Semiconductor test device using leakage current and compensation system of leakage current
First Claim
1. A compensation system comprising:
- a semiconductor test device including first and second MOS transistors and a comparator, the first and second MOS transistors being fabricated in the same process as MOS transistors of a semiconductor device, and the comparator being configured to compare first and second leakage currents flowing in the first and second MOS transistors to test whether the MOS transistors of the semiconductor device are fabricated normally; and
a leakage current compensation device configured to compensate for leakage current flowing in the MOS transistors of the semiconductor device in response to an output signal from the semiconductor test device.
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Abstract
The present invention relates to a semiconductor test device which may use a leakage current and/or a compensation system of leakage current. The semiconductor test device, according to exemplary embodiments of the present invention, may include MOS transistors which may be fabricated in processes similar to those of the semiconductor device. The semiconductor test device may sense the leakage currents which may flow in the MOS transistors, may test whether the semiconductor device may be fabricated normally or abnormally, and may generate at least a normal or abnormal signal as a result. The leakage current compensation device may compensate for the leakage current which may flow in the semiconductor device in response to the normal or abnormal signal of the semiconductor test device. According to exemplary embodiments of the present invention, abnormally-fabricated MOS transistors may be tested and malfunctions of the semiconductor device may be reduced by the leakage current compensation device.
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Citations
13 Claims
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1. A compensation system comprising:
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a semiconductor test device including first and second MOS transistors and a comparator, the first and second MOS transistors being fabricated in the same process as MOS transistors of a semiconductor device, and the comparator being configured to compare first and second leakage currents flowing in the first and second MOS transistors to test whether the MOS transistors of the semiconductor device are fabricated normally; and a leakage current compensation device configured to compensate for leakage current flowing in the MOS transistors of the semiconductor device in response to an output signal from the semiconductor test device. - View Dependent Claims (2, 3)
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4. A compensation system comprising:
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a semiconductor test device including first and second leakage current sources and a comparator, the first and second leakage current sources being fabricated in the same process as at least one potential leakage current sources of a semiconductor device, and the comparator being configured to compare first and second leakage currents flowing in the first and second leakage current sources to test whether the at least one potential leakage current source is fabricated normally; and a leakage current compensation device configured to compensate for leakage current flowing in the at least one potential leakage current source in response to an output signal from the semiconductor test device. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification