US Patent 7450422 NAND architecture memory devices and operation

Non-volatile memory devices utilizing a modified NAND architecture where ends of the NAND string of memory cells are selectively coupled to different bit lines may facilitate increased memory densities, reduced fabrication steps and faster read operations when compared to traditional NAND memory array architectures. Programming and erasing of the memory cells can be accomplished in the same manner as a traditional NAND memory array. However, reading of the memory cells may be accomplished using charge sharing techniques similar to read operations in a DRAM device.