Equation 5 · Part 2 · Chiplets and Advanced Packaging in Practice: An Advanced Technical Guide
subscript
subscript
What this part means
The lower label selects a particular version, component, or indexed member of the quantity. For example, x₀ and xₜ can be values at different positions.
Its job in the formula
A subscript distinguishes a version, component, step, or member of a quantity. It does not automatically mean multiplication.
Full expression→subscript→Article meaning
The passage around this formula
The yield model above is the honest starting point for that comparison, and its assumptions matter more than its output. It assumes each die’s yield is independent of the others bonded alongside it, which is optimistic — a bonding-process defect (misalignment, contamination, a warped interposer) can degrade several dies on one assembly simultaneously, correlating what the simple product model treats as independent draws. It also ignores that bond yield itself is a separate term: even with every input die screened good, the bonding step introduces its own defect rate that a pure per-die KGD program does nothing to fix. A more complete model multiplies the per-die yield product by a separate…
Learn the underlying idea
A subscript is a label attached below a symbol. It often selects a time step, component, category, or member of a sequence.
Open the illustrated subscripts: which member of a family? guide →
Sources cited in the article section
These citations provide research context; check each source for the exact claim it supports.