25-04-2013 дата публикации
Номер: US20130102111A1
A stack that includes non-volatile memory devices is disclosed. One of the non-volatile memory devices in the stack is a master device, and the remaining memory device or devices is a slave device(s). 1stacking at least two semiconductor chips, one of the semiconductor chips being a master memory device and another of the semiconductor chips being a slave memory device, the master memory device being substantially larger dimensioned than the slave memory device;wiring the stacked semiconductor chips together by Through-Silicon Vias; andconnecting the stacked semiconductor chips to a package printed circuit board by flip chip and bumping.. A method comprising: This application is a continuation of U.S. application Ser. No. 13/005,774, filed Jan. 13, 2011, which is a continuation of U.S. application Ser. No. 12/429,310, filed Apr. 24, 2009, which claims the benefit of priority of U.S. Provisional Patent Application Ser. No. 61/154,910 filed Feb. 24, 2009. The entire teachings of the above applications are incorporated herein by reference in their entirety.Today, many electronic devices include memory systems to store information. Some memory systems store, for example, digitized audio or video information for playback by a respective media player. Other memory systems store, for example, software and related information to carry out different types of processing functions. Also, some types of memory systems such as, for example, Dynamic Random Access Memory (DRAM) systems and Static Random Access Memory (SRAM) systems are volatile memory systems in that stored data is not preserved when the power is off, whereas other types of memory systems such as, for example, NAND flash memory systems and NOR flash memory systems are nonvolatile memory systems in that stored data is preserved when the power is off.As time progresses, consumers have an expectation that memory systems will have increasingly larger capacities provided by chips of increasing smaller size. Historically ...
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