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US 4,356,429 AGranted
Organic electroluminescent cell
AssigneeEastman Kodak Company
InventorChing W. Tang
Life of this patent
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Abstract
An organic electroluminescent cell is disclosed comprising a luminescent zone between two electrodes, wherein a hole-injecting zone comprising a porphyrinic compound is disposed between the luminescent zone and the anode electrode.
Claims5
In an electroluminescent cell including an anode electrode, a cathode electrode, and a luminescent zone between said electrodes comprising an organic luminescent agent and a binder having a breakdown field strength of at least about 10.sup.5 volt/cm,
- the improvement comprising, between said luminescent zone and said anode electrode, a hole-injecting zone comprising a layer of a porphyrinic compound.
Dependencies are inferred from the claim text.