US3710167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organic electroluminescent cells having a tunnel injection cathode
Assignee: RCA Corp
•
Filing: 1970-07-02
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Granted: 1973-01-09
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Expires: 1990-07-02
Abstract
Abstract An electroluminescent cell comprises an anthracene layer having an anode and cathode thereon. The cathode of the novel cell is of the tunnel injection type. A typical cathode consists of a 10-100 A. thick layer of silicon dioxide deposited over a degenerate n type silicon body. The silicon dioxide layer of the cathode is placed in contact with the anthracence layer. The anode should provide hole injection into the anthracence layer. A preferred anode is a film of copper oxide and copper iodide.
Inventors
- 👤 J Dresner
- 👤 A Goodman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:26
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/22; H10; H10K; H10K50/00; H10K50/80; H10K50/805; H10K50/82
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
40 words
The electroluminescent cell recited in claim 1 wherein said organic phosphor composition comprises an organic compound having conjugated condensed benzene rings selected from the group consisting of anthracene, naphthalene, methyl derivatives of anthracene and anthracene doped with a fluorescent dye.
Claim 2
Dependent Claim
16 words
a layer of an organic phosphor over and in contact with said tunnel injection layer, and
Claim 3
Dependent Claim
11 words
a layer of an organic phosphor over said tunnel-injection layer and,
Claim 4
Dependent Claim
19 words
a light transmitting anode strucTure over and in contact with said phosphor layer and spaced from said cathode structure.
Claim 5
Dependent Claim
19 words
a light transmitting anode structure over and in contact with said phosphor layer and spaced from said cathode structure.
Claim 6
Dependent Claim
24 words
The electroluminescent cell recited in claim 1 wherein said organic phosphor has an electron trap density in the order of 1014 traps/cc. or less.
Claim 7
Dependent Claim
24 words
The electroluminescent cell recited in claim 1 wherein said phosphor layer consists of phosphor grains which are monocrystalline in the direction of current flow.
Claim 8
Dependent Claim
17 words
The electroluminescent cell recited in claim 1 wherein said dielectric has dielectric constant of less than 5.
Claim 9
Dependent Claim
29 words
The electroluminescent cell recited in claim 1 wherein said electrode material is n-type degenerate silicon and wherein said dielectric layer is SiO2 having a thickness of from 10-100 A.
Claim 10
Dependent Claim
51 words
The electroluminescent cell recited in claim 1 wherein said anode comprises a member selected from the group consisting of a tin oxide, indium oxide, a mixture of cuprous oxide and cuprous iodide, gold, platinum, a selenium-tellurium alloy and p type silicon having a 10-100 A. thick layer of silicon dioxide thereon.
Claim 11
Dependent Claim
56 words
The electroluminescent cell recited in claim 1 wherein said anode comprises a transparent film selected from a member of the group consisting of a mixture of copper oxide and copper iodide, tin oxide and indium oxide, said film having a transparent film of tellurium thereover, said tellurium film being no more than several atomic layers thick.
Claim 12
Dependent Claim
14 words
The electroluminescent cell recited in claim 1 wherein said anode has a mesh-like configuration.
Claim 13
Dependent Claim
17 words
A cell according to claim 1 wherein said phosphor layer is less than 10 micrometers in thickness.
Claim 14
Dependent Claim
12 words
A cell according to claim 1 wherein said phosphor layer contains anthracene.
Claim 15
Dependent Claim
37 words
A cell according to claim 1 wherein said cathode is spaced from said anode by an additional thickness of the dielectric layer around the periphery of said cell, which thickness defines the thickness of said phosphor layer.
Claim 16
Dependent Claim
17 words
A cell according to claim 12 wherein said peripheral dielectric thickness is from 1 to 10 micrometers.
Claim 17
Dependent Claim
4 words
An electroluminescent devise comprising:
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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) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |