The method of preparing an array substrate, a display panel, the display device

Example embodiments provide an array substrate and a preparation method of the present invention, a display panel, a display device, the problem relates to display technologies, and when the annealing process solves easily oxidized metal surface, to improve the product yield. The preparation method comprises forming a first conductive pattern, the second conductive pattern and an insulating pattern covers at least the upper surface of the first conductive pattern on a base substrate; a first conductive pattern, the second conductive pattern is formed using a patterning process; first the conductive pattern comprising: a first amorphous transparent conductive pattern, a first metal pattern; a second conductive pattern comprising a second amorphous transparent conductive pattern; annealing process, the amorphous transparent conductive pattern of the first, second amorphous state of the transparent conductive pattern are converted to pattern the first transparent conductive crystalline, crystalline second transparent conductive pattern. Preparation of the array substrate and comprising an array substrate for a display panel.