PATENT CLAIM ANALYSIS

Application Number: 16190529
Application Type: Utility
Filing Date: 2018-11
Publication Date: 2019-03
Patent Classification: ["257", "076000"]

Abstract:
A method for producing a nitride semiconductor device. The method comprises providing a substrate made of a material other than a nitride semiconductor. The material has a hexagonal crystal structure. An upper face of the substrate has at least one flat section. The method further comprises growing a first nitride semiconductor layer on the upper face of the substrate. The first nitride semiconductor layer is made of monocrystalline AlN. The first nitride semiconductor layer has an upper face that is a +c plane. The first nitride semiconductor layer has a thickness in a range of 10 nm to 100 nm. The method further comprises growing a second nitride semiconductor layer on the upper face of the first nitride semiconductor layer. The second nitride semiconductor layer is made of In X Al Y Ga 1−X−Y N (0≤X, 0≤Y, X+Y<1). In an initial stage of growing the second nitride semiconductor layer, micronuclei are formed in multiple locations on the upper face of the first nitride semiconductor layer such that a plurality of upside-down hexagonal pyramid-shaped or upside-down hexagonal frustum-shaped recesses separate the micronuclei above the at least one flat section of the upper face of the substrate. After the initial stage of growing, further growth is performed to reduce a size of the recesses until the recesses are substantially eliminated. The further growth is performed such that the recesses are substantially eliminated before a thickness of the second nitride semiconductor layer grows to 800 nm. The second nitride semiconductor layer is grown to have an upper face with at least one flat section.

Claim (Index 4):
The method for producing a nitride semiconductor device according to  claim 1 , wherein the first nitride semiconductor layer is grown by metalorganic chemical vapor deposition.

Metadata:
- Claim Count in Document: 26.0
- Percentile: 98.0
- Lexical Diversity: 2.94792
- Patent Class: 257.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14944049', '15828267', '15339325', '11568336', '12515157']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9276940970120208
- 35 USC 102 Novelty (BERT): 0.5660987007136637
- Combined Prediction Score: 0.891534557382185
- Mean Citation Score: 361.029754
- Max Citation Score: 422.65704000000005
- Similarity Product: 420.65142880273817

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