PATENT CLAIM ANALYSIS

Application Number: 15980033
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-11
Patent Classification: ["257", "773000"]

Abstract:
A semiconductor device and its manufacturing method are presented. The manufacturing method includes: providing a semiconductor structure comprising: an interlayer dielectric layer, a first metal layer surrounded by the interlayer dielectric layer, and a semiconductor layer on the interlayer dielectric layer; etching the semiconductor layer to form an opening exposing the interlayer dielectric layer, wherein the opening comprises a first opening and a second opening on the first opening; forming an insulation layer on the semiconductor structure; etching the insulation layer and the interlayer dielectric layer at the bottom of the first opening to form a groove exposing a portion of the first metal layer; forming a second metal layer on the insulation layer and on the bottom and a side surface of the groove; and patterning the second metal layer. The second metal layer in this inventive concept can be removed more completely than conventional methods.

Claim (Index 3):
The method of  claim 1 , wherein an angle between a side surface of the first opening and the bottom of the first opening is an obtuse angle, and an angle between a side surface of the second opening and a flat surface of the staircase pattern is an obtuse angle.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 93.0
- Lexical Diversity: 2.71186
- Patent Class: 257.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['13314627', '14747316', '13488478', '13069848', '15824776']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9268938416701736
- 35 USC 102 Novelty (BERT): 0.4985893031784844
- Combined Prediction Score: 0.8840633878210047
- Mean Citation Score: 233.23172600000004
- Max Citation Score: 245.50551
- Similarity Product: 179.3766711865014

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