Patent ID: 9293180
Filing Date: 2016-03-22
CPC Classification: G11C

Claim Text:
1. A memory device comprising: a memory cell array comprising first and second word lines located adjacent to each other, a first memory cell connected to the first word line, and a second memory cell connected to the second word line and located adjacent to the first memory cell; a word line voltage supplying unit that transitions a word line voltage of the first word line from a first word line voltage to a second word line voltage, in response to a first control signal; and a transition control unit that generates the first control signal for controlling a pulse of the first word line voltage of the first word line in a transition period from the first word line voltage to the second word line voltage in such a way that a transition waveform profile from the first word line voltage to the second word line voltage is different from a transition waveform profile from the second word line voltage to the first word line voltage; wherein the first word line voltage is a selected word line voltage and the second word line voltage is a non-selected word line voltage, and wherein the transition control unit generates the first control signal so that a time period taken to transition the first word line voltage to the second word line voltage is longer than a time period taken to transition the second word line voltage to the first word line voltage.