Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Patent
1994-03-03
1996-04-02
O'Shea, Sandra L.
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
313506, 313510, 313494, 313331, 3151693, H01J 162, G09G 312
Patent
active
055043909
ABSTRACT:
The present invention is directed to an addressable electroluminescent display which eliminates 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, form a substantially continuous group electrode footprint. A phosphor layer is interposed between the first electrode and the group electrode. Preferably, a dielectric is also interposed between the phosphor layer and the group electrode. A group electrode insulating layer overlies the group electrode and has group electrode insulating layer 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 insulating layer passages connecting with the group electrode. In a preferred embodiment, the group electrode has co-planar segments which provide the substantially continuous group electrode footprint.
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Esserman Matthew J.
O'Shea Sandra L.
Weins Michael J.
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