DISPLAY DEVICE DRIVING CIRCUIT AND DISPLAY DEVICE DRIVING METHOD

PROBLEM TO BE SOLVED: To suppress EMI occurrence.SOLUTION: A display device drive circuit includes: an amplifier output control circuit 101 which generates first to third output control signals C1-C3 to be output in first to third output timings based upon a timing signal STB; first amplifier circui...

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Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To suppress EMI occurrence.SOLUTION: A display device drive circuit includes: an amplifier output control circuit 101 which generates first to third output control signals C1-C3 to be output in first to third output timings based upon a timing signal STB; first amplifier circuits AC11-AC1n which output gradation voltages based upon the first output control signal C1; second amplifier circuits AC21-AC2n which output gradation voltages based upon the second output control signal C2; and third amplifier circuits AC31-AC3n which output gradation voltages based upon the third output control signal C3. Denoting a time interval between the first and second successive output timings as a first interval TI1, a time interval between the second and third successive output timings as a second interval TI2, and a reciprocal of a frequency as a control object of EMI of the EMC standard as a period T, the greatest common divisor of the first interval TI1 and the second interval TI2 is smaller than a minimum value of the period T.