The present invention provides an array substrate, a method of manufacturing the same and an In Cell touch control display panel. The array substrate of the present invention, by sequentially forming the first flat layer, the touch control signal layer, the second flat layer, the common electrode, the passivation layer, and pixel electrode on the source/drain electrode, the data line and the third insulating layer, such an architecture of which makes the touch control signal layer located under the second flat layer, would not be present in a manner that a region of a surface of the array substrate corresponding to the touch control signal layer forms protrusion, and a surface of said array substrate gets flatter so as to prevent the spacer from sliding to cause a manner of liquid crystal cell collapsing or alignment film scratching, promoting display quality; simultaneously, and makes three passivation layers of the conventional array substrate reduced into one passivation layer, and thereby simplifies manufacturing process, lower manufacturing process cost. In the manufacturing method of the array substrate of the present invention, the manufactured array substrate has a flatter surface, and a simplified manufacturing process, manufacturing process cost. The In Cell touch control display panel of the present invention has a great display quality, and a lower production cost, simultaneously.