| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a self-luminous display device the power consumption of which is reduced and which is capable of long-term use in a dark place. <P>SOLUTION: A circuit is formed using a thin film transistor in which a highly-purified oxide semiconductor is used and a pixel can keep a certain state (a state in which a video signal has been written). As a result, even in the case of displaying a still image, stable operation is easily performed. In addition, an operation interval of a driver circuit can be extended, which results in a reduction in power consumption of a display device. Moreover, a light-storing material is used in a pixel portion of the self-luminous display device to store light of a light-emitting element, whereby the display device can be used in a dark place for a long time. <P>COPYRIGHT: (C)2011,JPO&INPIT |
