PATENT CLAIM ANALYSIS

Application Number: 16188237
Application Type: Utility
Filing Date: 2018-11
Publication Date: 2019-03
Patent Classification: ["257", "506000"]

Abstract:
The present invention provides a method of forming a semiconductor device. First, a substrate is provided and an STI is forming in the substrate to define a plurality of active regions. Then a first etching process is performed to form a bit line contact opening, which is corresponding to one of the active regions. A second etching process is performed to remove a part of the active region and its adjacent STI so a top surface of active region is higher than a top surface of the STI. Next, a bit line contact is formed in the opening. The present invention further provides a semiconductor structure.

Claim (Index 1):
A method of forming a semiconductor memory device, comprising:\n providing a substrate, wherein a shallow trench isolation (STI) is formed in the substrate to define a plurality of active regions; performing a first etching process to form a bit line contact opening, wherein the bit line contact opening corresponds to one of the active regions, and the bit line contact opening exposes said one active region and the STI surrounds the active region; performing a second etching process to remove a portion of the STI in the bit line contact opening, making a top surface of the active region in the bit line contact opening being exposed and higher than a top surface of the STI in the bit line contact opening; and forming a bit line contact structure on the substrate, wherein the bit line contact structure is disposed in a part of the bit line contact opening and contacts the active region in the bit line contact opening.

Metadata:
- Claim Count in Document: 12.0
- Percentile: 98.0
- Lexical Diversity: 2.09091
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15472295', '15856089', '14587472', '12292819', '11193788']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9140601663947152
- 35 USC 102 Novelty (BERT): 0.4793917142133463
- Combined Prediction Score: 0.8705933211765783
- Mean Citation Score: 194.16505
- Max Citation Score: 211.98305
- Similarity Product: 167.88512893010378

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