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).

  • Publication number: 20080203406
    Abstract: 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 tra
    Type: Application
    Filed: June 16, 2005
    Publication date: August 28, 2008
    Applicants: NOVALDE GMBH, TECHNISCHE UNIVERSITÄT DRESDEN
    Inventors: Gufeng He, Martin Pfeiffer, Jan Blochwitz-Nimoth
  • Publication number: 20080160669
    Abstract: 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: Application
    Filed: February 8, 2008
    Publication date: July 3, 2008
    Inventors: Jan Blochwitz-Nimoth, Gildas Sorin
  • Publication number: 20080143250
    Abstract: 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, a
    Type: Application
    Filed: December 12, 2007
    Publication date: June 19, 2008
    Applicant: NOVALED AG
    Inventors: Jan Blochwitz-Nimoth, Sven Murano, Jan Birnstock
  • Patent number: 7355197
    Abstract: 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: Grant
    Filed: August 27, 2004
    Date of Patent: April 8, 2008
    Assignee: NovaLED GmbH
    Inventors: Jan Blochwitz-Nimoth, Gildas Sorin
  • Patent number: 7345300
    Abstract: 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: Grant
    Filed: May 22, 2003
    Date of Patent: March 18, 2008
    Inventors: Dashan Qin, Jan Blochwitz-Nimoth, Xiang Zhou, Martin Pfeiffer
  • Patent number: 7274141
    Abstract: 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: Grant
    Filed: July 5, 2002
    Date of Patent: September 25, 2007
    Assignee: NovaLED GmbH
    Inventors: Karl Leo, Jan Blochwitz-Nimoth, Martin Pfeiffer
  • Publication number: 20060250076
    Abstract: 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: Application
    Filed: April 12, 2006
    Publication date: November 9, 2006
    Inventors: Michael Hofmann, Jan Birnstock, Jan Blochwitz-Nimoth, Ansgar Werner, Martin Pfeiffer, Kentaro Harada
  • Publication number: 20060231843
    Abstract: 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: Application
    Filed: May 22, 2003
    Publication date: October 19, 2006
    Inventors: Dashan Qin, Jan Blochwitz-Nimoth, Xiang Zhou, Martin Pfeiffer
  • Patent number: 7074500
    Abstract: 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: Grant
    Filed: November 20, 2001
    Date of Patent: July 11, 2006
    Assignee: NovaLED GmbH
    Inventors: Martin Pfeiffer, Karl Leo, Jan Blochwitz-Niemoth, Xiang Zhou
  • Publication number: 20060061260
    Abstract: 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: Application
    Filed: September 8, 2005
    Publication date: March 23, 2006
    Inventors: Karl Leo, Jan Blochwitz-Nimotz, Joerg Amelung, Hartmut Froeb, Martin Pfeiffer
  • Publication number: 20060049397
    Abstract: 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: Application
    Filed: August 3, 2005
    Publication date: March 9, 2006
    Inventors: Martin Pfeiffer, Jan Blochwitz-Nimoth, Andrea Lux, Josef Salbeck
  • Publication number: 20060033115
    Abstract: 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: Application
    Filed: March 23, 2003
    Publication date: February 16, 2006
    Inventors: Jan Blochwitz, Karl Leo, Martin Pfeiffer, Zhou Xiang
  • Publication number: 20050236973
    Abstract: 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: Application
    Filed: December 19, 2003
    Publication date: October 27, 2005
    Inventors: Karl Leo, Jan Blochwitz-Nimoth, Martin Pfeiffer
  • Publication number: 20050110009
    Abstract: 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: Application
    Filed: August 27, 2004
    Publication date: May 26, 2005
    Inventors: Jan Blochwitz-Nimoth, Gildas Sorin
  • Publication number: 20040251816
    Abstract: 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: Application
    Filed: August 6, 2004
    Publication date: December 16, 2004
    Inventors: Karl Leo, Jan Blochwitz-Nimoth, Martin Pfeiffer
  • Publication number: 20040062949
    Abstract: 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: Application
    Filed: October 21, 2003
    Publication date: April 1, 2004
    Inventors: Martin Pfeiffer, Karl Leo, Jan Blochwitz-Niemoth, Xiang Zhou