Large area EL lamp
The unlit margin of a first EL lamp is covered by the lit edge of a second EL lamp to provide a substantially seamless lit area. The lamps are joined mechanically. The EL lamps are connected in parallel electrically by conductive tape overlying at least a portion of the bus bars of the lamps. A plurality of lamps can be joined together to provide an EL lamp substantially larger than obtainable by other means.
1. An EL panel comprising: at least two EL lamps, a first of said lamps having an unlit margin along one edge thereof and a second of said lamps having a lit area extending to an edge of said second lamp; wherein the lit edge of the second lamp overlaps the unlit margin of the first lamp and is mechanically joined to the first EL lamp along the unlit margin; said EL lamps each including at least two bus bars intersecting the margin and said panel further including conductive tape electrically connecting said EL lamps in parallel across the intersections at the margin; whereby said first EL lamp and said second EL lamp provide a substantially seamless luminous area in said panel.
2. The EL panel as set forth in claim 1 wherein the conductive tape extends continuously across the backs of said at least two lamps.