Addressable electroluminescent display panel having a substantia

Details Addressable electroluminescent display panel having a substantia Addressable electroluminescent display panel having a substantia

1996-03-11

1998-05-26

O'Shea, Sandra L.

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

313510, 3151693, H01J 152

Patent

active

057571287

ABSTRACT:
The present invention is directed to an addressable electroluminescent display which can minimize and in some cases eliminate ghost images resulting from leads used to energize the display. The addressable display has a polymer film substrate with a first electrode deposited onto the polymer film. A group electrode is provided which is spaced apart from the first electrode. The group electrode has segments so arranged that, when projected onto the first electrode, the segments form a substantially continuous group electrode footprint. A phosphor layer is interposed between the first electrode and the group electrode. Preferably, a dielectric layer is also interposed between the phosphor layer and the group electrode. A group electrode insulating layer overlies the group electrode and has group electrode lead passages therethrough. Group electrode leads overlay the group electrode insulating layer and are positioned such that their projection onto the first electrode lies within the group electrode footprint. The group electrode leads pass through the group electrode lead passages to connect with the group electrode. In a preferred embodiment, the group electrode has co-planar segments which provide the substantially continuous group electrode footprint.

REFERENCES:
patent: 3219865 (1965-11-01), Vodicka
patent: 3225253 (1965-12-01), Narken et al.
patent: 3544990 (1970-12-01), MacIntyre
patent: 4665342 (1987-05-01), Topp et al.
patent: 4752717 (1988-06-01), Mental
patent: 5266865 (1993-11-01), Haizumi
patent: 5504390 (1996-04-01), Top

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