PATENT CLAIM ANALYSIS

Application Number: 16007169
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2019-12
Patent Classification: ["257", "330000"]

Abstract:
A method for forming a semiconductor device is provided. A plurality of trenches are formed in the substrate. An isolation oxide layer is formed in the trenches and on the substrate. A shield polysilicon is deposited in the trenches and on the isolation oxide layer on the substrate. A first etching process is performed to remove a first portion of the shield polysilicon. A first removal process is performed to remove a first portion of the isolation oxide layer. A second etching process is performed to remove a second portion of the shield polysilicon. A second removal process is performed to remove a second portion of the isolation oxide layer. An inter-poly oxide layer is formed on the remaining shield polysilicon and the remaining isolation oxide layer, wherein the inter-poly oxide layer has a concave top surface.

Claim (Index 21):
A method for forming the semiconductor device of  claim 11 , comprising:\n providing a substrate; forming trenches in the substrate; forming an isolation oxide layer in the trenches and on the substrate; depositing a shield polysilicon in the trenches and on the isolation oxide layer on the substrate; performing a first etching process to remove a first portion of the shield polysilicon and expose a portion of the surface of the isolation oxide layer in the trenches; performing a first removal process to remove a first portion of the isolation oxide layer; performing a second etching process to remove a second portion of the shield polysilicon and expose another portion of the surface of the isolation oxide layer in the trenches; performing a second removal process to remove a second portion of the isolation oxide layer; and forming an inter-poly oxide layer on the remaining shield polysilicon and the remaining isolation oxide layer; wherein the inter-poly oxide layer has a concave top surface.

Metadata:
- Claim Count in Document: 14.0
- Percentile: 94.0
- Lexical Diversity: 3.34091
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15363138', '12551417', '11514743', '14083533', '15687881']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9191745027712984
- 35 USC 102 Novelty (BERT): 0.4817603283358689
- Combined Prediction Score: 0.8754330853277555
- Mean Citation Score: 235.220626
- Max Citation Score: 239.79797
- Similarity Product: 205.0324001369256

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