Interconnects Discussion Group—Questionniare
General Topics
Technology Needs and Limits
Will technologies continue to scale down metal dimensions? Limits?
Is electromigration a fundamental technology limitation in advanced circuits?
In special circumstances only, or globally
Solutions?
What are the limitations of Low-K dielectrics?
Mechanical, thermal properties
Chemical properties (like moisture uptake)
Will stress voiding continue to be a concern?
Data Analysis
Are present statistical methods indefinitely extendable?
Are they valid?
Stress voiding in Cu/Low-K
Specialized structures, necessity and validity
How to bridge to product
Failure statistics
Electromigration stress limitations (current and temperature)
Stress Current Selection
How high Joule heating is acceptable ?
Dependencies (geometry, materials (metal, ILD), wafer/pkg. stress)?
How high a current density is acceptable ?
Dependencies (as above)?
Are 3 currents enough for n-value extraction?
Stress Temperature selection
How high line temperature is acceptable ?
Dependencies (geometry, materials (meta, ILD), wafer/pkg. stress)?
Are 3 temperatures enough for Ea value extraction?
How are test structures (ASTM, NIST, FSA, Jedec designs) chosen?
Can you test for nominal dimensions and or other sizes?
PCM for metallization ?
Wafer level (Isothermal, Sweat, other)?
Package level (possible to make faster?)