PATENT CLAIM ANALYSIS

Application Number: 16082570
Application Type: Utility
Filing Date: 2018-09
Publication Date: 2019-01
Patent Classification: ["438", "462000"]

Abstract:
In a case where a back surface of an SiC semiconductor wafer, which is provided by a C surface, is covered with a back surface electrode and a scribe line cannot be confirmed, a reference line is formed before dicing. As a result, even when a processing upper surface from which dicing is carried out is a C surface, the dicing can be performed by estimating a scribe line with reference to the reference line. Accordingly, even if the semiconductor wafer is cut at a higher speed than that in the conventional art, a high-quality SiC semiconductor device with less chipping can be manufactured. A blade abrasion can be reduced, and costs can be also reduced.

Claim (Index 1):
A method for manufacturing a silicon carbide semiconductor device, comprising:\n preparing a semiconductor wafer that has a front surface provided by an Si surface, and a back surface provided by a C surface and formed with a semiconductor element, and includes a back surface electrode covering at least a portion of the back surface where the semiconductor element is formed; forming a reference line along a scribe line from the front surface; and dividing semiconductor wafer into chips by dicing the semiconductor wafer from the back surface with a dicing blade with reference to the reference line in a state where the back surface electrode has been formed on the semiconductor wafer.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 97.0
- Lexical Diversity: 1.92537
- Patent Class: 438.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['10372942', '11638500', '10787207', '12465349', '12094601']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8594826193489855
- 35 USC 102 Novelty (BERT): 0.4829529641227194
- Combined Prediction Score: 0.8218296538263589
- Mean Citation Score: 210.694004
- Max Citation Score: 214.58958
- Similarity Product: 165.2835997854996

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

Dataset: test