| 摘要 |
PROBLEM TO BE SOLVED: To eliminate the dead band in a driving voltage of a light emitting element and to suppress adverse effect on the driving voltage caused by external fluctuation. SOLUTION: A circuit is provided that receives gradation data indicating gradation causing the light emitting element to emit light and generates a driving voltage V<SB>DRV</SB>equal to or higher than a reference potential ( a ground potential) when the gradation indicated by the gradation data is equal to or greater than a prescribed threshold value and that generates a driving voltage lower than the reference potential (the ground potential) when the gradation indicated by the gradation data is less than the threshold value. Moreover, a dead band eliminating circuit is provided to eliminate the dead band of the driving voltage V<SB>DRV</SB>. Thereby the driving voltage V<SB>DRV</SB>having the voltage value corresponding to the gradation which causes the light emitting element to emit light is generated and the driving voltage V<SB>DRV</SB>is supplied to the light emitting element, thus the light emitting element emits the light. COPYRIGHT: (C)2006,JPO&NCIPI
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