| 摘要 |
An image display device of this invention includes image memory (3) which is constructed of SRAM and which does not need any refreshing operation, image memory (3) being composed of MSB division memory (13) for storing MSB data of each pixel data item and lower-order bit division memory (14) for storing lower-order bit data other than the MSB data. In a normal mode MSB division memory (13) and lower-order bit division memory (14) are driven to cause the MSB data and the lower-order bit data to be read/written, whereas in an electric power saving mode only MSB division memory (13) is driven with lower-order bit division memory (14) remaining undriven to cause the MSB data to be read/written.
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