PATENT CLAIM ANALYSIS

Application Number: 16068098
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2019-01
Patent Classification: ["257", "489000"]

Abstract:
A semiconductor cell structure and power semiconductor device, wherein, the semiconductor cell structure includes: a highly-doped semiconductor material region, an epitaxial layer, a dielectric insulating layer, a semi-insulating material, and an active device region, a deep groove is further etched on the epitaxial layer, the deep groove vertically extends into the highly-doped semiconductor material region, the dielectric insulating layer is formed on a side wall inside the deep groove, and the deep groove is filled with the semi-insulating material. The cell structure can be applied to the power semiconductor device during actual application, the present invention dramatically reduces the difficulty of the process implementation, relaxes the harsh requirements on charge balance, broadens the tolerant charge mismatch percentage by approximately ten times, and also improves the long-term reliability of normal operation of the device cell at the same time.

Claim (Index 4):
The semiconductor cell structure as in  claim 1 , wherein an impurity concentration of the epitaxial layer ( 102 ) is higher than an impurity concentration of a drift region corresponding to a parallel-plane junction at a same operating voltage.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 95.0
- Lexical Diversity: 2.01299
- Patent Class: 257.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15182416', '12807116', '14647187', '10388498', '13954909']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9211267187232012
- 35 USC 102 Novelty (BERT): 0.4820681669436771
- Combined Prediction Score: 0.8772208635452488
- Mean Citation Score: 187.632084
- Max Citation Score: 195.53177
- Similarity Product: 146.3529404722142

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