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).
-
Patent number: 8981354Abstract: 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: GrantFiled: May 12, 2011Date of Patent: March 17, 2015Assignees: Cambridge Display Technology Limited, Sumitomo Chemical Company LimitedInventors: Annette Steudel, Richard Owoare
-
Publication number: 20150001509Abstract: 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: ApplicationFiled: June 27, 2014Publication date: January 1, 2015Inventors: Annette Steudel, Kiran Kamtekar, Martin Humphries
-
Publication number: 20150001515Abstract: 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: ApplicationFiled: December 20, 2012Publication date: January 1, 2015Inventor: Annette Steudel
-
Patent number: 8883321Abstract: 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: GrantFiled: October 18, 2010Date of Patent: November 11, 2014Assignee: CDT Oxford LimitedInventors: Annette Steudel, Alan Mosley, Mark D. Andrews, Kai Look
-
Patent number: 8883320Abstract: 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: GrantFiled: May 16, 2005Date of Patent: November 11, 2014Assignee: CDT Oxford Ltd.Inventors: Michael Frampton, Sophie Heidenhain, Annette Steudel, Jonthan N. G. Pillow, Scott Watkins, Nigel Male
-
Publication number: 20140217376Abstract: 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: ApplicationFiled: May 2, 2012Publication date: August 7, 2014Applicants: Sumitomo Chemical Company Limited, Cambridge Display Technology LimitedInventor: Annette Steudel
-
Publication number: 20140175415Abstract: 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: ApplicationFiled: December 20, 2013Publication date: June 26, 2014Applicants: Sumitomo Chemical Company Limited, Cambridge Display Technology,Inventors: Annette Steudel, Florence Bourcet, Kiran Kamtekar
-
Publication number: 20140151659Abstract: An unsubstituted or substituted phosphorescent compound of formula (I): Wherein: M is a transition metal; L in each occurrence is independently a mono- or poly-dentate ligand; R8 is H or a substituent; R9 and R10 are each independently selected from the group consisting of branched, linear or cyclic C1-20 alkyl wherein non-adjacent C atoms of the C1-20 alkyl may be replaced with —O—, —S—, —NR12—, —SiR122— or —COO— and one or more H atoms may be replaced with F or —NR122, wherein R12 is H or a substituent; R11 in each occurrence is independently H or a substituent, wherein two groups R11 may be linked to form a ring; x is at least 1; y is 0 or a positive integer; and z1, z2 and z3 are each independently 0 or a positive integer.Type: ApplicationFiled: November 26, 2013Publication date: June 5, 2014Applicants: Sumitomo Chemical Company Limited, Cambridge Display TechnologyInventors: Kiran Kamtekar, Annette Steudel
-
Publication number: 20140151660Abstract: 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: ApplicationFiled: November 26, 2013Publication date: June 5, 2014Applicants: Sumitomo Chemical Company Limited, Cambridge Display TechnologyInventors: Kiran Kamtekar, Annette Steudel
-
Patent number: 8614011Abstract: An electroluminescent material comprises the following structural unit: where X is selected from a group consisting of NR, O, S, SO, SO2, CR2, PR, POR, BR, SiR2; where R is a substituent group and Ar1 and Ar2 comprise aromatic rings; and, wherein Ar1 or Ar2 is fused to a further aryl system Ar3. An optical device comprises a first electrode for injection of positive charge carriers, a second electrode for injection of negative charge carriers and a layer located between the first and second electrode comprising the electroluminescent material.Type: GrantFiled: July 23, 2009Date of Patent: December 24, 2013Assignees: Cambridge Display Technology Limited, Sumitomo Chemical Co., Ltd.Inventors: Annette Steudel, Thomas Pounds
-
Publication number: 20130299787Abstract: An organic light-emitting device comprises an anode; a cathode; a charge transporting layer comprising a charge-transporting material doped with a light-emitting dopant between the anode and the cathode; and a light-emitting layer between the anode and the cathode. The x-coordinate value and/or the y-coordinate value of CIE(x,y) coordinates of light emitted from the device is no more than 0.1, and preferably no more than 0.05, from the respective x- or y-coordinate value of a control device in which the charge transporting layer is not doped with a light-emitting dopant. The light emitting layer and charge transport material preferably comprise polymers including aryl or heteroaryl repeat units.Type: ApplicationFiled: October 18, 2011Publication date: November 14, 2013Applicants: SUMITOMO CHEMICAL COMPANY LIMITED, CAMBRIDGE DISPLAY TECHNOLOGY LIMITEDInventors: Annette Steudel, Oscar Fernandez
-
Patent number: 8569752Abstract: A semiconductive hole transport material containing polar substituent groups, the polar substituent groups substantially not affecting the electronic properties of the hole transport material and the hole transport material being soluble in a polar solvent.Type: GrantFiled: April 30, 2012Date of Patent: October 29, 2013Assignees: Cambridge Display Technology Limited, CDT Oxford LimitedInventors: Mary J. McKiernan, Annette Steudel, Caroline Towns
-
Publication number: 20130146852Abstract: 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: ApplicationFiled: May 12, 2011Publication date: June 13, 2013Applicants: SUMITOMO CHEMICAL COMPANY LIMITED, CAMBRIDGE DISPLAY TECHNOLOGY LIMITEDInventors: Annette Steudel, Richard Owoare
-
Patent number: 8415029Abstract: 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 polymerisation and Z represents a direct bond or an optionally substituted bridging atom.Type: GrantFiled: December 23, 2005Date of Patent: April 9, 2013Assignees: Cambridge Display Technology Limited, CDT Oxford LimitedInventors: Mark Leadbeater, Sophie Heidenhain, Annette Steudel, Daniel Hicks
-
Patent number: 8404361Abstract: A device comprising an electroluminescent copolymer comprising a light-emitting repeat unit in the polymer backbone and wherein the repeat unit is conjugatively separate from the polymer backbone.Type: GrantFiled: July 31, 2009Date of Patent: March 26, 2013Assignees: Cambridge Display Technology Limited, Sumitomo Chemical Co., LimitedInventor: Annette Steudel
-
Patent number: 8399605Abstract: A semiconductive polymer comprising a first repeat unit in the polymer backbone comprising general formula 1: where a=1 or 2; b=0 or 1; and c=0, 1 or 2, provided that when c=0 then b=0; Ar1, Ar2, Ar3, Ar4, Ar5, and Ar6 each independently represent an aryl or heteroaryl ring or a fused derivative thereof; characterized in that at least one of Ar1, Ar2, Ar4, and Ar5 is non-conjugating; and provided that (a) when a=1, Ar1 is not linked to Ar2 by a direct bond, (b) when b=1 and c=1, Ar4 is not linked to Ar5 by a direct bond, (c) when b=0 and c=1, Ar2 is not linked to Ar5 by a direct bond, (d) when a=2, the Ar1 groups are not linked by a single bond, and (e) when c=2, the Ar5 groups are not linked by a single bond.Type: GrantFiled: December 18, 2006Date of Patent: March 19, 2013Assignees: Cambridge Display Technology Limited, CDT Oxford LimitedInventors: Annette Steudel, Nalinkumar Lallubhai Patel, Jonathan Pillow, Mary McKiernan, Sophie Heidenhain, Natasha Conway
-
Patent number: 8308987Abstract: A conductive composition for use in an organic light-emitting device comprising: a polycation having a conjugated backbone; a polyanion to balance the charge on the polycation; and a semiconductive hole transport polymer containing side groups pendant from the polymer backbone, each side group comprising one or more groups XY, where XY represents a group with a high dissociation constant such that it is ionized completely.Type: GrantFiled: July 14, 2006Date of Patent: November 13, 2012Assignees: Cambridge Display Technology Limited, CDT Oxford LimitedInventors: Mary J. McKiernan, Jeremy Burroughes, Annette Steudel
-
Publication number: 20120217490Abstract: A semiconductive hole transport material containing polar substituent groups, the polar substituent groups substantially not affecting the electronic properties of the hole transport material and the hole transport material being soluble in a polar solvent.Type: ApplicationFiled: April 30, 2012Publication date: August 30, 2012Applicants: CDT OXFORD LIMITED, CAMBRIDGE DISPLAY TECHNOLOGY LIMITEDInventors: Carl R. Towns, Caroline Towns, Mary J. McKiernan, Annette Steudel
-
Patent number: 8173996Abstract: A semiconductive hole transport material containing polar substituent groups, the polar substituent groups substantially not affecting the electronic properties of the hole transport material and the hole transport material being soluble in a polar solvent.Type: GrantFiled: October 11, 2005Date of Patent: May 8, 2012Assignees: Cambridge Display Technology Limited, CDT Oxford LimitedInventors: Carl R. Towns, Caroline Towns, legal representative, Mary J. McKiernan, Annette Steudel
-
Publication number: 20110186826Abstract: An electroluminescent material comprises the following structural unit: where X is selected from a group consisting of NR, O, S, SO, SO2, CR2, PR, POR, BR, SiR2; where R is a substituent group and Ar1 and Ar2 comprise aromatic rings; and, wherein Ar1 or Ar2 is fused to a further aryl system Ar3. An optical device comprises a first electrode for injection of positive charge carriers, a second electrode for injection of negative charge carriers and a layer located between the first and second electrode comprising the electroluminescent material.Type: ApplicationFiled: July 23, 2009Publication date: August 4, 2011Applicants: CAMBRIDGE DISPLAY TECHNOLOGY LIMITED, SUMATION COMPANY LIMITEDInventors: Annette Steudel, Thomas Pounds