PATENT CLAIM ANALYSIS

Application Number: 15985987
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2019-01
Patent Classification: ["257", "194000"]

Abstract:
Characteristics of a semiconductor device are improved. A semiconductor device includes a sequential stack of a buffer layer, a channel layer, and a barrier layer, and includes a mesa part including a fourth nitride semiconductor layer formed over the stack, and a side part formed on both sides of the mesa part and including a thin film part of the fourth nitride semiconductor layer. Generation of 2DEG is suppressed below the mesa part while being unsuppressed below the side part. In this way, the side part that disables the 2DEG suppression effect is provided on an end portion of the mesa part, thereby a distance from an end portion of the side part to the gate electrode is increased, making it possible to suppress leakage caused by a current path passing through an undesired channel formed between a gate insulating film and the mesa part.

Claim (Index 11):
A method of manufacturing a semiconductor device, comprising the steps of:\n (a) forming a second nitride semiconductor layer over a first nitride semiconductor layer; (b) forming a third nitride semiconductor layer over the second nitride semiconductor layer; (c) forming a fourth nitride semiconductor layer over the third nitride semiconductor layer; (d) forming a mesa part including the fourth nitride semiconductor layer, and forming a side part including the fourth nitride semiconductor layer and provided on both sides of the mesa part; and (e) forming a gate electrode above the mesa part, wherein the side part extends to the outside of the gate electrode, and wherein generation of two-dimensional electron gas between the second nitride semiconductor layer and the third nitride semiconductor layer is suppressed below the mesa part while being unsuppressed below the side part.

Metadata:
- Claim Count in Document: 8.0
- Percentile: 93.0
- Lexical Diversity: 2.16667
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15966773', '15889244', '15463320', '15904701', '15841676']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9245084634408386
- 35 USC 102 Novelty (BERT): 0.4901554941273114
- Combined Prediction Score: 0.8810731665094859
- Mean Citation Score: 271.702734
- Max Citation Score: 278.0539
- Similarity Product: 261.06667779623865

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