Method and device for driving an organic EL display device
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United States of America Patent
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-
Dec 26, 2006
Grant Date -
Nov 3, 2005
app pub date -
Apr 28, 2005
filing date -
Apr 28, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Although the driving voltage of an organic EL element is gradually reduced (gradually decreases) as an ambient temperature increases, a supply voltage V.sub.SEG, which is supplied to a data electrode driver, is controlled to so as to be kept at a higher value than the driving voltage of the organic EL element by about 6 V as a margin value for supply source in an intermediate temperature range (e.g., from 20 to 60.degree. C.). In a high temperature range, the supply voltage V.sub.SEG is decreased, according to temperature rise, in a higher degree as the gradual decrease in the supply voltage V.sub.SEG in the intermediate temperature range.
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