PATENT CLAIM ANALYSIS

Application Number: 16069914
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2019-01
Patent Classification: ["257", "077000"]

Abstract:
A method for manufacturing a compound semiconductor device includes: providing a semiconductor substrate including a foundation layer having a first conductivity type; forming a deep trench in the foundation layer; and forming a deep layer having a second conductivity type by introducing material gas of the compound semiconductor while introducing dopant gas into an epitaxial growth equipment to cause epitaxial growth of the deep layer in the deep trench. A period in which a temperature in the epitaxial growth equipment is increased to a temperature of the epitaxial growth of the deep layer is defined as a temperature increasing period. In the forming the deep layer, the deep layer is further formed in a bottom corner portion of the deep trench by starting the introducing of the dopant gas during the temperature increasing period and starting the introducing of the material gas after the temperature increasing period.

Claim (Index 9):
A compound semiconductor device comprising:\n a semiconductor substrate that includes a foundation layer having a first conductivity type and formed of a compound semiconductor; and a deep layer that has a second conductivity type and is disposed in a deep trench provided in the foundation layer, the deep layer including a portion disposed at a bottom corner portion of the deep trench, wherein the portion of the deep layer disposed at the bottom corner portion of the deep trench has a highest second conductivity type impurity concentration in the deep layer.

Metadata:
- Claim Count in Document: 38.0
- Percentile: 95.0
- Lexical Diversity: 2.56667
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['16069927', '16069622', '16070061', '14387425', '15297261']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.925733176607325
- 35 USC 102 Novelty (BERT): 0.5312459973387589
- Combined Prediction Score: 0.8862844586804683
- Mean Citation Score: 310.667586
- Max Citation Score: 368.48938
- Similarity Product: 322.57859280736324

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test