Switching circuitry layout for an active matrix electroluminescent display pixel with each pixel provided with the transistors
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United States of America Patent
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Aug 15, 2000
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N/A
app pub date -
May 29, 1998
filing date -
Aug 24, 1994
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Abstract
In an active matrix electroluminescent display, a pixel containing a electroluminescent cell and the switching electronics for the electroluminescent cell where said switching electronics contains two transistors, a low voltage MOS transistor and a high voltage MOS transistor. A low voltage transistor is controlled by signals on a data and a select line. When activated, the low voltage transistor activates the high voltage transistor by charging the gate of the high voltage transistor. The gate charge is stored between the gate electrode of the high voltage transistor and an electric field shield forming a pixel signal capacitor. The pixel signal capacitor is positioned within the layout of the pixel a distance from the drain of the high voltage MOS transistor.
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