| 摘要 |
A display device drive device includes a signal processing section ( 20 ) for correcting an input digital image signal and outputting a digital corrected signal, an analog signal output section ( 30 ) for outputting an analog image signal to a plurality of image output terminals ( 1 ), a signal switching selection ( 40 ) for successively selecting an analog image signal from the analog signal output section ( 30 ), and a delta/sigma modulator ( 9 ) for delta/sigma-modulating the analog image signal selected by the signal switching section ( 40 ) and feedback-inputs the created 1-bit digital modulated signal to the signal processing section ( 20 ). The signal processing section ( 20 ) successively outputs initial output data V<SUB>init0 </SUB>to V<SUB>initm </SUB>to the analog signal output section ( 30 ), receives a modulated signal for the initial output data V<SUB>init0 </SUB>to V<SUB>initm </SUB>from the delta/sigma modulator ( 9 ) so as to calculate correction data. Thus, even if irregularities are caused in the non-linear electric characteristic between output terminals in the display drive LSI of ultra-multi-pin output, it is possible to sufficiently correct them with a high accuracy.
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