Power Slide Window

To provide a power slide window in which the projecting dimension of the guide rail from the panel surface is small, the guide rail () defines a pin guide groove () that includes a groove main portion (a) extending along a panel surface (b) and at least one groove extension portion (b) configured to drive a slide panel () in a direction to approach the window glass pane () via a pin () when the slide panel reaches the vicinity of the closed position. A slider guide groove () provided in the guide rail to allow sliding of the slider which is slidingly driven in the opening and closing direction and a groove main portion (a) of a pin guide groove () are formed at least partially in common with each other.