An array substrate, a display panel and a display device. The array substrate includes: a substrate; a plurality of scan lines and a plurality of data lines disposed on the substrate; a plurality of sub-pixels arranged in an array, which are defined by the data lines and the scan lines insulatedly intersecting the data lines; a plurality of touch sensing electrodes disposed in an array, each of which corresponds to one pixel region comprising a plurality of first sub-pixels and at least one second sub-pixel; and a plurality of first signal lines extending along a first direction, wherein, an area of a second sub-pixel electrode in the second sub-pixel is smaller than that of a first sub-pixel electrode in the first sub-pixel, and the first inactive display region is provided in the second sub-pixel.