US5965979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of organic light emitting devices
Assignee: Cambridge Display Technology Ltd
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Filing: 1996-04-17
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Granted: 1999-10-12
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Expires: 2016-04-17
Abstract
Abstract A method of making a light emitting device comprises the laminating together of two self-supporting components, at least one of which has a light emitting layer (12) on an inner surface thereof. A first self-supporting component is formed by coating a first substrate (10) with an organic light emissive material (12). A second self-supporting component is formed by coating a second substrate (2) with an organic material which is one of a light emissive material and a charge transport material (8). The two self-supporting components are laminated together such that the organic materials (8, 12) are located between the substrates (2, 10) in the finished device.
Inventors
- 👤 Richard Henry Friend
- 👤 Andrew Bruce Holmes
- 👤 Stephen Carl Moratti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:51
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/10; H10; H10K; H10K50/00; H10K50/80; H10K50/84; H10K50/841; H10K71/00; H10K71/50; H10K77/00; H10K77/10; H10K77/111
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
161 words
A method of making a light emitting device comprising the laminating together of two self-supporting components, at least one of which has a light emitting layer (12,22,24) on an inner surface thereof, whereby the light emitting layer is located between the components in the finished device, wherein a first one of the self-supporting components is formed by providing on a first substrate (10) a light emissive material constituting the light emitting layer; and the, step of laminating together the two self-supporting components is such that the light emissive material is located between the components in the finished device, characterised in that the light emissive material is an organic material; a second one of the self-supporting components is formed by coating a second substrate (4) with an organic material (8,28) which is a charge transport material; and each of the self-supporting components includes a charge injecting electrode (6,10) for injecting charge carriers of respectively opposite types into the organic light emissive material.
Claim 2
Independent Claim
161 words
A method of making a light emitting device comprising the laminating together of two self-supporting components, at least one of which has a light emitting layer (12,22,24) on an inner surface thereof, whereby the light emitting layer is located between the components in the finished device, wherein a first one of the self-supporting components is formed by providing on a first substrate (10) a light emissive material constituting the light emitting layer; and the, step of laminating together the two self-supporting components is such that the light emissive material is located between the components in the finished device, characterised in that the light emissive material is an organic material; a second one of the self-supporting components is formed by coating a second substrate (4) with an organic material (8,28) which is a charge transport material; and each of the self-supporting components includes a charge injecting electrode (6,10) for injecting charge carriers of respectively opposite types into the organic light emissive material.
Claim 3
Dependent Claim
36 words
A method according to claim 1 wherein either the first or the second substrate comprises a transparent supporting material (4) coated with indium tin oxide (6) to form a first electrode of the light emitting device.
Claim 4
Dependent Claim
21 words
A method according to claim 2 wherein the other one of the substrates comprises aluminium (10) acting as a second electrode.
Claim 5
Dependent Claim
18 words
A method according to claim 1 wherein said organic light emissive material is poly(phenylenevinylene) or a derivative thereof.
Claim 6
Dependent Claim
20 words
A method according to claim 4 wherein the light emissive material is cyanoPPV and the charge transport material is PPV.
Claim 7
Dependent Claim
15 words
A method according to claim 1 wherein the charge transport material is a conducting polymer.
Claim 8
Dependent Claim
27 words
A method according to claim 6 wherein an additional semiconductive charge transport layer (26) is provided on one of the self-supporting components prior to the laminating step.
Claim 9
Dependent Claim
24 words
A method according to claim 6 wherein the conducting polymer is selected from the group comprising polypyrrole, polyaniline, PPV and derivatives, polythiophene and derivatives.
Claim 10
Dependent Claim
22 words
A method according to claim 1 wherein the step of laminating together the two self-supporting substrates comprises simultaneously applying pressure and heat.
Claim 11
Dependent Claim
24 words
A method according to claim 1 wherein a layer of adhesive (20) is used to perform the laminating together of the two self-supporting substrates.
Claim 12
Dependent Claim
11 words
An organic light emitting device made in accordance with claim 1.
Claim 13
Dependent Claim
75 words
An organic light emitting device comprising a self-supporting substrate acting as a first electrode (10) and carrying a first organic semiconductive layer (12,22,24), a second self-supporting substrate acting as a second electrode (4,6) and carrying a second organic layer (8,28), and arranged between the first and second organic layers a layer of adhesive (20), wherein the first organic semiconductive layer is a light emitting layer and the second organic layer is a charge transport layer.
Claim 14
Dependent Claim
75 words
An organic light emitting device comprising a self-supporting substrate acting as a first electrode (10) and carrying a first organic semiconductive layer (12,22,24), a second self-supporting substrate acting as a second electrode (4,6) and carrying a second organic layer (8,28), and arranged between the first and second organic layers a layer of adhesive (20), wherein the first organic semiconductive layer is a light emitting layer and the second organic layer is a charge transport layer.
Claim 15
Independent Claim
95 words
A method of making a light emitting device comprising the laminating together of two self-supporting components (2,10), one of which provides a first charge injecting electrode (10) for the device and is formed by coating a first substrate (10) with an organic light emissive material (22) constituting a light emitting layer and a conducting polymer (28) constituting a charge transport layer, and the other of which provides a second charge injecting electrode (6) for the device, whereby the light emitting layer and the charge transport layer are located between the components in the finished device.
Claim 16
Independent Claim
95 words
A method of making a light emitting device comprising the laminating together of two self-supporting components (2,10), one of which provides a first charge injecting electrode (10) for the device and is formed by coating a first substrate (10) with an organic light emissive material (22) constituting a light emitting layer and a conducting polymer (28) constituting a charge transport layer, and the other of which provides a second charge injecting electrode (6) for the device, whereby the light emitting layer and the charge transport layer are located between the components in the finished device.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-10-11 | 2003-04-12 | 2003-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-10-11 | 2007-04-12 | 2007-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-10-11 | 2011-04-12 | 2011-10-12 | $7700.00 | Window Closed / Lapsed |