Dual substrate full color TFEL panel with insulator bridge structure
First Claim
1. In a TFEL display device comprising a laminar electroluminescent stack sandwiched between first and second electrode arrays, an electrode structure for said first one of said arrays comprising:
- (a) a plurality of elongate insulator bridges forming rows extending across said laminar stack substantially in parallel;
(b) a plurality of pixel pads of conductive material deposited on each row of insulator bridges and extending laterally from said bridges onto areas of said laminar stack; and
(c) a plurality of bus bars connecting the thin pixel pads in each row and extending along said insulator bridges.
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Accused Products
Abstract
A full color TFEL display includes stacked panels emitting blue and a combination of red and green light. The panel nearest the viewer employs transparent electrodes on both sides and an insulator bridge structure for the scanning electrodes that alleviates the effect of pinhole defects. The panel farthest from the viewer employs transparent-top electrodes. Each row electrode on the scanning side includes an insulator bridge extending across the panel and then ITO pads extending laterally of the bridge onto the EL stack to form sub pixel points. A bus bar connects all the pixel pads in a row and provides the scanning voltage. The insulator bridge prevents the bus bars from shorting out and permits the pixel pads to fuse open in the event of a short circuit.
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Citations
12 Claims
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1. In a TFEL display device comprising a laminar electroluminescent stack sandwiched between first and second electrode arrays, an electrode structure for said first one of said arrays comprising:
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(a) a plurality of elongate insulator bridges forming rows extending across said laminar stack substantially in parallel; (b) a plurality of pixel pads of conductive material deposited on each row of insulator bridges and extending laterally from said bridges onto areas of said laminar stack; and (c) a plurality of bus bars connecting the thin pixel pads in each row and extending along said insulator bridges. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A dual substrate full color TFEL display panel comprising:
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(a) a first independently addressable electroluminescent device emitting light of a first color; and (b) a second independently addressable electroluminescent device including first and second electrode arrays, said second electroluminescent device comprising an EL stack emitting light of second and third colors, wherein said first electrode array comprises elongate electrode members coupled to pixel pads of a transparent electrically conducting material extending laterally of said members and coextensive with said second electrode array to form pixel points of alternating second and third colors. - View Dependent Claims (9, 10, 11, 12)
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Specification