A self-capacitance in-cell touch screen including a glass array substrate, thin film transistors disposed on the substrate, and pixel electrodes electrically connected with the thin film transistors, a planarizing layer between the pixel electrodes and the thin film transistors. The transparent touch control sensing electrode, a first insulation layer, a second insulation layer, and a metal connection line are disposed on the planarizing layer in sequence. The metal connection line is electrically connected to the touch control sensing electrode through via holes. The first insulation layer is between the planarizing layer and the pixel electrode, and the second insulation layer is located on the pixel electrode. The touch control sensing electrodes are common electrodes to transfer a common voltage and a touch scan signal by time-sharing during a period of displaying one frame image. A method of manufacturing self-capacitance in-cell touch screens and a liquid crystal displays is also disclosed.