摘要:
A structure comprising a layer of copper, a barrier layer, a layer of AlCu, and a pad-limiting layer, wherein the layer of AlCu and barrier layer are interposed between the layer of copper and pad-limiting layer.
摘要:
A multi-level, coplanar copper damascene interconnect structure on an integrated circuit chip includes a first planar interconnect layer on an integrated circuit substrate and having plural line conductors separated by a dielectric material having a relatively low dielectric constant and a relatively low elastic modulus. A second planar interconnect layer on the first planar interconnect layer comprises a dielectric film having an elastic modulus higher than in the first planar interconnect layer and conductive vias therethrough. The vias are selectively in contact with the line conductors. A third planar interconnect layer on the second planar interconnect layer has plural line conductors separated by the dielectric material and selectively in contact with the vias.
摘要:
The present invention provides a hardmask that is located on a surface of a low k dielectric material having at least one conductive feature embedded therein. The hardmask includes a lower region of a hermetic oxide material located adjacent to the low k dielectric material and an upper region comprising atoms of Si, C and H located above the hermetic oxide material. The present invention also provides a method of fabricating the inventive hardmask as well as a method to form an interconnect structure containing the same.
摘要:
In the back end of an integrated circuit employing dual-damascene interconnects, the interconnect members have a first non-conformal liner that has a thicker portion at the top of the trench level of the interconnect; and a conformal second liner that combines with the first liner to block diffusion of the metal fill material.
摘要:
A device, system and method for evaluating reliability of a semiconductor chip are disclosed. Strain is determined at a location of interest in a structure. Failures are evaluated in a plurality of the structures after stress cycling to determine a strain threshold with respect to a feature characteristic. Structures on a chip or chips are evaluated based on the feature characteristic to predict reliability based on the strain threshold and the feature characteristic. Predictions and design changes may be made based on the results.
摘要:
Methods for sealing an organic ILD layer and a metal layer after an etching step. The method includes etching through an ILD layer and leaving a remaining portion of an underlying metal layer cap, maintaining the device in an inert gas, and depositing at least a portion of a liner into the opening to seal the ILD layer and the metal layer. Subsequent processing may include formation of a via by etching through the portion of the liner and the remaining portion of the cap layer, and depositing a metal.
摘要:
Stacked via pillars, such as metal via pillars, are provided at different and designated locations in IC chips to support the chip structure during processing and any related processing stresses such as thermal and mechanical stresses. These stacked via pillars connect and extend from a base substrate of the strip to a top oxide cap of the chip. The primary purpose of the stacked via pillars is to hold the chip structure together to accommodate any radial deformations and also to relieve any stress, thermal and/or mechanical, build-tip during processing or reliability testing. The stacked via pillars are generally not electrically connected to any active lines or vias, however in some embodiments the stacked via pillars can provide an additional function of providing an electrical connection in the chip.
摘要:
Methods of forming and the integrated circuit device structure formed having vertical interfaces adjacent an existing crack stop around a perimeter of a chip, whereby the vertical interface controls cracks generated during side processing of the device such as dicing, and in service from penetrating the crack stop. The vertical interface is comprised of a material that prevents cracks from damaging the crack stop by deflecting cracks away from penetrating the crack stop, or by absorbing the generated crack energies. Alternatively, the vertical interface may be a material that allows advancing cracks to lose enough energy such that they become incapable of penetrating the crack stop. The present vertical interfaces can be implemented in a number of ways such as, vertical spacers of release material, vertical trenches of release material or vertical channels of the release material.
摘要:
A device and method for evaluating reliability of a semiconductor chip structure built by a manufacturing process includes a test structure built in accordance with a manufacturing process. The test structure is thermal cycled and the yield of the test structure is measured. The reliability of the semiconductor chip structure built by the manufacturing process is evaluated based on the yield performance before the thermal cycling.
摘要:
Stacked via pillars, such as metal via pillars, are provided at different and designated locations in IC chips to support the chip structure during processing and any related processing stresses such as thermal and mechanical stresses. These stacked via pillars connect and extend from a base substrate of the strip to a top oxide cap of the chip. The primary purpose of the stacked via pillars is to hold the chip structure together to accommodate any radial deformations and also to relieve any stress, thermal and/or mechanical, build-up during processing or reliability testing. The stacked via pillars are generally not electrically connected to any active lines or vias, however in some embodiments the stacked via pillars can provide an additional function of providing an electrical connection in the chip.