SEMICONDUCTOR MEMORY DEVICE CAPABLE OF INCREASING MEMORY CAPACITY OF A MEMORY MODULE PER UNIT AREA

摘要

PURPOSE: A semiconductor memory device is provided to reduce power consumption of a memory module by decreasing the frequency of refresh operations of a memory cell.;CONSTITUTION: A memory cell(CL) includes a bit line, a word line, n data lines(DL_1 to DL_2), a transistor(Tr), and n capacitors. The transistor and n capacitors have a channel in an oxide semiconductor layer. One of a source and a drain of a transistor is connected to one bit line and the other is connected to one electrode of each capacitor. A gate of the transistor is connected to the word line.;COPYRIGHT KIPO 2012