Electroluminescent lamps and displays having thick film and mean

Details Electroluminescent lamps and displays having thick film and mean Electroluminescent lamps and displays having thick film and mean

1994-01-31

1995-04-25

Yusko, Donald J.

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

313506, 313498, 313 50, 313511, 313502, 313505, 313493, 3151694, 359 88, 445 24, 445 50, H01J 162

Patent

active

054102170

ABSTRACT:
Improved thick film electroluminescent lamps and displays which provide a moisture barrier for the phosphor layer of an electroluminescent lamp and allows all of the contacts for the lamp or the display to reside within the footprint of the lamp. The moisture barrier is provided without employing a pair of encapsulating polymer sheets. The resulting lamps and displays are provided with vias which allow leads to be attached to a front electrode and one or more back electrodes employed to provide a potential across a phosphor layer therebetween causing the phosphor to emit light. A second dielectric layer is deposited over the underlying architecture of the lamp or display and forms a seal with an exposed continuous band of a phosphor free front electrode which surrounds the perimeter of the lamp and also seals with a phosphor free region at the bottom of the vias which it passes down. The dielectric layer also seals any passages provided which traverse the lamp or display.

REFERENCES:
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patent: 3254254 (1966-05-01), Buck
patent: 3281619 (1966-10-01), Greene
patent: 3330982 (1967-07-01), Dickson, Jr.
patent: 4482580 (1984-11-01), Emmett et al.
patent: 4743801 (1988-05-01), Yokoyama et al.
patent: 4775964 (1988-10-01), Alessio et al.
patent: 5045755 (1991-09-01), Appelberg
patent: 5120618 (1992-06-01), Mori et al.
patent: 5184969 (1993-02-01), Sharpless et al.

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