Patent ID: 7061813

Claim:
A page buffer of a non-volatile memory device, comprising: a first latch unit for storing data; one or more second latch units for storing data; transfer units connected between the first latch unit and the second latch units, for transferring the data stored in the first latch unit to the second latch units; a path select unit that senses data from bit lines and stores the sensed data in the first latch unit, in a read operation, and transfers the data from the first and second latch units to the bit lines, in a program operation; a sensing unit for allowing the path select unit to sense data or allowing the data received from the bit lines to be stored in the first latch; and a data I/O unit for transferring the data from a data line to the first and second latch units or the data stored in the first and second latch units to the data line.