PATENT CLAIM ANALYSIS

Application Number: 15937674
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2019-10
Patent Classification: ["257", "494000"]

Abstract:
A superjunction power semiconductor device includes a termination region with superjunction structures having higher breakdown voltage than the breakdown voltage of the active cell region. In one embodiment, the termination region includes superjunction structures having lower column charge as compared to the superjunction structures formed in the active cell region. In other embodiments, a superjunction power semiconductor device incorporating superjunction structures with slanted sidewalls where the grading of the superjunction columns in the termination region is reduced as compared to the column grading in the active cell region. The power semiconductor device is made more robust by ensuring any breakdown occurs in the core region as opposed to the termination region. Furthermore, the manufacturing process window for the power semiconductor device is enhanced to improve the manufacturing yield of the power semiconductor device.

Claim (Index 4):
The superjunction power semiconductor device of  claim 1 , wherein the first superjunction structure comprises alternating first columns of the first conductivity type and second columns of a second conductivity type as the first plurality of alternating N-type and P-type thin semiconductor regions, the first columns and second columns having a first column charge to realize charge balance; and the second superjunction structure comprises alternating third columns of the first conductivity type and fourth columns of the second conductivity type as the second plurality of alternating N-type and P-type thin semiconductor regions, the third columns and fourth columns having a second column charge to realize charge balance, the second column charge being lower than the first column charge for at least a portion of the third and fourth columns.

Metadata:
- Claim Count in Document: 29.0
- Percentile: 90.0
- Lexical Diversity: 2.31148
- Patent Class: 257.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['12610052', '12709114', '13923065', '13900162', '15632204']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9400827022494994
- 35 USC 102 Novelty (BERT): 0.533170351732065
- Combined Prediction Score: 0.899391467197756
- Mean Citation Score: 351.447778
- Max Citation Score: 368.7433
- Similarity Product: 274.6060201149702

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

Dataset: test