PATENT CLAIM ANALYSIS

Application Number: 15910766
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-07
Patent Classification: ["702", "058000"]

Abstract:
A method for predicting remaining life of electromigration failure is disclosed. The methods includes: establishing an electromigration life model of a MOS device; acquiring a normal electromigration failure lifetime τ 1 , based on a current density and a first environment temperature under a preset normal operating condition and the electromigration life model; acquiring a current density stress, based on a target prognostic point τ 2 , a second environment temperature and the electromigration life model; inputting the current density stress into a MOS device electromigration failure warning circuit based on a prognostic cell; and if the prognostic circuit of EM failure for a MOS device outputs a high level after a time τ 3 , acquiring a remaining life of electromigration failure corresponding to τ 2 ′ based on τ 1 , τ 2  and τ 3 . A device for remaining life prediction for electromigration failure is also disclosed.

Claim (Index 1):
A device for remaining life prediction for EM failure, comprising:\n a model establishing unit, configured to establish an EM life model of a MOS device; a first acquisition unit, configured to acquire a normal EM failure lifetime \u03c4 1 , based on a current density and a first environment temperature under a preset normal operating condition and the EM life model; a second acquisition unit, configured to acquire a current density stress, based on a target prognostic point \u03c4 2 , a second environment temperature and the EM life model; a current input unit, configured to input the current density stress into a prognostic circuit of EM failure for a MOS device, wherein the prognostic circuit of EM failure for a MOS device is a warning circuit that becomes failure due to resistance variation caused by-EM; and a third acquisition unit, configured to if the prognostic circuit of EM failure for the MOS device outputs a binary high level after a time \u03c4 3 , acquire a remaining life of EM failure corresponding to \u03c4 2 \u2032 based on \u03c4 1 , \u03c4 2  and \u03c4 3 , and further configured to: acquire a remaining life of EM failure corresponding to the target prognostic point by \u03c4 \ue89e \ue89e 2 \u2032 = ( \u03c4 \ue89e \ue89e 1 \u03c4 \ue89e \ue89e 2 - 1 ) \ue89e \u03c4 \ue89e \ue89e 3 , where \u03c4 2 \u2032 is the remaining life of EM failure corresponding to the target prognostic point.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 90.0
- Lexical Diversity: 2.40909
- Patent Class: 702.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14348844', '10716686', '13336594', '14348849', '10325194']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.1627814011545604
- 35 USC 102 Novelty (BERT): 0.5468814027794795
- Combined Prediction Score: 0.2011914013170523
- Mean Citation Score: 218.161648
- Max Citation Score: 390.68512
- Similarity Product: 363.99447660175326

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test