摘要:
A semiconductor device includes a substrate, an inter-metal dielectric (IMD) layer over the substrate, and either a nitrogen-containing tetraethoxysilane (TEOS) oxide layer or an oxygen-rich TEOS oxide layer over the IMD layer. The molecular ratio of oxygen in the oxygen-rich TEOS oxide layer is greater than 70%. The IMD layer comprises an extra-low dielectric constant (ELK) layer.
摘要:
A non-ESL semiconductor interconnection structure and a method of forming the same are provided. The non-ESL semiconductor interconnection structure includes a first low-k dielectric layer comprising a first region and a second region overlying the substrate, a plurality of conductive features in the first low-k dielectric layer, a cap layer on at least a portion of the conductive features, and a dielectric capping layer overlying the first low-k dielectric layer in the second region but not in the first region. The conductive features in the second region have a substantially greater spacing than the conductive features in the first region. The dielectric capping layer preferably has an inherent compressive stress.
摘要:
A semiconductor device includes a substrate, an inter-metal dielectric (IMD) layer over the substrate, and either a nitrogen-containing tetraethoxysilane (TEOS) oxide layer or an oxygen-rich TEOS oxide layer over the IMD layer. The molecular ratio of oxygen in the oxygen-rich TEOS oxide layer is greater than 70%. The IMD layer comprises an extra-low dielectric constant (ELK) layer.
摘要:
A process for forming an interconnect structure in a low-k dielectric layer includes etching to form trenches in the dielectric layer, removal of photoresist, and further etching to remove damaged portions of the dielectric layer in sidewalls of the trenches. An interconnect structure includes a low-k dielectric layer formed on a substrate, and a conductor embedded in the dielectric layer, the conductor having an edge portion with an inwardly rounded shape.
摘要:
A process for forming an interconnect structure in a low-k dielectric layer includes etching to form trenches in the dielectric layer, removal of photoresist, and further etching to remove damaged portions of the dielectric layer in sidewalls of the trenches. An interconnect structure includes a low-k dielectric layer formed on a substrate, and a conductor embedded in the dielectric layer, the conductor having an edge portion with an inwardly rounded shape.
摘要:
A non-ESL semiconductor interconnection structure and a method of forming the same are provided. The non-ESL semiconductor interconnection structure includes a first low-k dielectric layer comprising a first region and a second region overlying the substrate, a plurality of conductive features in the first low-k dielectric layer, a cap layer on at least a portion of the conductive features, and a dielectric capping layer overlying the first low-k dielectric layer in the second region but not in the first region. The conductive features in the second region have a substantially greater spacing than the conductive features in the first region. The dielectric capping layer preferably has an inherent compressive stress.
摘要:
A FinFET device may include a dummy FinFET structure laterally adjacent an active FinFET structure to reduce stress imbalance and the effects of stress imbalance on the active FinFET structure. The FinFET device comprises an active FinFET comprising a plurality of semiconductor fins, and a dummy FinFET comprising a plurality of semiconductor fins. The active FinFET and the dummy FinFET are laterally spaced from each other by a spacing that is related to the fin pitch of the active FinFET.
摘要:
An interconnect structure includes a first trench and a second trench. The second trench is wider than the first trench. Both trenches are lined with a diffusion barrier layer, and a first conductive layer is deposited over the diffusion barrier layer. A metal cap layer is deposited over the first conductive layer. A second conductive layer is deposited over the metal cap layer in the second trench.
摘要:
The present disclosure provides a method of fabricating a semiconductor device. The method includes forming a patterned dielectric layer having a plurality of first openings. The method includes forming a conductive liner layer over the patterned dielectric layer, the conductive liner layer partially filling the first openings. The method includes forming a trench mask layer over portions of the conductive liner layer outside the first openings, thereby forming a plurality of second openings, a subset of which are formed over the first openings. The method includes depositing a conductive material in the first openings to form a plurality of vias and in the second openings to form a plurality of metal lines. The method includes removing the trench mask layer.
摘要:
A method and apparatus for dispensing a liquid etchant onto a wafer dispenses the liquid etchant onto a wafer using a scanning dispensing nozzle while controlling the dispensing temperature of the etchant in real time as a function of the radial position of the dispensing nozzle over the wafer. The dispensing temperature of the etchant is controlled to enhance the effectiveness of the etchant and thus compensate for the lower etching rate zones in the wafer.