High contrast TFEL display in which light from the transparent p

Details High contrast TFEL display in which light from the transparent p High contrast TFEL display in which light from the transparent p

1995-06-12

1997-01-21

Gross, Anita Pellman

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

313506, 313509, H01J 162, H01J 6304

Patent

active

055962467

ABSTRACT:
A display system (25) includes an enhanced specularity multi-layer thin film electroluminescent (TFEL) panel (26) and circular polarizer filter (27) which combine to provide a high contrast TFEL display. The enhanced specularity is obtained by increasing the rate the phosphor layer of the panel is deposited which results in a smoother, more specular surface. The increased specularity of the panel (26) provides a darker display background, and therefore higher contrast.

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Marvin F. Higgins, "High-Quality Electroluminescent Display for a Personal Workstation", Hewlett-Packard Journal, Oct. 1985.
Gregory, O. J., Zeto, R. J., Hydkowian, E., Burbank, K. A.; "Fabrication of High-Conductivity, Transparent Electrodes With Trenched Metal Bus Lines", J. Electrochem. Soc., vol. 138, No. 7, Jul. 1991; pp. 2070-2075.
Tiku, S. K., "High-Contrast Dark-Field TFEL Display"; Proceedings of the SID, vol. 31/1, 1990; pp. 37-40.
Dobrowolski, J. A., Sullivan, B. T., Bajcar, R. C.; "Optical Interference, Contrast-Enhanced electroluminescent Device"; Applied Optics, vol. 31, No. 28, 1 Oct. 1992.

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