Flip chip, also known as controlled collapse chip connection or its abbreviation, C4, is a method for interconnecting dies such as semiconductor devices, IC chips, integrated passive devices and micro
Intel Mobile Celeron in a flip-chip BGA package (FCBGA-479); the BGA package substrate or flip-chip substrate, also called a BGA or flip-chip interposer, is dark yellow, and the silicon die appears dark blue.
Underside of a die from a flip-chip package, the top metal layer on the IC die or top metallization layer, and metallized pads for flip-chip mounting are visible