A method for manufacturing a liquid crystal display, the method includes steps of depositing a transparent conductive layer, forming a pixel electrode, and four bottom layers, depositing a semiconductor insulation layer on the pixel electrode and the four bottom layers, defining the semiconductor insulation layer to form two contact openings two of the bottom layers, depositing and defining two top layers and two scanning lines both with an indentation at an edge thereof, and the indentations face the first pixel electrode by an opposite direction, and forming four metal-insulation-metal (MIM) diodes.