As we’ve explained, Kinpak is Kingmax’s sister company specialized in packing, i.e., cutting the memory wafer and adding a packing and pins to the memory silicon.

click to enlarge
Figure 1: Arrival at Kingpak.

Memory packing process is divided into two big steps: front-end and back-end. In Figure 2, you can see the steps inside the front-end process, while in Figure 3 you can see the steps inside the back-end process.

click to enlarge
Figure 2: Front-end steps for memory packing.

click to enlarge
Figure 3: Back-end steps for memory packing.

The whole process isn’t fast. For BGA memory chips the front-end process takes 5 days, while the back-end process takes 4.5 or 5.5 days.

click to enlarge
Figure 4: Some stats from the packing process.