US4720432A — Electroluminescent device with organic luminescen…

Claim 1

Independent Claim 74 words

An electroluminescent device comprising in sequence, an anode, an organic hole injecting and transporting zone, an organic electron injecting and transporting zone, and a cathode, characterized in that said organic hole injecting and transporting zone is comprised of a layer in contact with said anode containing a hole injecting porphyrinic compound and a layer containing a hole transporting aromatic tertiary amine interposed between said hole injecting layer and said electron injecting and transporting zone.

Claim 2

Dependent Claim 74 words

An electroluminescent device comprising in sequence, an anode, an organic hole injecting and transporting zone, an organic electron injecting and transporting zone, and a cathode, characterized in that said organic hole injecting and transporting zone is comprised of a layer in contact with said anode containing a hole injecting porphyrinic compound and a layer containing a hole transporting aromatic tertiary amine interposed between said hole injecting layer and said electron injecting and transporting zone.

Claim 3

Dependent Claim 32 words

An electroluminescent device according to claim 1 in which said cathode contains a metal having a work function of less than 4 eV other than an alkali metal and is light transmissive.

Claim 4

Dependent Claim 35 words

An electroluminescent device according to claim 1 in which said hole transporting layer is comprised of a tetraphenyldiamine layer contacting said electron injecting and transporting zone and a triarylamine layer contacting said hole injecting layer.

Claim 5

Dependent Claim 16 words

An electroluminescent device according to claim 1 in which said aromatic tertiary amine is a diphenylamine.

Claim 6

Dependent Claim 14 words

An electroluminescent device according to claim 4 in which said diphenylamine is a carbazole.

Claim 7

Dependent Claim 16 words

An electroluminescent device according to claim 1 in which said aromatic tertiary amine is a triphenylamine.

Claim 8

Dependent Claim 13 words

An electroluminescent device according to claim 6 in which said triphenylamine is N,N,N-triphenylamine.

Claim 9

Dependent Claim 66 words

An electroluminescent device according to claim 1 in which said aromatic tertiary amine satisfies the structural formula: ##STR10## wherein Q 1 and Q 2 are independently aromatic tertiary amine moieties and G is a linking group chosen from the class consisting of phenylene, cycloalkylene having 5 to 7 ring carbon atoms, or alkylene having from 1 to 6 carbon atoms, or a carbon to carbon bond.

Claim 10

Dependent Claim 108 words

An electroluminescent device according to claim 8 in which said aromatic tertiary amine is a triphenylamine satisfying the structural formula: ##STR11## where R 1 and R 2 each independently represents a hydrogen atom, a phenyl group, or an alkyl group of from 1 to 6 carbon atoms or R 1 and R 2 together represent the atoms completing a cycloalkyl group containing from 5 to 7 ring carbon atoms and R 3 and R 4 each independently represents a phenyl group which is in turn substituted with a diphenylamino group, as indicated by the structural formula: ##STR12## wherein R 5 and R 6 are independently selected phenyl groups.

Claim 11

Dependent Claim 16 words

An electroluminescent device according to claim 1 in which said aromatic tertiary amine is a tetraphenyldiamine.

Claim 12

Dependent Claim 49 words

An electroluminescent device according to claim 10 in which said tetraphenyldiamine satisfies the formula: R1 ? ? ##STR13## wherein Are is a phenylene group, n is an integer of from 1 to 4, and Ar, R 7 , R 8 , and R 9 are independently selected phenyl groups.

Claim 13

Dependent Claim 87 words

An electroluminescent device according to claim 1 in which said porphorinic compound is a metal containing porphorinic compound which satisfies the structural formula: ##STR14## wherein Q is --N═ or --C(R)═; M is a metal, metal oxide, or metal halide; R is hydrogen, alkyl, phenalkyl, phenyl, or alkylphenyl, each alkyl moiety containing from 1 to 6 carbon atoms, and T 1 and T 2 represent hydrogen or together complete a unsaturated 6 membered ring containing ring atoms chosen from the group consisting of carbon, nitrogen, and sulfur atoms.

Claim 14

Dependent Claim 78 words

An electroluminescent device according to claim 1 in which said porphorinic compound is a metal free porphorinic compound which satisfies the structural formula: ##STR15## wherein Q is --N═ or --C(R)═; R is hydrogen, alkyl, phenalkyl, phenyl, or alkylphenyl, each alkyl moiety containing from 1 to 6 carbon atoms, and T 1 and T 2 represent hydrogen or together complete a unsaturated 6 membered ring containing ring atoms chosen from the group consisting of carbon, nitrogen, and sulfur atoms.

Claim 15

Dependent Claim 24 words

An electroluminescent device according to claim 1 in which said electron injecting and transporting zone is comprised of a stilbene or chelated oxinoid compound.

Claim 16

Dependent Claim 52 words

An electroluminescent device according to claim 14 in which said chelated oxinoid compound is represented by the formula: ##STR16## wherein Me represents a metal; n is an integer of from 1 to 3; and Z independently in each occurrence represents the atoms completing a nucleus having at least two fused aromatic rings.

Claim 17

Dependent Claim 70 words

An electroluminescent device comprising in sequence an anode, a hole injecting layer comprised of a porphyrinic compound, a hole transporting layer comprised of an aromatic tertiary amine, an electron injecting and transporting layer comprised of a chelated oxinoid compound, and a cathode comprised of a layer consisting essentially of a plurality of metals other than alkali metals, at least one of said metals having work function greater than 4 eV.

Claim 18

Dependent Claim 70 words

An electroluminescent device comprising in sequence an anode, a hole injecting layer comprised of a porphyrinic compound, a hole transporting layer comprised of an aromatic tertiary amine, an electron injecting and transporting layer comprised of a chelated oxinoid compound, and a cathode comprised of a layer consisting essentially of a plurality of metals other than alkali metals, at least one of said metals having work function greater than 4 eV.

Claim 19

Dependent Claim 19 words

An electroluminescent device according to claim 16 in which said anode is opaque and said cathode is light transmissive.

Claim 20

Dependent Claim 34 words

An electroluminescent device according to claim 16 in which said metal having a work function of less than 4 eV includes at least one alkaline earth metal, rare earth metal, or Group III metal.

Claim 21

Dependent Claim 24 words

An electroluminescent device according to claim 16 in which said cathode includes at least one metal having a work function greater than 4 eV.

Claim 22

Dependent Claim 121 words

An electroluminescent device comprising in sequence an opaque anode, a hole injecting layer comprised of a phthalocyanine, a first hole transporting layer comprised of a tetraphenyldiamine, a second hole transporting layer comprised of a triphenylamine, an electron injecting and transporting layer comprised of a chelated oxinoid compound, and a light transmissive cathode comprised of a layer consisting essentially of a plurality of metals other than alkali metals, at least one of said metals having work function greater than 4 eV and being chosen from the group consisting of magnesium, a rare earth metal, or indium, and at least one other of said metals being chosen from the group consisting of aluminum, copper, silver, gold, tin, lead, bismuth, tellurium, indium, and antimony.

Claim 23

Dependent Claim 121 words

An electroluminescent device comprising in sequence an opaque anode, a hole injecting layer comprised of a phthalocyanine, a first hole transporting layer comprised of a tetraphenyldiamine, a second hole transporting layer comprised of a triphenylamine, an electron injecting and transporting layer comprised of a chelated oxinoid compound, and a light transmissive cathode comprised of a layer consisting essentially of a plurality of metals other than alkali metals, at least one of said metals having work function greater than 4 eV and being chosen from the group consisting of magnesium, a rare earth metal, or indium, and at least one other of said metals being chosen from the group consisting of aluminum, copper, silver, gold, tin, lead, bismuth, tellurium, indium, and antimony.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1991-01-18	1991-07-20	1992-01-19	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1995-01-18	1995-07-20	1996-01-19	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1999-01-18	1999-07-20	2000-01-19	$7700.00	Window Closed / Lapsed

Electroluminescent device with organic luminescent medium

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