Electro-luminescent display including a current mirror
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United States of America Patent
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Jun 17, 2003
Grant Date -
N/A
app pub date -
Mar 9, 2000
filing date -
Jun 3, 1999
priority date (Note) -
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Abstract
An electro-luminescent display includes a current mirror for supplying uniform drive currents to the electro-luminescent diodes of the electro-luminescent display. The current mirror is not effected by the various threshold voltages V.sub.TH of the switching devices in the electro-luminescent display so that uniform current is output to the electro-luminescent diodes throughout the display. The electro-luminescent display includes a gate line, a data line intersecting the gate line, a first TFT for selecting an arbitrary pixel by a gate signal from the gate line, wherein a gate of the first TFT is connected to the gate line, and a current mirror for outputting a signal to an arbitrary pixel selected by the first TFT by receiving a data signal from the data line at the same time the current mirror is being driven by applied voltage. The current mirror includes a second TFT and a third TFT, and an electro-luminescent diode driven by the signal output from the current mirror.
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