Abstract: A display panel includes a first substrate and a second substrate which are arranged opposed to each other. The space between the first substrate and the second substrate is separated into a plurality of sub-pixel regions. Within each sub pixel region, a first electrode, a first fluid layer, a second fluid layer, a hydrophobic dielectric layer and a second electrode are arranged in this order. The first fluid layer is made of hydrophilic liquid. The second fluid layer is made of ink. When no electric field is applied between the first electrode and the second electrode, the ink spreads over the surface of the hydrophobic dielectric layer. When an electric field is applied between the first electrode and the second electrode, the ink aggregates to expose the hydrophobic dielectric layer.

Abstract: An array substrate and a fabrication method thereof, and a display device are provided. The array substrate comprises: a thin film transistor (TFT 10) provided on a base substrate (01), a first passivation layer (200) provided on the thin film transistor (TFT 10), and a transparent electrode layer (300) provided on a surface of the first passivation layer (200). The first passivation layer (300) includes: a first sub-thin film layer (210), and a second sub-thin film layer (211) which is provided on a surface of the first sub-thin film layer (210) and in contact with the transparent electrode layer (300); and a film density of the second sub-thin film layer (211) is greater than that of the first sub-thin film layer (210).