Electro-optical device having an anodic oxide film
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United States of America Patent
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Oct 31, 1995
Grant Date -
N/A
app pub date -
Mar 30, 1993
filing date -
Apr 1, 1992
priority date (Note) -
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Abstract
In an electro-optical device such as an active matrix liquid crystal display, an aluminum gate wiring or a wiring equivalent thereto is used as one electrode of an auxiliary capacitor, a pixel electrode is used as the other electrode, and an oxide film having high dielectric constant which is obtained by subjecting the gate wiring or the wiring equivalent thereto to an anode-oxidation treatment is used as a dielectric material of the capacitor, thereby obtaining an auxiliary (additive) capacitor having large breakdown voltage and large capacitance for stabilizing potential of the pixel electrode.
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