Organic light emitting display
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United States of America Patent
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Nov 3, 2009
Grant Date -
Jun 28, 2007
app pub date -
Nov 27, 2006
filing date -
Nov 28, 2005
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Abstract
A display having voltage-driven organic light-emitting pixel circuits. Each pixel circuit includes an organic light-emitting diode, a data writing circuit, a capacitor, three transistors, and a switch. The pixel circuit can compensate the threshold voltage variations of low temperature poly silicon thin film transistors. This increases the stability of the voltage-driven organic light-emitting pixel circuits, improves the uniformity of the luminance of the display, and provides a larger aperture ratio for the pixels.
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