Patent ID: 11881468
Assignee: MICRON TECHNOLOGY, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 19:
20. A method for forming an anisotropic conductive film structure, the method comprising:
forming a precursor structure, comprising:
forming, on a sacrificial base material, a dielectric material;
defining discrete openings in the dielectric material;
forming a seed material in the discrete openings; and
forming a conductive carbon-based material on the seed material;

forming an other structure comprising an adhesive dielectric material on an other base material;
joining the precursor structure, on a surface thereof opposite the sacrificial base material, to the other structure;
removing the sacrificial base material;
removing the dielectric material to form additional openings; and
forming additional adhesive dielectric material in the additional openings to electrically insulate discrete conductive regions comprising the conductive carbon-based material and the seed material,, the method forming the anisotropic conductive film structure to comprise:
an array of the discrete conductive regions within a continuous region of at least one adhesive dielectric material comprising the adhesive dielectric material and the additional adhesive dielectric material, the discrete conductive regions of the array being mutually laterally spaced from one another by at least one predetermined pitch, at least some of the discrete conductive regions each comprising:
the conductive carbon-based material defining a void space therein; and
the seed material extending along vertical sidewalls of the conductive carbon-based material and along only one of an uppermost surface and a lowermost surface of the conductive carbon-based material.