Liquid crystal display device, portable electronic device and driving method thereof

摘要

A display device which is provided with a liquid crystal display which uses reflective type liquid crystal with a memory effect. This display device is used, for example, as a sub display of a personal computer. The liquid crystal display keeps displaying an image after supply of electric power thereto is stopped. When a specified time has passed since completion of writing, supply of electric power at least to a driving section of the liquid crystal display is stopped.