Method and system for stabilizing thin film transistors in AMOLED displays
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United States of America Patent
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Feb 22, 2005
Grant Date -
Mar 20, 2003
app pub date -
Sep 20, 2001
filing date -
Sep 20, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An active matrix OLED display includes current driving TFT transistors to provide current to corresponding OLEDs. The control signals to each TFT gate include a data signal that is proportional to the desired luminance output for the OLED and a reverse data signal that is used to reverse bias the TFT to prevent threshold drift in the TFT. The data signal alteration is preformed either at a frame rate or at a line rate.
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