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AssigneeDurel Corporation
InventorsRodney T. Eckersley, Will M. Hooke, Sharlyn R. Stocker, Ralph McGuigan
Estimating the term…
An electroluminescent sheet-form lamp with a main portion of a conductive layer isolated from an edge region susceptible to detrimental conductive pathways by isolation provided along at least a portion of the perimeter of the lamp as a result of removal of a preapplied conductive coating such that, at the region of the isolation, the main portion of the one conductive layer which forms the respective electrode commences at a line spaced inwardly from the outer edge of the lamp. The preapplied conductive coating material may be removed to form a line of interruption that leaves in place a narrow margin of conductive coating in the edge region which is electrically isolated from the main portion of the coating forming the first electrode. The lamp may be formed by exposing preselected portions of the preapplied conductive coating to laser radiation sufficient to remove the preselected portions and form the region of isolation. A scribing technique or a mask, which may be a printed functional layer of the lamp, are employed.
In an electroluminescent sheet-form lamp comprising a transparent insulation layer, a transparent first conductive layer below said transparent insulation layer forming a first electrode, a layer of phosphor material below said transparent first conductive layer, a layer of dielectric material below said phosphor layer, a second conductive layer below said dielectric layer forming a second electrode, and electrical connection means for applying an electrical potential between the conductive layers to cause the phosphor to transmit light through the transparent first conductive layer and said transparent insulation layer, one of said conductive layers having been formed as a general conductive coating preapplied over a panel of larger dimension than said lamp, from which said lamp has been cut,
In an electroluminescent sheet-form lamp comprising a transparent substrate layer, and, in successive relationship, a transparent first conductive layer forming a first electrode, a layer of phosphor material comprising encapsulated phosphor particles, a layer of dielectric material, a second conductive layer forming a second electrode, and electrical connection means for applying an electrical potential between the conductive layers to cause the phosphor to transmit light through the transparent conductive layer and said transparent substrate, said first transparent conductive layer comprising a preapplied continuous transparent coating over said substrate, outer edges of said layers defining said lamp being exposed to the ambient environment and being susceptible to formation of a detrimental conductive path,
Dependencies are inferred from the claim text.