Patents by Inventor Annette Steudel

Annette Steudel 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: 20180342684
    Abstract: A phosphorescent metal complex comprising at least one ligand substituted with a group of formula (IIIa), (IIIb) or (IIIc): wherein Y is selected from O, S, a substituted carbon atom; and a substituted silicon atom; Z in each occurrence is independently selected from N and P; R4 independently in each occurrence is a substituent; R5 independently in each occurrence is H or a substituent; x independently in each occurrence is 0, 1, 2 or 3; y and z in each occurrence are independently 0, 1, 2, 3 or 4. The group of formula (IIIa), (Mb) or (IIIc) may be directly bound to the ligand or spaced apart therefrom by a spacer group. The phosphorescent metal complex may be used as a light-emitting material in an organic light-emitting device.
    Type: Application
    Filed: September 25, 2015
    Publication date: November 29, 2018
    Inventors: Annette Steudel, Florence Bourcet
  • Patent number: 9963550
    Abstract: A polymer comprising repeat units of formula (I) and repeat units of formula (II): wherein: Ar1 and Ar2 independently in each occurrence represents an aryl or heteroaryl group that may be unsubstituted or substituted with one or more substituents; Ar3 represents a fused aromatic or heteroaromatic group that may be unsubstituted or substituted with one or more substituents; R is a substituent; m is 0, 1 or 2 with the proviso that Ar2 is not phenanthrene if m is 1; each R9 is independently a substituent, and the two groups R9 may be linked to form a ring; each z is independently 0, 1 or 2; and each R10 is independently a substituent. The polymer may be used in an organic light-emitting device.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: May 8, 2018
    Assignees: Cambridge Display Technology Limited, Sumitomo Chemical Company Limited
    Inventors: Kiran Kamtekar, Annette Steudel, Martin Humphries
  • Publication number: 20180076397
    Abstract: The present invention relates to a semiconducting material comprising an electron transport matrix compound comprising at least one electron transporting structural moiety and at least one polar structural moiety; a matrix compound and electronic device utilizing the semiconducting material.
    Type: Application
    Filed: February 18, 2016
    Publication date: March 15, 2018
    Inventors: Julien Frey, Annette Steudel
  • Patent number: 9873831
    Abstract: A co-polymer comprising a repeat unit of formula (I): wherein Ar1, Ar2 and Ar3 each independently represent an aryl or heteroaryl group that may be unsubstituted or substituted with one or more substituents, the copolymer further comprising a conjugation-breaking repeat unit that does not provide any conjugation path between repeat units adjacent to the conjugation-breaking repeat unit. The copolymer may be used as a host material of a phosphorescent material in a light-emitting layer of an organic light-emitting device.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: January 23, 2018
    Assignees: Cambridge Display Technology Limited, Sumitomo Chemical Company Limited
    Inventors: Annette Steudel, Kiran Kamtekar
  • Patent number: 9812644
    Abstract: A polymer comprising repeat units of formula (I) and one or more co-repeat units: Ar1 in each occurrence independently represent an aryl or heteroaryl group; R1 and R2 in each occurrence independently represent a substituent; p independently in each occurrence is 0 or a positive integer; Sp represents a spacer group comprising at least one carbon or silicon atom spacing the two groups Ar1 apart; and each group Ar1 is bound to an aromatic group of a co-repeat unit. The polymer may form a charge-transporting layer of an OLED or may be a host material used with a luminescent dopant in a light-emitting layer of an OLED.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: November 7, 2017
    Assignees: Cambridge Display Technology Limited, Sumitomo Chemical Company Limited
    Inventors: Kiran Kamtekar, Annette Steudel
  • Publication number: 20170309837
    Abstract: A composition comprising a phosphorescent compound of formula (I) and a polymer comprising a repeat unit of formula (II) Ar1 is an aryl or heteroaryl group. R2 is a substituent. A is independently in each occurrence N or CR3 wherein R3 is H or a substituent. M is a transition metal or metal ion. x is a positive integer of at least 1. y is 0 or a positive integer. L1 is a mono- or polydentate ligand. R1 is a substituent. z is 0 or a positive integer. X is O or S. The phosphorescent compound of formula (I) may be mixed with the polymer or may be covalently bound thereto. The composition may be used in the light-emitting layer of an organic light-emitting device.
    Type: Application
    Filed: November 28, 2014
    Publication date: October 26, 2017
    Applicants: Cambridge Display Technology Limited, Sumitomo Chemical Company Limited
    Inventors: Florence Bourcet, Annette Steudel, Richard J Wilson
  • Publication number: 20170054079
    Abstract: The present invention relates to processes for the preparation of iodinated compounds of formula (I): (Formula (I)) wherein R1 is the same or different in each occurrence and is a substituent; m independently in each occurrence is 0, 1, 2 or 3; and X independently in each occurrence is NR2, PR2, —CR22—, —SiR22, O or S wherein R2 is the same or different in each occurrence and is a substituent.
    Type: Application
    Filed: March 30, 2015
    Publication date: February 23, 2017
    Inventors: Florence Bourcet, Annette Steudel
  • Patent number: 9559307
    Abstract: A composition comprising a polymer and a phosphorescent material wherein the polymer comprises repeat units of formula (I): wherein A is a heteroaryl group containing a nitrogen atom, and A may be unusubstituted or substituted with one or more substituents; R1 in each occurrence is independently a substituent; and n is 0, 1, 2, 3 or 4.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: January 31, 2017
    Assignees: Cambridge Display Technology, Ltd., Sumitomo Chemical Company Limited
    Inventors: Annette Steudel, Florence Bourcet, Kiran Kamtekar
  • Publication number: 20150376495
    Abstract: A co-polymer comprising a repeat unit of formula (I): wherein Ar1, Ar2 and Ar3 each independently represent an aryl or heteroaryl group that may be unsubstituted or substituted with one or more substituents, the copolymer further comprising a conjugation-breaking repeat unit that does not provide any conjugation path between repeat units adjacent to the conjugation-breaking repeat unit. The copolymer may be used as a host material of a phosphorescent material in a light-emitting layer of an organic light-emitting device.
    Type: Application
    Filed: June 25, 2015
    Publication date: December 31, 2015
    Applicants: Cambridge Display Technology Limited, Sumitomo Chemical Company Limited
    Inventors: Annette Steudel, Kiran Kamtekar
  • Patent number: 9159929
    Abstract: A monomer for use in manufacturing a conjugated polymer, the monomer having a structure as shown formula (2): Ar1, Ar2 and Ar3 are independently selected from optionally substituted aryl or heteroaryl, X1 and X3 both independently comprise a leaving group capable of participating in polymerization and Z represents a direct bond or an optionally substituted bridging atom.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: October 13, 2015
    Assignees: CAMBRIDGE DISPLAY TECHNOLOGY LIMITED, CDT OXFORD LIMITED
    Inventors: Mark Levence Leadbeater, Sophie Heidenhain, Annette Steudel, Daniel Hicks
  • Publication number: 20150274890
    Abstract: A polymer comprising repeat units of formula (I) and repeat units of formula (II): wherein: Ar1 and Ar2 independently in each occurrence represents an aryl or heteroaryl group that may be unsubstituted or substituted with one or more substituents; Ar3 represents a fused aromatic or heteroaromatic group that may be unsubstituted or substituted with one or more substituents; R is a substituent; m is 0, 1 or 2 with the proviso that Ar2 is not phenanthrene if m is 1; each R9 is independently a substituent, and the two groups R9 may be linked to form a ring; each z is independently 0, 1 or 2; and each R10 is independently a substituent. The polymer may be used in an organic light-emitting device.
    Type: Application
    Filed: March 31, 2015
    Publication date: October 1, 2015
    Applicants: Cambridge Display Technology Limited, Sumitomo Chemical Co., Ltd.
    Inventors: Kiran Kamtekar, Annette Steudel, Martin Humphries
  • Publication number: 20150171351
    Abstract: A compound of formula (I): wherein R1 in each occurrence is independently H or a substituent; R2 in each occurrence is independently a substituent; p in each occurrence is 0, 1, 2, 3 or 4 and Y is a ligand, with the proviso that at least one R1 is a substituent or at least one p is at least 1.
    Type: Application
    Filed: July 9, 2013
    Publication date: June 18, 2015
    Inventors: Annette Steudel, Valery Kozhevnikov
  • Publication number: 20150162551
    Abstract: A phosphorescent compound of formula (I): wherein: M is a transition metal; L in each occurrence is independently a mono- or poly-dentate ligand; R8, R9, R10 and R11 are each independently H or a substituent; D1 and D2 are each independently a dendron; x is at least 1; y is 0 or a positive integer; z1 and z2 are each independently 0 or a positive integer; and n1 and n2 are each independently 0 or 1 with the proviso that at least one of n1 and n2 is 1. The compound may be a phosphorescent compound of an organic light-emitting device.
    Type: Application
    Filed: November 21, 2014
    Publication date: June 11, 2015
    Applicants: Cambridge Display Technology Limited, Sumitomo Chemical Company Limited
    Inventor: Annette Steudel
  • Patent number: 8981354
    Abstract: Light-emitting and/or charge transporting polymers, methods of making the same, and organic light emitting devices comprising such polymers, the polymers comprising a repeat unit of formula (I): —(Ar)q-Sp-CT-Sp-(Ar)q—??(I) in which CT represents a conjugated charge-transporting group, each Ar independently represents an optionally substituted aryl or heteroaryl group, q is at least 1, and each Sp independently represents a spacer group forming a break in conjugation between Ar and CT.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: March 17, 2015
    Assignees: Cambridge Display Technology Limited, Sumitomo Chemical Company Limited
    Inventors: Annette Steudel, Richard Owoare
  • Publication number: 20150001515
    Abstract: A composition comprising a polymer and at least one phosphorescent light-emitting dopant wherein: the polymer comprises a polymer backbone and charge transporting groups pendant from the polymer backbone; the polymer backbone is partially conjugated; and the polymer has a triplet energy level of at least 2.4 eV.
    Type: Application
    Filed: December 20, 2012
    Publication date: January 1, 2015
    Inventor: Annette Steudel
  • Publication number: 20150001509
    Abstract: An OLED formed on a glass or plastic substrate includes an anode, a cathode, and at least one light emitting layer between the anode and cathode. Additional layers may include hole transporting, electron transporting, hole blocking and electron blocking layers.
    Type: Application
    Filed: June 27, 2014
    Publication date: January 1, 2015
    Inventors: Annette Steudel, Kiran Kamtekar, Martin Humphries
  • Patent number: 8883320
    Abstract: A light emitting device comprising: an anode; a cathode; a light emissive layer located between the anode and the cathode, said light emissive layer comprising a charged metal complex for emitting light and a counterion or counterions with sufficient charge to balance the change on the charged metal complex; characterized in that the counterion or counterions are substantially immobile so (that light output from the device is immediate, provided that the combined charged metal complex and counterion do not have General Formula: (I) or (II); where C—N is a cyclometallated liquid.
    Type: Grant
    Filed: May 16, 2005
    Date of Patent: November 11, 2014
    Assignee: CDT Oxford Ltd.
    Inventors: Michael Frampton, Sophie Heidenhain, Annette Steudel, Jonthan N. G. Pillow, Scott Watkins, Nigel Male
  • Patent number: 8883321
    Abstract: Compositions of a mixture of a thiol material and a material that contains a reactive unsaturated carbon-carbon bond that can be polymerized to form a charge-transporting or luminescent film are described, as is an organic light-emitting diode (OLED) device comprising at least one such charge-transporting or emissive layer that has been formed by polymerizing a thiol material and an ene material. The process for forming such an OLED, including the deposition of a layer of material comprising the polymerizable composition, from solution, exposing said layer to actinic radiation through a mask, and then optionally developing said film to form a photopatterned film, is also disclosed.
    Type: Grant
    Filed: October 18, 2010
    Date of Patent: November 11, 2014
    Assignee: CDT Oxford Limited
    Inventors: Annette Steudel, Alan Mosley, Mark D. Andrews, Kai Look
  • Publication number: 20140217376
    Abstract: An organic light-emitting device comprises a first electrode, a second electrode and at least one light-emitting layer between the first and second electrodes wherein the device comprises a plurality of light-emitters that together provide a source of white light. A first light-emitting layer comprises a host material and a first light-emitter of the plurality of light-emitters that emits light having a peak photo luminescent wavelength in the range of 580-610 nm; and wherein a LUMO of the first light-emitter is no more than 0.2 eV further from vacuum than a LUMO level of the host material.
    Type: Application
    Filed: May 2, 2012
    Publication date: August 7, 2014
    Applicants: Sumitomo Chemical Company Limited, Cambridge Display Technology Limited
    Inventor: Annette Steudel
  • Publication number: 20140175415
    Abstract: A composition comprising a polymer and a phosphorescent material wherein the polymer comprises repeat units of formula (I): wherein A is a heteroaryl group containing a nitrogen atom, and A may be unusubstituted or substituted with one or more substituents; R1 in each occurrence is independently a substituent; and n is 0, 1, 2, 3 or 4.
    Type: Application
    Filed: December 20, 2013
    Publication date: June 26, 2014
    Applicants: Sumitomo Chemical Company Limited, Cambridge Display Technology,
    Inventors: Annette Steudel, Florence Bourcet, Kiran Kamtekar