| 摘要 |
PURPOSE: A repair circuit of semiconductor device is provided to use a spare word line efficiently by replacing the divided spare word line in repair. CONSTITUTION: A semiconductor device comprises a row decoder for selecting a sub-word line driver selecting a main word line in response to an address signal, a first input buffer, a second input buffer for receiving an output signal from the first input buffer and the address signal, and a pre-row decoder for outputting a normal sub-word line driver driving signal in response to an output signal from the second input buffer. The semiconductor device further comprises a redundant row decoder for selecting a repair sub-word line in response to the output signal from the second input buffer. The semiconductor device uses the spare word lines maximally, so that the semiconductor device can improve a yield of the semiconductor device.
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