Pixel structure and manufacturing method thereof and display panel

A manufacturing method of a pixel structure, comprising:

• forming an electrode material layer, a shielding material layer, an inter-layer dielectric material layer, a semiconductor material layer and a first photoresist-layer sequentially on a substrate;
• patterning the semiconductor material layer, the inter-layer dielectric material layer, the shielding material layer and the electrode material layer by using the first photoresist-layer as a mask to form a semiconductor pattern, an inter-layer dielectric pattern, a shielding pattern and a pixel electrode;
• forming a source/drain on the pixel electrode, wherein the source/drain is electrically connected to the pixel electrode and covers a portion of the semiconductor pattern, and a channel is another portion of the semiconductor pattern uncovered by the source/drain;
• and
• forming a dielectric layer and a gate on the substrate, wherein the dielectric layer covers the source/drain, the semiconductor pattern, the inter-layer dielectric pattern, the shielding pattern and the pixel electrode, and the gate is disposed on the dielectric layer above the channel.