A method for manufacturing an array substrate and an array substrate are disclosed. The method comprises the steps of forming a plurality of control electrodes on a baseplate, and forming a color-resist region between two adjacent control electrodes, wherein the color-resist region is a first color-resist region, a second color-resist region, a third color-resist region, and a fourth color-resist region in sequence; forming a first color-resist in the first color-resist region, forming a second color-resist in the second color-resist region, and forming a third color-resist in the third color-resist region; and coating the baseplate on which the control electrodes, the first color-resist, the second color-resist, and the third color-resist are formed and the fourth color-resist region with a transparent photoresist so as to form a flat layer. In the method according to the present disclosure, the production efficiency of the array substrate can be improved.