Manufacturing method of display panel

A manufacturing method of a display panel, comprising:

• providing a substrate having a first surface and a second surface opposite to the first surface;
• forming a light-shielding positioning layer on the first surface, wherein the light-shielding positioning layer has at least one first alignment pattern;
• forming a transparent material layer on the second surface;
• forming a photoresist layer on the transparent material layer;
• performing an exposure process, such that a light beam passes through the at least one first alignment pattern to penetrate through the substrate and the transparent material layer to the photoresist layer;
• performing a developing process to pattern the photoresist layer and form a patterned photoresist layer;
• and
• performing an etching process to pattern the transparent material layer using the patterned photoresist layer as a mask to form a transparent positioning layer having at least one second alignment pattern,
• wherein in a direction perpendicular to the substrate, the at least one first alignment pattern overlaps with the at least one second alignment pattern.