PATENT CLAIM ANALYSIS

Application Number: 15878381
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-07
Patent Classification: ["257", "140000"]

Abstract:
This invention discloses a method for manufacturing a semiconductor power device in a semiconductor substrate comprises an active cell area and a termination area. The method comprises the steps of a) growing and patterning a field oxide layer in the termination area and also in the active cell area on a top surface of the semiconductor substrate b) depositing and patterning a polysilicon layer on the top surface of the semiconductor substrate at a gap distance away from the field oxide layer; c) performing a blank body dopant implant to form body dopant regions in the semiconductor substrate substantially aligned with the gap area followed by diffusing the body dopant regions into body regions in the semiconductor substrate; d) implanting high concentration body-dopant regions encompassed in and having a higher dopant concentration than the body regions and e) applying a source mask to implant source regions having a conductivity opposite to the body region with the source regions encompassed in the body regions and surrounded by the high concentration body-dopant regions.

Claim (Index 1):
A super-junction semiconductor power device disposed in an epitaxial layer supported on in a semiconductor substrate comprises an active cell area and a termination area further comprising:\n a gate comprises a patterned polysilicon layer disposed on a top surface of the epitaxial layer; a patterned field oxide layer disposed in said termination area and also in the active cell area at a gap area away from said patterned polysilicon layer on top of the epitaxial layer substrate; doped body regions disposed in the epitaxial layer substantially diffused from a region aligned with the gap area below the top surface and extended to regions below the patterned polysilicon layer and the patterned field oxide layer; a plurality of doped columns each vertically extended from the body regions into the epitaxial layer wherein the epitaxial layer and the semiconductor substrate having a first conductivity type and the doped columns having a second conductivity type; and doped source regions encompassed in and having an opposite conductivity type from said body regions; and a high concentration body-dopant region encompassed in each of the body regions and having a higher dopant concentration than said body region surrounding the source regions.

Metadata:
- Claim Count in Document: 29.0
- Percentile: 86.0
- Lexical Diversity: 2.36842
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15479281', '12584151', '14454696', '13684203', '12587054']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9265432955696776
- 35 USC 102 Novelty (BERT): 0.5700681065059402
- Combined Prediction Score: 0.890895776663304
- Mean Citation Score: 411.804136
- Max Citation Score: 445.47852
- Similarity Product: 409.19318579485423

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