Dynamic random access memory and fabrication thereof
A dynamic random access and storage unit technology, which is applied in semiconductor/solid-state device manufacturing, electrical components, transistors, etc., can solve the problems of increasing the integration of dynamic random access memory components, increasing the surface area of capacitors, difficult capacitors, etc., to achieve Improve storage capacity, increase integration, high integration effect
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[0044] Figure 1 to Figure 16 It shows a manufacturing flow chart of a dynamic random access memory (Dynamic Random Access Memory, DRAM) array according to a preferred embodiment of the present invention. figure 1 A perspective view showing the arrangement of this DRAM array clearly, Figure 2 to Figure 9 , Figure 11 to Figure 13 as well as Figure 16 (a) Yes figure 1 A cross-sectional view of the I-I′ position, and Figure 16 (b) is figure 1 Another cross-sectional view of the I-I' part. Picture 10 , Figure 14 as well as Figure 15 It is the top view.
[0045] If we explain in a more specific way, then figure 1 Figure 6 shows the manufacturing flow chart of the capacitor of the DRAM array, Figure 7 to Figure 12 It shows the manufacturing flow chart of the vertical transistor of the DRAM array, and Figure 13 to Figure 16 It is a manufacturing flow chart of subsequent manufacturing processes, including the manufacturing flow chart of bit lines and word lines.
[0046]
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