Structure of thin film electroluminescent device

Details Structure of thin film electroluminescent device Structure of thin film electroluminescent device

1991-10-30

1994-10-04

Nold, Charles R.

Stock material or miscellaneous articles

Composite

Of inorganic material

428917, 313506, 313507, 313508, 313509, H05B 3314

Patent

active

053525434

ABSTRACT:
Disclosed is a thin film electroluminescent device of this invention comprising a transparent substrate, a transparent electrode, a fluorescent layer emitting a light when being charged with a certain voltage, a first and second insulating layer being laminated on the top and the bottom of the fluorescent layer to make a dopant be excited and emit a light efficiently, a first light absorbing layer being laminated on the second insulating layer to improve the function of contrast of the device of electroluminescence, a rear electrode formed on the first light absorbing layer at regular intervals, a rear insulating layer being laminated on the rear electrode to prevent the current from leaking from the rear electrode, and a second light absorbing layer being laminated on the rear insulating layer to blacken the etched portion of the first light absorbing layer. A method of fabrication is also disclosed.

REFERENCES:
patent: 5156924 (1992-10-01), Taniguchi et al.

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