PATENT CLAIM ANALYSIS

Application Number: 15757672
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2019-01
Patent Classification: ["438", "050000"]

Abstract:
A semiconductor device production method includes performing trench etching to form a trench in a thickness direction of a semiconductor layer so that both of a first pattern portion and a second pattern portion whose side walls face each other across the trench are formed. In the trench etching, the semiconductor layer is etched and removed while a protective film is formed on a surface of the semiconductor layer, and the trench etching is performed so that the first pattern portion and the second pattern portion are configured to have a same potential or a same temperature during the trench etching.

Claim (Index 3):
The semiconductor device production method according to  claim 2 , wherein\n in the trench etching, a semiconductor substrate in which a surface of the semiconductor layer opposite to a surface on a starting side of the trench etching is joined to a support substrate through an insulating film is used, and in the semiconductor substrate, a recessed portion is formed in a surface of the semiconductor layer adjacent to the support substrate or a surface of the support substrate adjacent to semiconductor layer at a portion of the semiconductor layer corresponding to a trench forming portion of the semiconductor layer, and the semiconductor layer and the support substrate are separated from each other.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 90.0
- Lexical Diversity: 1.94444
- Patent Class: 438.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15180484', '12883752', '14886281', '14165120', '13944562']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8701974790258074
- 35 USC 102 Novelty (BERT): 0.4797225434754313
- Combined Prediction Score: 0.8311499854707698
- Mean Citation Score: 200.823826
- Max Citation Score: 208.38054
- Similarity Product: 166.65014470559836

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