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 20):
A device comprising:\n a package substrate with a ball grid array (BGA)-balls; a micro bump (\u03bc-bump) connected to an upper surface of the package substrate; a copper (Cu) pillar over the \u03bc-bump; an under bump metallization (UBM) layer on the Cu pillar; a silicon nitride (SiN) spacer along each sidewall of the UBM layer and the Cu pillar; an epoxy layer adjacent to each SiN spacer; a magnetic shielding layer under a second epoxy layer and along sidewalls of the second epoxy layer; an under-fill layer between a second magnetic shielding layer and the package substrate; a polymer layer over the epoxy layer, the nitride layer and portions of the UBM layer and on sidewalls of the UBM layer; a passivation stack over the polymer layer; an aluminum (Al) pad over portions of the passivation stack and the UBM layer; and a wafer over the passivation stack and the Al pad, wherein the second epoxy layer is formed over the wafer, and the second magnetic shielding layer is formed over the epoxy layer and along sidewalls of the epoxy layer, the wafer, the passivation stack and the polymer layer.

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): 0.9022666878615192
- 35 USC 102 Novelty (BERT): 0.5080245981919425
- Combined Prediction Score: 0.8628424788945614
- Mean Citation Score: 231.833634
- Max Citation Score: 260.98712
- Similarity Product: 190.406483434906

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test