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US 9,793,009 B2Granted
Repair information storage circuit and semiconductor apparatus including the same
AssigneeSK hynix Inc.
InventorsWoong Kyu Choi, Jong Man Im, Jun Cheol Park
Life of this patent
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Abstract
A repair information storage circuit may include a fuse block, a controller, and a fuse latch array. The fuse block provides a boot-up enable signal and repair information. The controller generates a voltage control signal in response to the boot-up enable signal. The fuse latch array stores repair information provided from the fuse block. The voltage control signal, which is used as a bulk bias of a transistor formed in the fuse latch array, is adjustable.
Claims19
A repair information storage circuit comprising:
- a controller configured to generate a voltage control signal in response to a boot-up enable signal;
- and
- a fuse latch array configured to store a repair information,
- wherein a threshold voltage of a transistor formed in the fuse latch array is adjusted according to the voltage control signal, and
- wherein the voltage control signal generated when the boot-up enable signal is not activated is different from the voltage control signal generated when the boot-up enable signal is activated.
2 more elements
A semiconductor apparatus comprising:
- a memory block comprising a plurality of unit memory blocks;
- a fuse block configured to store address information of a defective memory cell among memory cells of the memory block as repair information, and output the repair information during a boot-up operation period of the semiconductor apparatus;
- and
- a repair information storage circuit configured to store the repair information in one or more fuse latch arrays during the boot-up operation period, and adjust threshold voltage of a transistor formed in the fuse latch array so that the threshold voltage when the boot-up enable signal is activated is different from the threshold voltage when the boot-up enable signal is not activated.
1 more element
Dependencies are inferred from the claim text.