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US 10,763,815 B2Granted
IC chip and method of determining a fuse to be cut off
AssigneeKabushiki Kaisha Toshiba
InventorsTamio Ikehashi, Hiroaki Yamazaki
Life of this patent
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Abstract
According to one embodiment, an IC chip includes a plurality of fuse elements including a plurality of fuse portions each of which is to be cut off by a stress, and a plurality of actuator portions provided for the plurality of fuse portions, respectively, and each of which applies a stress to corresponding one of fuse portions, and a control circuit supplying a control signal for cutting off desired one of the fuse portions to corresponding one of the actuator portions.
Claims19
An IC chip comprising:
- a plurality of fuse elements including a plurality of fuse portions, each of which is to be cut off by a stress, a plurality of actuator portions provided for the plurality of fuse portions, respectively, each of which applies a stress to corresponding one of the fuse portions, and a plurality of fixed portions;
- and
- a control circuit supplying a control signal for cutting off desired one of the fuse portions to corresponding one of the actuator portions, wherein
- each of the fuse portions is provided between corresponding one of the actuator portions and corresponding one of the fixed portions.
1 more element
A method of determining a fuse to be cut off, comprising:
- preparing an IC chip, the IC chip including:
- a plurality of impedance elements constituting a resonance circuit and including a first impedance element and a second impedance element both of which have a same impedance value;
- a plurality of fuse portions including a first fuse portion electrically connected to the first impedance element and a second fuse portion electrically connected to the second impedance element;
- and
- a control circuit generating a control signal for cutting off desired one of the fuse portions;
- obtaining an initial resonance frequency of the resonance circuit to which the first impedance element and the second impedance element are electrically connected;
- obtaining a first resonance frequency of the resonance circuit from which the first impedance element is electrically disconnected by cutting off the first fuse portion;
- obtaining a second resonance frequency of the resonance circuit from which the first impedance element and the second impedance element are electrically disconnected by cutting off the first fuse portion and the second fuse portion;
- and
- determining one or more of the fuse portions to be cut off on the basis of the initial resonance frequency, the first resonance frequency and the second resonance frequency.
7 more elements
An IC chip comprising:
- a plurality of fuse elements including a plurality of fuse portions, each of which is to be cut off by a stress, and a plurality of movable actuator portions provided for the plurality of fuse portions, respectively;
- and
- a control circuit supplying a control signal for cutting off desired one of the fuse portions to corresponding one of the actuator portions, wherein
- each of the fuse portions is capable of being cut off by a mechanical stress which is applied based on a movement of corresponding one of the actuator portions.
1 more element
Dependencies are inferred from the claim text.