| 摘要 |
PURPOSE: A driving circuit of a light emitting diode is provided to finely set the brightness of the light emitting diode regardless of the increase of a memory capacity. CONSTITUTION: Index data memory devices(50, 52) memorize index data for each light emitting diode unit. The index data designates the storage unit of grayscale data related to the brightness of the light emitting diode unit. A grayscale data memory unit(51) memorizes the grayscale data by corresponding to the index data. A driving circuit drives the light emitting diode unit based on the grayscale data and emitting light based on the brightness of the grayscale data.
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