摘要:
A method for testing integrated circuits includes forming a plurality of substantially identical first test structures, each comprising a first via structure connected to a first metal line, stress testing the plurality of first test structures to obtain a first plurality of failure times, and forming a plurality of substantially identical second test structures, each comprising a second via structure connected to a second metal line, wherein the second via structure has a substantially different reliability from the first via structure, and wherein the first metal line and the second metal line are substantially identical. The method further includes stress testing the plurality of second test structures to obtain a second plurality of failure times, and determining early failures of the plurality of first test structures and the plurality of second test structures.
摘要:
A method is disclosed for depositing a Black Diamond layer in a CVD chamber. Trimethylsilane, O2, and Ar are flowed into the chamber at 300° C. to 400° C. with an O2:Ar:trimethylsilane flow rate ratio that is preferably 1:1.5:6. The resulting low k dielectric layer is formed with a higher deposition rate than when Ar is omitted and has a k value of about 3 that increases only slightly in O2 plasma. A higher density, hardness, and tensile strength are achieved in the Black Diamond layer when Ar is included in the deposition process. The addition of Ar in the deposition maintains film thickness uniformity below 2% for a longer period so that PM cleaning operations are less frequent and affords a lower fluorocarbon plasma etch rate to enable improved trench depth control in a damascene scheme. A lower leakage current and higher breakdown voltage in achieved in the resulting metal interconnect.
摘要:
A substrate is provided having semiconductor device structures formed in and on the substrate. The semiconductor device structures comprise conductor layers embedded in openings in dielectric layers having a dielectric constant of less than 4.5. The dielectric layer has a roughness between the dielectric and the conductor wherein the roughness of the dielectric layer divided by the thickness of a barrier layer underlying the conductor layer is 0 to 1. The integrated circuit structure is prepared for failure analysis by removing the low dielectric constant dielectric layers and exposing the conductor layers for further failure analysis by optical examination or scanning electron microscope (SEM).
摘要:
A method for testing integrated circuits includes forming a plurality of substantially identical first test structures, each comprising a first via structure connected to a first metal line, stress testing the plurality of first test structures to obtain a first plurality of failure times, and forming a plurality of substantially identical second test structures, each comprising a second via structure connected to a second metal line, wherein the second via structure has a substantially different reliability from the first via structure, and wherein the first metal line and the second metal line are substantially identical. The method further includes stress testing the plurality of second test structures to obtain a second plurality of failure times, and determining early failures of the plurality of first test structures and the plurality of second test structures.
摘要:
A method for measuring a property of interconnections is provided. The method includes the following steps. A plurality of interconnection test patterns are provided. A pad to which the plurality of interconnection test patterns are parallelly connected is formed. At least one resistor is formed between at least one of the plurality of interconnection test patterns and the pad. The property of the plurality of interconnection test patterns is measured by applying a current, a voltage and/or a mechanical stress to the pad.
摘要:
A method for measuring a property of interconnections is provided. The method includes the following steps. A plurality of interconnection test patterns are provided. A pad to which the plurality of interconnection test patterns are parallelly connected is formed. At least one resistor is formed between at least one of the plurality of interconnection test patterns and the pad. The property of the plurality of interconnection test patterns is measured by applying a current, a voltage and/or a mechanical stress to the pad.
摘要:
The present disclosure provides a method and system for heat dissipation in semiconductor devices. In one example, an integrated circuit semiconductor device includes a semiconductor substrate; one or more metallurgy layers connected to the semiconductor substrate, and each of the one or more metallurgy layers includes: one or more conductive lines; and one or more dummy structures between the one or more conductive lines and at least two of the one or more dummy structures are connected; and one or more dielectric layers between the one or more metallurgy layers.
摘要:
A method of forming an opening in a stack of insulator layers featuring an underlying etch stop layer comprised of a tri-layer insulator composite, has been developed. The tri-layer insulator composite comprised of a bottom silicon rich, silicon oxide layer and a top silicon nitride layer, is first formed on a conductive region of a semiconductor substrate. After deposition of overlying insulator layers a photoresist shape is used as a etch mask to allow the desired contact or via hole shape to be defined in the overlying insulator layers via a first phase of an anisotropic dry etch procedure, with the first phase of the dry etching procedure terminating at the top surface of the silicon nitride layer. An over etch procedure used to insure complete removal of overlying insulator layer from the surface of the tri-layer insulator composite, is next performed as a second phase of the anisotropic dry etch procedure. The high etch rate ratio of insulator layer to silicon nitride allows the over etch cycle to be successfully accomplished without risk to underlying materials. A third phase of the anisotropic dry etch procedure selectively removes the silicon nitride layer and subsequently selectively removes the silicon rich, silicon oxide layer without damage to the now exposed conductive region, resulting in definition of the desired contact or via hole openings in the stack of insulator layers.
摘要:
A method of depositing a plasma enhanced CVD metal nitride layer over an exposed copper surface in a semiconductor wafer manufacturing process to improve the metal nitride layer adhesion and to reduce copper hillock formation including providing a process surface which is an exposed copper surface; preheating the process surface; plasma sputtering the exposed copper surface in-situ to remove copper oxides; and, depositing a metal nitride layer in-situ according to a plasma enhanced CVD process at a selected deposition pressure to reduce plasma ion bombardment energy transfer and to suppress-copper hillock formation.
摘要:
A method of reducing an electrical charge imbalance on a wafer process surface including providing a semiconductor wafer having a process surface including an upper most first material layer; cleaning the process surface according to a wafer cleaning process including at least one of spraying and scrubbing to produce an electrical charge imbalance at the process surface; and, subjecting the process surface to a nitrogen containing plasma treatment to at least partially neutralize the electrical charge imbalance.