It is an object to provide a display panel and an electronic book which are manufactured with high yield and have high reliability. A display panel is provided which includes, a flexible display portion in which a scan line and a signal line intersect with each other over a substrate, a signal line driver circuit for outputting a first signal to the signal line adjacent to a first side of the flexible display portion over the substrate, and a scan line driver circuit for outputting a second signal to the scan line adjacent to a second side of the flexible display portion. In the display panel, the mechanical strength of a portion provided with the signal line driver circuit or the scan line driver circuit is improved as compared to the mechanical strength of other than the portion.