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US 5,686,792 AGranted
EL lamp with non-luminous interconnects
OwnerThomas C. Ensign, Jr.inventor
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Abstract
An electroluminescent lamp includes a continuous electroluminescent dielectric layer and a patterned rear electrode overlying the electroluminescent dielectric layer, wherein the rear electrode includes at least two conductive segments separated by a gap. An insulating layer fills the gap and a conductive interconnect overlies the insulating layer, joining the segments. The insulating layer spaces the interconnect from the electroluminescent dielectric layer a sufficient distance to reduce the electric field in the electroluminescent dielectric layer below the point at which the lamp appears luminous.
Claims4
An electroluminescent lamp comprising:
- a transparent first electrode;
- a second electrode having a predetermined thickness;
- an electroluminescent dielectric layer between said first electrode and said second electrode;
- wherein said second electrode is divided into at least two segments separated by a gap at which said lamp is not luminous when lit;
- an insulating layer in said gap;
- a conductive interconnect overlying a portion of said insulating layer between said segments;
- whereby the electroluminescent dielectric layer is luminous at said segments when a voltage is applied across said first electrode and said second electrode but is not luminous at said interconnect when a voltage is applied across said first electrode and said second electrode.
4 more elements
Dependencies are inferred from the claim text.