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
Abstract: A copolymer comprising a repeat unit of Formula (I) and at least one further repeat unit: Formula (I) wherein: wherein: Ar1 and Ar2 are each independently selected from aryl and heteroaryl, each of which is independently unsubstituted or substituted with one or more substituents; each R is independently a substituent; each n is independently 0, 1 or 2; each m is independently 0, 1, 2 or 3, and at least one of the repeat units of the polymer is a partially conjugating repeat unit.
Type:
Grant
Filed:
December 23, 2013
Date of Patent:
May 8, 2018
Assignees:
Cambridge Display Technology Limited, Sumitomo Chemical Company Limited
Inventors:
Philip Stackhouse, Sophie Barbara Heidenhain, Ruth Pegington, Jonathan Pillow, Martin Humphries, Tomoyasu Yoshida
Abstract: A method of forming a n-doped semiconductor layer wherein a film comprising an organic semiconductor and an n-dopant reagent is irradiated by light having a wavelength that is within an absorption range of the organic semiconductor, and wherein an absorption maximum wavelength of the n-dopant precursor is shorter than any peak wavelength of the light. The n-doped semiconductor layer may be an electron-injection layer of an organic light-emitting device.
Type:
Grant
Filed:
July 26, 2016
Date of Patent:
May 1, 2018
Assignees:
Cambridge Display Technology Limited, Sumitomo Chemical Corporation Limited
Abstract: A polymer comprising one or more optionally substituted repeat units of formula (I): wherein each Ar1 independently represents a substituted or unsubstituted aromatic or heteroaromatic group; each Ar2 independently represents a substituted or unsubstituted aromatic or heteroaromatic group; n and m in each occurrence is at least 1; and R1 and R2 are substituents wherein R1 and R2 are different.
Type:
Application
Filed:
November 21, 2017
Publication date:
April 5, 2018
Applicants:
Sumimoto Chemical Company Limited, Cambridge Display Technology Limited
Inventors:
Ruth Pegington, Sophie Barbara Heidenhain, Mary J. McKiernan
Abstract: An OLED comprising a hole-transporting layer and light-emitting layer wherein the hole-transporting layer comprises a hole-transporting polymer wherein no more than 5% of the polystyrene equivalent polymer weight measured by gel permeation chromatography consists of chains with weight of less than 50,000.
Type:
Application
Filed:
November 21, 2017
Publication date:
March 22, 2018
Applicants:
Sumitomo Chemical Company Limited, Cambridge Display Technology Limited
Abstract: A charge storage device and system comprises an anode assembly and a cathode assembly, each of the assemblies comprising a charge storage layer of a conjugated polymer material, wherein the conjugated polymer material of the charge storage layer of the cathode assembly is air stable and non-ionic in its discharged state, and wherein the conjugated polymer material of the charge storage layer of the anode assembly includes is air stable and non-ionic in its discharged state. The polymer materials are fully conjugated along the main chain, and are made by processes that do not involve oxidative or electrochemical polymerisation. The charge storage layers are formed from solutions of these polymers, and are amorphous and continuous.
Abstract: Compound, Composition and Organic Light-Emitting Device A compound of formula (I) (Formula (I)) wherein X is O, S, NR8, CR82 or SiR82 wherein R8 in each occurrence is independently a substituent; R1, R5 and R6 are independently in each occurrence a substituent; x independently in each occurrence is 0, 1, 2, 3 or 4; and y independently in each occurrence is 0, 1 or 2. The compound may be provided as a sidechain, end group or backbone group of a polymer. The compound may be used as a host for a phosphorescent light-emitting material in an organic light-emitting device.
Type:
Application
Filed:
February 16, 2016
Publication date:
March 1, 2018
Applicants:
Cambridge Display Technology Limited, Sumitomo Chemical Company Limited
Abstract: Provided is a solution comprising a polymer and an organic semiconductor compound, wherein the semiconductor compound is a thiophene derivative, and wherein the solvent is a mixture comprising a) at least one of 4-methyl anisole, indane and an alkylbenzene with a linear or branched alkyl group containing from 4 to 7 carbon atoms; and b) at least one of tetrahydronaphthalin and 1,2,4-trimethylbenzene.
Abstract: Provided is a polymer blend for a semiconducting layer of an organic electronic device, comprising: a first polymer; a second polymer which is different from the first polymer; and a semiconductor compound selected from the group of pentacene derivatives and thiophene derivatives. The semiconductor compound is distributed homogeneously in the semiconducting layer in the direction parallel to the surface of the electrodes. This improved lateral distribution of the semiconductor compound in the semiconducting layer provides a reduced contact resistance, particularly for short channel length devices.
Type:
Application
Filed:
March 1, 2016
Publication date:
February 22, 2018
Applicants:
Cambridge Display Technology Limited, Sumitomo Chemical Company Limited
Abstract: A light-emitting polymer comprising a light-emitting repeat unit in a backbone of the polymer, wherein the polymer has an anisotropy of no more than 0.8 and wherein a transition dipole moment of the light-emitting repeat unit is aligned with the polymer backbone.
Type:
Application
Filed:
February 18, 2016
Publication date:
February 8, 2018
Applicants:
Cambridge Display Technology Limited, Sumitomo Chemical Company Limited
Inventors:
Ruth Pegington, Michael Cass, David Mohamad, Matthew Roberts, William Tarran, Martin Humphries
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
Abstract: A polymer comprising a repeat unit of formula (I): wherein R1 in each occurrence is independently H or a substituent; R2 in each occurrence is independently a substituent; and x is 0, 1, 2 or 3. The polymer may be used as a light-emitting polymer in an organic light-emitting device.
Type:
Application
Filed:
October 20, 2015
Publication date:
January 18, 2018
Applicants:
Cambridge Display Technology Limited, Sumitomo Chemical Company Limited
Abstract: A polymer comprising one or more optionally substituted repeat units of formula (I): (I) wherein each Ar1 independently represents a substituted or unsubstituted aromatic or heteroaromatic group; each Ar2 independently represents a substituted or unsubstituted aromatic or heteroaromatic group; n and m in each occurrence is at least 1; and R1 and R2 are substituents wherein R1 and R2 are different.
Type:
Grant
Filed:
January 16, 2013
Date of Patent:
January 2, 2018
Assignees:
Sumitomo Chemical Company Limited, Cambridge Display Technology Limited
Inventors:
Ruth Pegington, Sophie Barbara Heidenhain, Mary J. McKiernan
Abstract: An OLED comprising a hole-transporting layer and light-emitting layer wherein the hole-transporting layer comprises a hole-transporting polymer wherein no more than 5% of the polystyrene equivalent polymer weight measured by gel permeation chromatography consists of chains with weight of less than 50,000.
Type:
Grant
Filed:
October 21, 2015
Date of Patent:
January 2, 2018
Assignees:
Sumitomo Chemical Company Limited, Cambridge Display Technology Limited
Abstract: Organic Light-Emitting Device An organic light-emitting device (100) comprising an anode (103); a cathode (109); a light-emitting layer (107) between the anode and the cathode; and a hole-transporting layer (105) between the anode and the cathode, wherein the light-emitting layer comprises a light-emitting compound of formula (I) and the hole-transporting layer comprises a hole-transporting material having a HOMO level that is no more than 5.1 e V from vacuum level: N N ML x R 2 (R) m (R) n y (I) wherein: R in each occurrence is independently a substituent; R 2 is H or a substituent; m is 0, 1 or 2; n is 0, 1, 2, 3 or 4; M is a transition metal; L is a ligand; y is at least 1; and x is 0 or a positive integer.
Type:
Application
Filed:
December 1, 2015
Publication date:
December 21, 2017
Applicants:
Cambridge Display Technology Limited, Sumitomo Chemical Company Limited
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
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
Abstract: An organic light-emitting device (100) comprising an anode (103); a cathode (109); a light-emitting layer (107) between the anode and the cathode; a first hole-transporting layer (105A) comprising a first conjugated hole-transporting polymer between the anode and the light-emitting layer; and a second hole-transporting layer (105B) comprising a second conjugated hole-transporting polymer between the first hole-transporting layer and the light-emitting layer, wherein a lowest excited state energy level of the first hole-transporting polymer is lower than the lowest excited state energy of the second hole-transporting polymer.
Type:
Application
Filed:
September 25, 2015
Publication date:
October 19, 2017
Applicants:
Cambridge Display Technology Limited, Sumitomo Chemical Company Limited
Abstract: There is disclosed a method for preparing a modified electrode for an organic electronic device, wherein said modified electrode comprises a surface modification layer, comprising: (i) depositing a solution comprising M(tfd)3, wherein M is Mo, Cr or W, and at least one solvent onto at least a part of at least one surface of said electrode; and (ii) removing at least some of said solvent to form said surface modification layer on said electrode.
Abstract: A compound of formula (I) wherein: X is0, S, NR11, CR11 2or SiR11 2wherein R11 in each occurrence is independently a substituent; R1is a substituent; R2, R3, and R4are each independently H or a substituent;R5and R6independently in each occurrence is a substituent;m independently in each occurrence is 0, 1 or 2; and n independently in each occurrence is 0, 1, 2, 3 or 4. The compound may be used as a host for a phosphorescent light-emitting material in an organic light-emitting device.
Type:
Application
Filed:
September 25, 2015
Publication date:
October 12, 2017
Applicants:
Cambridge Display Technology Limited, Sumitomo Chemical Company Limited