Organic electroluminescent device with stabilizing fused metal p

Details Organic electroluminescent device with stabilizing fused metal p Organic electroluminescent device with stabilizing fused metal p

1990-07-26

1991-12-17

Seidleck, James J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

313503, 313504, 428330, 428690, 428917, H01J 162

Patent

active

050734466

ABSTRACT:
An organic electroluminescent device is disclosed which is protected from dark spot formation. The device is comprised of, in sequence, a support, an anode, an organic electroluminescent medium, and a cathode. The cathode is comprised of an electron injecting layer contacting the organic electroluminescent medium containing a plurality of metals at least one of which has a work function of less than that of indium. The cathode is comprised of a layer of fused metal particles containing at least 80 percent of indium and having a mean diameter of less the 1 .mu.m and a coefficient of variation of less than 20 percent.

REFERENCES:
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patent: 3621321 (1971-11-01), Williams
patent: 4356429 (1982-10-01), Tang
patent: 4539507 (1985-09-01), Van Slyke et al.
patent: 4720432 (1988-01-01), Van Slyke et al.
patent: 4769292 (1988-09-01), Tang et al.
patent: 4885211 (1989-12-01), Tang et al.

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