PATENT CLAIM ANALYSIS

Application Number: 15864741
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2019-07
Patent Classification: ["257", "422000"]

Abstract:
Methods of magnetically shielding a perpendicular STT-MRAM structure on all six sides within a flip-chip package and the resulting devices are provided. Embodiments include forming a passivation stack over an upper surface of a wafer and outer portions of an Al pad; forming a polymer layer over the passivation stack; forming a UBM layer over the Al pad, portions of the polymer layer and along sidewalls of the polymer layer; forming a T-shaped Cu pillar over the UBM layer; forming a μ-bump over the T-shaped Cu pillar; dicing the wafer into a plurality of dies; forming an epoxy layer over a bottom surface of each die; forming a magnetic shielding layer over the epoxy layer and along sidewalls of each die, the epoxy layer, the passivation stack and the polymer layer; and connecting the μ-bump to a package substrate with a BGA balls.

Claim (Index 1):
A method comprising:\n forming a passivation stack over an upper surface of a wafer and outer portions of an aluminum (Al) pad; forming a polymer layer over the passivation stack; forming an under bump metallization (UBM) layer over the Al pad, portions of the polymer layer and along sidewalls of the polymer layer; forming a T-shaped copper (Cu) pillar over the UBM layer; forming a micro bump (\u03bc-bump) over the T-shaped Cu pillar; dicing the wafer into a plurality of dies; forming an epoxy layer over a bottom surface of each die; forming a magnetic shielding layer over the epoxy layer and along sidewalls of each die, the epoxy layer, the passivation stack and the polymer layer; connecting the \u03bc-bump to a package substrate with a ball grid array (BGA)-balls; forming a second magnetic shielding layer over the passivation stack prior to forming the polymer layer; and forming the polymer layer over the second magnetic shielding layer and portions of the Al pad and along sidewalls of the second magnetic shielding layer and the passivation stack.

Metadata:
- Claim Count in Document: 24.0
- Percentile: 86.0
- Lexical Diversity: 2.51613
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15080562', '13085759', '15241100', '10726042', '13901311']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.901887690744562
- 35 USC 102 Novelty (BERT): 0.5131173575377856
- Combined Prediction Score: 0.8630106574238843
- Mean Citation Score: 231.833634
- Max Citation Score: 260.98712
- Similarity Product: 174.97608502841473

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