A substrate bonding method includes: providing a first and a second substrate; forming, on the first substrate, a first metal micro-bump array including first metal pillar(s) formed on the first substrate and first metal nanowires formed thereon and spaced apart from each other; forming, on the second substrate, a second metal micro-bump array including second metal pillar(s) formed on the second substrate and second metal nanowires formed thereon and spaced apart from each other; pressing the first substrate onto the second substrate, such that the first and second metal micro-bump arrays are positioned and staggered with each other, forming a physically interwoven interlocking structure between the first and second metal nanowires; applying a filling material between the first and second substrates; curing the filling material to form a bonding cavity; and then performing confined heating reflux on the first and second metal micro-bump arrays in the bonding cavity.

Methods and apparatuses for a attaching a first substrate to a second substrate are provided. In some embodiments, a first substrate has a protective layer, such as a solder mask, around a die attach area, at which a second substrate is attached. A keep-out region (e.g., an area between the second substrate and the protective layer) is a region around the second substrate in which the protective layer is not formed or removed. The keep-out region is sized such that a sufficient gap exists between the second substrate and the protective layer to place an underfill between the first substrate and the second substrate while reducing or preventing voids and while allowing traces in the keep-out region to be covered by the underfill.

Methods and apparatuses for a attaching a first substrate to a second substrate are provided. In some embodiments, a first substrate has a protective layer, such as a solder mask, around a die attach area, at which a second substrate is attached. A keep-out region (e.g., an area between the second substrate and the protective layer) is a region around the second substrate in which the protective layer is not formed or removed. The keep-out region is sized such that a sufficient gap exists between the second substrate and the protective layer to place an underfill between the first substrate and the second substrate while reducing or preventing voids and while allowing traces in the keep-out region to be covered by the underfill.

The present disclosure relates to a die comprising metal pillars extending from a surface of the die, the height of each pillar being substantially equal to or greater than 20 m, the pillars being intended to raise the die when fastening the die by means of a bonding material on a surface of a support. The metal pillars being inserted into the bonding material at which point the bonding material is annealed to be cured and hardened solidifying the bonding material to couple the die to the surface of the support.

The present disclosure relates to a die comprising metal pillars extending from a surface of the die, the height of each pillar being substantially equal to or greater than 20 m, the pillars being intended to raise the die when fastening the die by means of a bonding material on a surface of a support. The metal pillars being inserted into the bonding material at which point the bonding material is annealed to be cured and hardened solidifying the bonding material to couple the die to the surface of the support.

Package structure with folded die arrangements and methods of fabrication are described. In an embodiment, a package structure includes a first die and vertical interposer side-by-side. A second die is face down on an electrically connected with the vertical interposer, and a local interposer electrically connects the first die with the vertical interposer.

Embodiments disclosed herein include electronic packages. In an embodiment, the electronic package comprises a mold layer and a die embedded in the mold layer. In an embodiment the electronic package further comprises a solder resist with a first surface over the mold layer and a second surface opposite from the first surface. In an embodiment, the second surface comprises a first cavity into the solder resist.

Embodiments disclosed herein include electronic packages. In an embodiment, the electronic package comprises a mold layer and a die embedded in the mold layer. In an embodiment the electronic package further comprises a solder resist with a first surface over the mold layer and a second surface opposite from the first surface. In an embodiment, the second surface comprises a first cavity into the solder resist.

Embodiments disclosed herein include electronic packages. In an embodiment, the electronic package comprises a mold layer and a die embedded in the mold layer. In an embodiment the electronic package further comprises a solder resist with a first surface over the mold layer and a second surface opposite from the first surface. In an embodiment, the second surface comprises a first cavity into the solder resist.

Embodiments disclosed herein include electronic packages. In an embodiment, the electronic package comprises a mold layer and a die embedded in the mold layer. In an embodiment the electronic package further comprises a solder resist with a first surface over the mold layer and a second surface opposite from the first surface. In an embodiment, the second surface comprises a first cavity into the solder resist.