PATENT CLAIM ANALYSIS

Application Number: 15904189
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-08
Patent Classification: ["257", "421000"]

Abstract:
The disclosed technology generally relates to magnetoresistive devices, and more particularly to a magnetic tunnel junction (MTJ) device formed in an interconnection structure, and to a method of integrating the (MTJ) device in the interconnection structure. According to an aspect, a device includes a first interconnection level including a first dielectric layer and a first set of conductive paths arranged in the first dielectric layer, a second interconnection level arranged on the first connection level and including a second dielectric layer and a second set of conductive paths arranged in the second dielectric layer, and a third interconnection level arranged on the second interconnection level and including a third dielectric layer and a third set of conductive paths arranged in the third dielectric layer. The device additionally includes a magnetic tunnel junction (MTJ) device including a bottom layer, a top layer and an MTJ structure arranged between the bottom layer and the top layer, wherein the bottom layer is connected to a bottom layer contact portion of the first set of conductive paths and the top layer is connected to a top layer contact portion of the second or third set of conductive paths. The device further includes a multi-level via extending through the second dielectric layer and the third dielectric layer, between a first via contact portion of the first set of conductive paths and a second via contact portion of the third set of conductive paths, wherein a height of the MTJ device corresponds to, or is less than, a height of the multi-level via.

Claim (Index 14):
A method of integrating a magnetic tunnel junction (MTJ) device in an interconnection structure, the method comprising:\n forming an MTJ device on a bottom layer contact portion of a first set of conductive paths of a first interconnection level, wherein the MTJ device comprises a bottom layer, a top layer and an MTJ structure arranged between the bottom layer and the top layer; filling, with a conductive material, a pattern in a dielectric layer portion arranged on a first portion of the first interconnection level, the pattern defining positions of a second set of conductive paths of a second interconnection level; filling, with a conductive material, a hole in a dielectric layer portion arranged on a second portion of the first interconnection level, the hole defining a position of a lower via portion of a multi-level via, wherein the hole is formed above a first via contact portion of the first set of conductive paths; polishing to reduce a thickness of the dielectric layer portions such that a topmost surface of the conductive material filling the pattern and the hole is arranged above or is substantially coplanar with a top surface of the top layer of the MTJ device; and forming a third set of conductive paths of a third interconnection level, the forming of the third set of conductive paths including forming an upper via portion on the lower via portion, the lower via portion and the upper via portion constituting the multi-level via.

Metadata:
- Claim Count in Document: 14.0
- Percentile: 88.0
- Lexical Diversity: 4.27692
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15063544', '15192068', '15247866', '14862173', '15387127']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.913044576101582
- 35 USC 102 Novelty (BERT): 0.481173145713601
- Combined Prediction Score: 0.8698574330627841
- Mean Citation Score: 194.427162
- Max Citation Score: 202.64548
- Similarity Product: 152.778930974226

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