Abstract:
A 3D interconnect structure and method of manufacture are described in which metal redistribution layers (RDLs) are integrated with through- silicon vias (TSVs) and using a single damascene type process flow. A silicon nitride or silicon carbide passivation layer may be provided between the thinned device wafer back side and the RDLs to provide a hermetic barrier and polish stop layer during the process flow.
Abstract:
An interconnect structure for a microelectronic device includes an electrically conductive material (130, 730, 930) adjacent to a metallization layer (120, 320, 920). The electrically conductive material has a base (131, 931) and a body (132, 932). The base is wider than the body. The base and the body form a single monolithic structure having no internal interface. The interconnect structure may be manufactured by providing a substrate (110, 310, 910) to which the metallization layer is applied, forming a sacrificial layer (410) adjacent to the metallization layer and a resist layer (510) adjacent to the sacrificial layer, patterning the resist layer to form an opening (610) (thereby removing a portion of the sacrificial layer), placing the electrically conductive material in the opening, and removing the resist layer, the sacrificial layer, and a portion of the metallization layer.
Abstract:
Techniques are disclosed for forming a logic device including integrated spin-transfer torque magnetoresistive random-access memory (STT-MRAM). In accordance with some embodiments, one or more magnetic tunnel junction (MTJ) devices may be formed within a given back-end-of-line (BEOL) interconnect layer of a host logic device. A given MTJ device may be formed, in accordance with some embodiments, over an electrically conductive layer configured to serve as a pedestal layer for the MTJ's constituent magnetic and insulator layers. In accordance with some embodiments, one or more conformal spacer layers may be formed over sidewalls of a given MTJ device and attendant pedestal layer, providing protection from oxidation and corrosion. A given MTJ device may be electrically coupled with an underlying interconnect or other electrically conductive feature, for example, by another intervening electrically conductive layer configured to serve as a thin via, in accordance with some embodiments.
Abstract:
Approaches for integrating spin torque transfer magnetic random access memory (STT-MRAM) memory arrays into a logic processor, and the resulting structures, are described. In an example, a logic processor including a logic region including metal line/via pairings disposed in a dielectric layer disposed above a substrate. The logic processor also includes a spin torque transfer magnetoresistive random access memory (STT-MRAM) array including a plurality of magnetic tunnel junctions (MTJs). The MTJs are disposed in the dielectric layer.
Abstract:
Described is an apparatus which comprises: non-orthogonal transistor fins which are non-orthogonal to transistor gates; diffusion contacts with non-right angled sides, the diffusion contacts coupled to the non-orthogonal transistor fins; first vias; and at least one memory element coupled to at least one of the diffusion contacts through at least one of the first vias.
Abstract:
An embodiment includes an apparatus comprising: a first semiconductor fin parallel to a second semiconductor fin; a first source line oblique to the first and second fins; a first contact coupling a first drain node of the first fin to a first magnetic tunnel junction (MTJ) and a second contact coupling a second drain node of the second fin to a second MTJ; wherein (a) a first vertical axis intersects the first fin and the first source line and a second vertical axis intersects the second fin and the first source line; and (b) the first contact includes sidewalls parallel to the first fin and additional sidewalls orthogonal to the first source line and the second contact includes sidewalls parallel to the second fin and additional sidewalls orthogonal to the first source line. Other embodiments are described herein.
Abstract:
An embodiment includes a semiconductor apparatus comprising: a redistribution layer (RDL) including a patterned RDL line having two RDL sidewalls, the RDL comprising a material selected from the group comprising Cu and Au; protective sidewalls directly contacting the two RDL sidewalls; a seed layer including the material; and a barrier layer; wherein (a) the RDL line has a RDL line width orthogonal to and extending between the two RDL sidewalls, and (b) the seed and barrier layers each include a width parallel to and wider than the RDL line width. Other embodiments are described herein.
Abstract:
An embodiment integrates memory, such as spin-torque transfer magnetoresistive random access memory (STT-MRAM) within a logic chip. The STT-MRAM includes a magnetic tunnel junction (MTJ) that has an upper MTJ layer, a lower MTJ layer, and a tunnel barrier directly contacting the upper MTJ layer and the lower MTJ layer; wherein the upper MTJ layer includes an upper MTJ layer sidewall and the lower MTJ layer includes a lower MTJ sidewall horizontally offset from the upper MTJ layer. Another embodiment includes a memory area, comprising a MTJ, and a logic area located on a substrate; wherein a horizontal plane intersects the MTJ, a first Inter-Layer Dielectric (ILD) material adjacent the MTJ, and a second ILD material included in the logic area, the first and second ILD materials being unequal to one another. Other embodiments are described herein.
Abstract:
An embodiment includes an apparatus comprising: a first via layer between a substrate and a first metal layer; a second via layer between the first metal layer and second metal layer; a third via layer between the second metal layer and a third metal layer; and first and second access transistors each included in the substrate; wherein (a) the second via layer and the second metal layer each include portions of a first magnetic tunnel junction (MTJ) and portions of a second MTJ, (b) the third via layer includes a metal interconnect directly contacting the first and second MTJs, and (c) the third metal layer includes a bit line that couples to the first and second access transistors through the metal interconnect and the first and second MTJs. Other embodiments are described herein.
Abstract:
Embodiments of the present disclosure are directed towards an integrated circuit (IC) die. In embodiments, the IC die may include a semiconductor substrate, a plurality of active components disposed on a first side of the semiconductor substrate, and a plurality of passive components disposed on a second side of the semiconductor substrate. In embodiments the second side may be disposed opposite the first side. The passive components may, in some embodiments, include capacitors and/or resistors while the active components may, in some embodiments, include transistors. Other embodiments may be described and/or claimed.