1b; 2b) of the electrode (1a; 2a) electrically connected in parallel, on one side the multiple partial electrodes being electrically connected to one another at their ends, aType: ApplicationFiled: December 12, 2007Publication date: June 19, 2008Applicant: NOVALED AGInventors: Jan Blochwitz-Nimoth, Sven Murano, Jan Birnstock
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Patent number: 7355197Abstract: A light-emitting component comprising organic layers and having several layers between a base contact and a cover contact, the corresponding process for its preparation. At least one polymer layer and two molecular layers are arranged, so that when the cover contact is a cathode, the layer adjacent to the cover contact is designed as an electron-transporting molecular layer and is doped with an organic or inorganic donor, the electron-transporting layer comprising a principal organic substance and a donor-type doping substance, the molecular weight of the dopant being more than 200 g/mole. When the cover contact is an anode, the layer adjacent to the cover contact is designed as a p-doped hole-transporting molecular layer and is doped with an organic or inorganic acceptor, the hole-transporting layer comprising a principal organic substance and an acceptor-like doping substance, the molecular weight of the dopant being more than 200 g/mole.Type: GrantFiled: August 27, 2004Date of Patent: April 8, 2008Assignee: NovaLED GmbHInventors: Jan Blochwitz-Nimoth, Gildas Sorin
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Patent number: 7345300Abstract: The invention relates to a light emitting component with organic layers and emission of triplet exciton states (phosphorescent light) with increased efficiency, having a layer sequence with a hole injecting contact (anode), one or more hole injecting and transporting layers, a system of layers in the light emission zone, one or more electron transport and injection layers and an electron injecting contact (cathode), characterized in that the light emitting zone comprises a series of heterojunctions with the materials A and B (ABAB . . . ) that form interfaces of the type “staggered type II”, one material (A), having hole transporting or bipolar transport properties and the other material (B) having electron transporting or bi-polar transport properties, and at least one of the two materials A or B being mixed with a triplet emitter dopant that is able to efficiently convert its triplet exciton energy into light.Type: GrantFiled: May 22, 2003Date of Patent: March 18, 2008Inventors: Dashan Qin, Jan Blochwitz-Nimoth, Xiang Zhou, Martin Pfeiffer
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Patent number: 7274141Abstract: A light emitting component with organic layers, e.g., an organic light-emitting diode, which includes a substrate, at least one light emitting layer, and at least one charge carrier transport layer, having a cathode on the substrate and light emission through the anode. The light emitting component may further include a transport layer that is p-doped with an organic material.Type: GrantFiled: July 5, 2002Date of Patent: September 25, 2007Assignee: NovaLED GmbHInventors: Karl Leo, Jan Blochwitz-Nimoth, Martin Pfeiffer
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Publication number: 20060250076Abstract: The invention relates to an arrangement for an organic pin-type light-emitting diode with an electrode and a counter-electrode and a stack with organic layers between the electrode and the counter-electrode, where the stack with the organic layers comprises an emission layer comprising a k (k=1, 2, 3, . . . ) organic matrix materials, a doped charge carrier transport layer, which is arranged between the electrode and the emission layer, a further doped charge carrier transport layer, which is arranged between the counter-electrode and the emission layer, and one block layer, which is arranged between one of the doped charge carrier transport layers and the emission layer. The organic layers of the stack are formed by means of n (n?k+2) organic matrix materials, where the n organic matrix materials comprise the k organic matrix materials of the emission layer.Type: ApplicationFiled: April 12, 2006Publication date: November 9, 2006Inventors: Michael Hofmann, Jan Birnstock, Jan Blochwitz-Nimoth, Ansgar Werner, Martin Pfeiffer, Kentaro Harada
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Publication number: 20060231843Abstract: The invention relates to a light emitting component with organic layers and emission of triplet exciton states (phosphorescent light) with increased efficiency, having a layer sequence with a hole injecting contact (anode), one or more hole injecting and transporting layers, a system of layers in the light emission zone, one or more electron transport and injection layers and an electron injecting contact (cathode), characterized in that the light emitting zone comprises a series of heterojunctions with the materials A and B (ABAB . . . ) that form interfaces of the type “staggered type II”, one material (A), having hole transporting or bipolar transport properties and the other material (B) having electron transporting or bi-polar transport properties, and at least one of the two materials A or B being mixed with a triplet emitter dopant that is able to efficiently convert its triplet exciton energy into light.Type: ApplicationFiled: May 22, 2003Publication date: October 19, 2006Inventors: Dashan Qin, Jan Blochwitz-Nimoth, Xiang Zhou, Martin Pfeiffer
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Patent number: 7074500Abstract: The invention relates to a light-emmiting component having organic layers, in particular to an organic light-emmiting diode. The component has at least one doped charge carrier transport layer (2), a light-emmiting layer (4) and contact layers (1, 5) and also has a blocking layer (3; 3?) wherein an organic material is provided between the charge carrier transport layer (2, 2?) and the light-emmiting layer (4). The energy levels of the charge carried transport layer are chosen in such a way that efficient doping is possible and the blocking layer nevertheless ensures that non-radiating recombination processes on the interface with the emitting layer are prevented.Type: GrantFiled: November 20, 2001Date of Patent: July 11, 2006Assignee: NovaLED GmbHInventors: Martin Pfeiffer, Karl Leo, Jan Blochwitz-Niemoth, Xiang Zhou
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Method for changing a conversion property of a spectrum conversion layer for a light emitting device
Publication number: 20060061260Abstract: It is the knowledge of the present invention that the spectrum of any light emitting device can be converted into a desired spectrum in a simple way, by providing a light emitting device with a light conversion layer, which has a dye with a conversion property, to convert the light emitted by the light emitting device into light of a different spectrum, and thereupon acting upon the spectrum conversion layer such that the dye is at least partly removed or a conversion property is destroyed. In this way, it is also possible in a simple way to structure a display of a plurality of light emitting devices to a color display, by providing a spectrum conversion layer for all light emitting devices, i.e.Type: ApplicationFiled: September 8, 2005Publication date: March 23, 2006Inventors: Karl Leo, Jan Blochwitz-Nimotz, Joerg Amelung, Hartmut Froeb, Martin Pfeiffer -
Publication number: 20060049397Abstract: The present invention relates to use of an organic matrix material for producing an organic semiconductor material, characterized in that the organic matrix material is comprised at least partly of a spirobifluorene compound, and the glass transition temperature of the organic matrix material is at least 120° C. and the highest occupied molecular orbital (HOMO) of the matrix material is at a maximum energy level of 5.4 eV; and also to an organic semiconductor material and electronic component.Type: ApplicationFiled: August 3, 2005Publication date: March 9, 2006Inventors: Martin Pfeiffer, Jan Blochwitz-Nimoth, Andrea Lux, Josef Salbeck
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Publication number: 20060033115Abstract: The invention relates to a thermally stable, high efficient, transparent light-emitting component, which comprises organic layers, is run at low operating voltages and is simple to produce. The aim of the invention is to disclose a completely transparent (>70% transmission) organic light-emitting diode, which can be operated at a reduced operating voltage and is highly efficient at emitting light. To achieve this, according to the invention the hole transport layer adjacent to the anode is p-doped with a stable, acceptor-type organic molecular material with a high molecular mass, which leads to an increased hole conductivity in the doped layer, in comparison with the non-doped layer. Similarly, the electron injection layer adjacent to the cathode is n-doped with a stable, donor-type molecule with a high molecular mass and exhibits a significantly increased electron conductivity.Type: ApplicationFiled: March 23, 2003Publication date: February 16, 2006Inventors: Jan Blochwitz, Karl Leo, Martin Pfeiffer, Zhou Xiang
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Publication number: 20050236973Abstract: The invention relates to a light-emitting apparatus consisting of a conductor plate and a light-emitting component having organic layers. The component comprises at least one charge carrier transport layer for electrons and/or holes from an organic material (5, 9, 25, 29, 45, 49) and a light-emitting layer of an organic material (7, 27, 47), and is characterized in that the organic sequence of layers is applied to a conductor plate as substrate and provided with at least one doped transport layer to improve electron and/or hole injection. In addition, layers to improve substrate-side electron or hole injection (3, 23, 43) and smoothing layers (4, 24) may be used.Type: ApplicationFiled: December 19, 2003Publication date: October 27, 2005Inventors: Karl Leo, Jan Blochwitz-Nimoth, Martin Pfeiffer
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Publication number: 20050110009Abstract: A light-emitting component comprising organic layers and having several layers between a base contact and a cover contact, the corresponding process for its preparation. At least one polymer layer and two molecular layers are arranged, so that when the cover contact is a cathode, the layer adjacent to the cover contact is designed as an electron-transporting molecular layer and is doped with an organic or inorganic donor, the electron-transporting layer comprising a principal organic substance and a donor-type doping substance, the molecular weight of the dopant being more than 200 g/mole. When the cover contact is an anode, the layer adjacent to the cover contact is designed as a p-doped hole-transporting molecular layer and is doped with an organic or inorganic acceptor, the hole-transporting layer comprising a principal organic substance and an acceptor-like doping substance, the molecular weight of the dopant being more than 200 g/mole.Type: ApplicationFiled: August 27, 2004Publication date: May 26, 2005Inventors: Jan Blochwitz-Nimoth, Gildas Sorin
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Publication number: 20040251816Abstract: A light emitting component with organic layers, e.g., an organic light-emitting diode, which includes a substrate, at least one light emitting layer, and at least one charge carrier transport layer, having a cathode on the substrate and light emission through the anode. The light emitting component may further include a transport layer that is p-doped with an organic material.Type: ApplicationFiled: August 6, 2004Publication date: December 16, 2004Inventors: Karl Leo, Jan Blochwitz-Nimoth, Martin Pfeiffer
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Publication number: 20040062949Abstract: The invention relates to a light-emmiting component having organic layers, in particular to an organic light-emmiting diode. The component has at least one doped charge carrier transport layer (2), a light-emmiting layer (4) and contact layers (1, 5) and also has a blocking layer (3; 3′) wherein an organic material is provided between the charge carrier transport layer (2, 2′) and the light-emmiting layer (4). The energy levels of the charge carried transport layer are chosen in such a way that efficient doping is possible and the blocking layer nevertheless ensures that non-radiating recombination processes on the interface with the emitting layer are prevented.Type: ApplicationFiled: October 21, 2003Publication date: April 1, 2004Inventors: Martin Pfeiffer, Karl Leo, Jan Blochwitz-Niemoth, Xiang Zhou