PATENT CLAIM ANALYSIS

Application Number: 16147345
Application Type: Utility
Filing Date: 2018-09
Publication Date: 2019-02
Patent Classification: ["257", "197000"]

Abstract:
Methods for providing improved isolation structures in a SiGe BiCMOS process are provided. In one method, an n-type epitaxial layer is grown over a p-type high-resistivity substrate. A mask covers a first region, and exposes a second region, of the epitaxial layer. A p-type impurity is implanted through the mask, counter-doping the second region to become slightly p-type. Shallow trench isolation (STI) and optional deep trench isolation (DTI) regions are formed through the counter-doped second region, thereby providing an isolation structure. The first region of the epitaxial layer forms a collector region of a heterojunction bipolar transistor. In another method, shallow trenches are etched partially into the epitaxial layer through a mask. A p-type impurity is implanted through the mask, thereby counter-doping thin exposed regions of the epitaxial layer to become slightly p-type. The shallow trenches are filled with dielectric material and a CMP process is performed to form shallow trench isolation regions.

Claim (Index 8):
The semiconductor structure of  claim 1 , wherein there are one or more openings in the one or more shallow trench isolation regions that expose the one or more lightly doped regions of the first conductivity type.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 97.0
- Lexical Diversity: 2.18987
- Patent Class: 257.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['15588011', '15658252', '16116816', '15727159', '12069941']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9449115298100342
- 35 USC 102 Novelty (BERT): 0.5969151854035749
- Combined Prediction Score: 0.9101118953693884
- Mean Citation Score: 410.425668
- Max Citation Score: 549.6093
- Similarity Product: 432.0085760677457

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

Dataset: test