Abstract:
This invention is a method comprising providing a substrate, forming a first layer on the substrate, wherein the first layer has a dielectric constant of less than 3.0 and comprises an organic polymer, applying an organosilicate resin over the first layer, removing a portion of the organosilicate resin to expose a portion of the first layer, and removing the exposed portions of the first layer. The invention is also an integrated circuit article comprising an active substrate containing transistors and an electrical interconnect structure containing a pattern of metal lines separated, at least partially, by layers or regions of an organic polymeric material having a dielectric constant of less than 3.0 and further comprising a layer of an organosilicate resin above at least one layer of the organic polymer material.
Abstract:
There is provided a semiconductor device, comprising a substrate (101) that includes an integrated circuit region (1), first and second interlayer insulation films (108, 111, 112) formed above the substrate, and a reinforcing structure comprising a main-wall part (2) and a sub-wall part (3) which are formed in the first and second interlayer insulation films, wherein the main-wall part surrounds the integrated circuit region in a periphery thereof and the sub-wall part is provided apart from the main-wall part in a corner region of the semiconductor device and is located between the integrated circuit region and the first bend section of the main-wall part. Both the main-wall part and the sub-wall part are formed by metal-filled trenches (131, 132) in the first and second interlayer insulation films.
Abstract:
A semiconductor device has a substrate (1); a multi-layered interconnect formed on the substrate, and having a plurality of interconnect layers, each of which being configured by an interconnect and an insulating layer, stacked therein; a memory circuit (200) formed in a memory circuit region on the substrate in a plan view, and having a peripheral circuit and at least one capacitor element (19) embedded in the multi-layered interconnect; and a logic circuit (100) formed in a logic circuit region on the substrate, wherein the capacitor element is configured by a lower electrode (14), a capacitor insulating film (15), an upper electrode (16), an embedded electrode and an upper interconnect (18); the top surface of the upper interconnect, and the top surface of the interconnect (80) configuring the logic circuit formed in the same interconnect layer with the upper interconnect, are aligned to the same plane.
Abstract:
A dual damascene process for forming conductive interconnects on an integrated circuit die. The process comprises providing a layer (16) of porous, ultra low-k (ULK) dielectric material in which a via opening (30) is subsequently formed. A thermally degradable polymeric ('porogen') material (42) is applied to the side walls of the opening (30) such that the porogen material penetrates deeply into the porous ULK dielectric material (thereby sealing the pores and increasing the density thereof). Once a conductive material (36) has been provided with the opening (30) and polished back by means of chemical mechanical polishing (CMP), the complete structure is subjected to a curing step to cause the porogen material (44) with the ULK dielectric layer (16) to decompose and evaporate, thereby restoring the porosity (and low-k value) of the dielectric layer (16).
Abstract:
A metal wiring plus low-k dielectric interconnect structure of the dual damascene-type is provided wherein the conductive metal lines and vias are built into a hybrid low-k dielectric which includes two spun-on dielectrics that have different atomic compositions and at least one of the two spun-on dielectrics is porous. The two spun-on dielectrics used in forming the inventive hybrid low-k dielectric each have a dielectric constant of about 2.6 or less, preferably each dielectric of the hybrid structure has a k of from about 1.2 to about 2.2. By utilizing the inventive hybrid low-k dielectric excellent control over metal line resistance (trench depth) is obtained, without no added cost. This is achieved without the use of a buried etch stop layer, which if present, would be formed between the two spun-on dielectrics. Moreover, the spun-on dielectrics of the hybrid low-k dielectric have distinctly different atomic compositions enabling control over the conductor resistance using the bottom spun-on dielectric (i.e., via dielectric) as an inherent etch stop layer for the upper spun-on dielectric (i.e., line dielectric).
Abstract:
A method of fabricating a semiconductor device includes the steps of forming a first insulation film on a substrate by a spin-on process, applying a curing process to the first insulation film at a temperature of 380 - 500 C over a duration of 5 - 180 seconds, and forming a second insulation film on the first insulation film by a spin-on process.