Array substrate, display panel and display apparatus having the same, and fabricating method thereof

An array substrate, comprising:

• a first substrate;
• a first electrode on the first substrate;
• a passivation layer on a side of the first electrode distal to the first substrate, the array substrate comprising a plurality of first vias in the passivation layer, each of which corresponds to a different part of the first electrode;
• an electron emission source layer on a side of the first electrode distal to the first substrate comprising at least one electron emission source in each of the plurality of first vias;
• and
• a dielectric layer on a side of the first electrode distal to the first substrate comprising a plurality of dielectric blocks corresponding to the plurality of first vias, at least a portion of each of the plurality of dielectric blocks in each of the plurality of first vias;
• wherein the at least one electron emission source comprises a first portion having a first end and a second portion having a second end;
• the first end is in contact with the first electrode, the first portion is within a corresponding one of the plurality of dielectric blocks;
• the second portion and the second end are outside the corresponding one of the plurality of dielectric blocks;
• and
• the dielectric layer is made of a material consisting essentially of a resin.