Electroluminescent lamp with controlled field intensity for disp

Details Electroluminescent lamp with controlled field intensity for disp Electroluminescent lamp with controlled field intensity for disp

1995-08-16

1997-08-26

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

With assembly or disassembly

427 66, H01J 170

Patent

active

056605730

ABSTRACT:
An EL lamp includes a transparent electrode, an electroluminescent dielectric layer overlying the transparent electrode, a patterned insulating layer overlies selected portions of the dielectric layer for reducing the electric field across the selected portions of the electroluminescent dielectric layer, and a rear electrode overlying the insulating layer and the electroluminescent dielectric layer. The insulating layer is preferably a low dielectric constant material and can overlie the electroluminescent dielectric layer or can be located between a separate dielectric layer and a phosphor layer. A gray scale is produced by depositing or printing more than one thickness of insulating layer.

REFERENCES:
patent: 2919366 (1959-12-01), Mash

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