Liquid crystal display device and electronic device including the liquid crystal display device

A display device including a first display and a second display, each comprising:

• a transistor;
• a first insulating film over the transistor;
• a signal line over the first insulating film, the signal line being electrically connected to a first terminal of the transistor and supplying an image signal to the first terminal of the transistor;
• a second insulating film over the signal line;
• a pixel electrode over the second insulating film, the pixel electrode being electrically connected to a second terminal of the transistor;
• and
• a liquid crystal layer over the pixel electrode,
• wherein a channel forming region of the transistor includes an oxide semiconductor,
• wherein the oxide semiconductor comprises indium, gallium, and zinc,
• wherein a refresh operation of supplying the image signal to the pixel electrode is performed before a potential of the pixel electrode becomes 1% lower than an initial potential of the pixel electrode in a still image mode,
• wherein a specific resistance of a liquid crystal material in the liquid crystal layer measured at 20° C. is 1×1012 Ω·cm or more,
• wherein the first display comprises a first display part including the pixel electrode, a first side part and a second side part,
• wherein the second display comprises a second display part including the pixel electrode, a third side part, and a fourth side part,
• wherein the first display part is provided between the first side part and the second side part,
• wherein the second display part is provided between the third side part and the fourth side part, and
• wherein a connector is connected to the second side part and the third side part.