Organic electroluminescent display device having luminance degradation compensating function
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United States of America Patent
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Jan 8, 2002
Grant Date -
N/A
app pub date -
Aug 4, 2000
filing date -
Sep 17, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In an electroluminescent (EL) display device having a plurality of organic EL elements, variations in luminance among the EL elements are equalized. EL elements to be driven for a required image display are periodically applied with drive voltages and a recovery voltage, while the other EL elements are periodically applied with a dummy voltage. The period, the repetition period, and the amplitude of the dummy voltage are set not to illuminate the other EL elements, while promoting degradation of the other EL elements to some extent. Alternatively, the drive voltage applied to drive the EL elements for the required image display may be modified in accordance with the degree of degradation thereof.
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