The utility model discloses a fan-out type
wafer level packaging unit, which comprises a carrier plate, a bare
crystal, a first
dielectric layer, a second
dielectric layer, a plurality of conducting lines and an outer protective layer, the bare
crystal is provided with a first surface and a second surface opposite to the first surface, the first surface is fixedly arranged on the carrier plate, the second surface is provided with a plurality of
crystal pads, a vertical
chip area of the second surface is defined as a
chip area, and the
chip area is provided with a plurality of chip pads. Each conductive connection line is composed of
metal paste filled in a plurality of first grooves of the first
dielectric layer and a plurality of second grooves of the second
dielectric layer, one end of each conductive connection line is electrically connected with a plurality of crystal pads of a bare crystal, and the other end of each conductive connection line forms a
welding pad in a plurality of openings of the outer protective layer and is exposed. Wherein at least one bonding pad is located around the chip area of the second surface of the die; wherein the bare crystal is electrically connected with the outside through the crystal pads, the conducting circuits and the
welding pads, so that the problems that the manufacturing cost is high and
environmental protection is not facilitated when the conducting circuits are manufactured by the existing fan-out packaging technology are effectively solved.