1-4.Density
The mass density or density of a material is its mass per unit volume. The symbol most often used for density is ρ (the lower case Greek letter rho). Mathematically, density is defined as mass divided by volume:
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2-13.Hex Plate
Hexagonal shaped platelets on the surface of the wafer which appear silver in color to the unaided eye, under diffuse illumination.
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2-19.Scratches
A scratch is dened as a singular cut or groove into the frontside wafer surface with a length-to-width ratio of greater than 5 to 1, and visible under hight intensity illumination.
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2-25.FWHM
Full width at half maximum (FWHM) is an expression of the extent of a function, given by the difference between the two extreme values of the independent variable at which the dependent variable is equal to half of its maximum value.
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3-6. Edge Chips
Areas where material has been unintentionally removed from the wafer.Do not confuse fractures in epi crown with edge chips.
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1-2.Stacking Sequence
If we are going to make a laminated structure, we must know the thickness of each ply and the angle of each ply traditionally in degrees defined from the top layer down.
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