Multicolored electric field light emitting device with protruded

Active solid-state devices (e.g. – transistors – solid-state diode – Responsive to non-electrical signal – Electromagnetic or particle radiation

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257 88, 257 89, 257 93, 257 99, H01L 2714, H01L 3100, H01L 310224, H01L 3118

Patent

active

053940040

ABSTRACT:
A semiconductor device and a method of making the same capable of simplifying the process of making and reducing the cost of making. In the method a first layer is formed which has a plurality of conductors at its edge portion. Thereafter, a second layer is formed on the first layer which is to be selectively etched to form a pattern. During the etching, current is detected from the conductors and the etching is stopped dependent on the current detected from the conductors. The semiconductor device includes a transparent electrode on a substrate the transparent electrode having protrusions which have a top surface. A first insulation layer exists between the protrusions. There is a color emitting layer on the top surfaces of the protrusions and the insulation layer.

REFERENCES:
"Thin Film Electroluminescent Phosphors for Patterned Full-Color Displays" (Springer proceedings in physics, vol. 38) 1989, pp. 132-138.

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