PATENT CLAIM ANALYSIS

Application Number: 15966989
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-12
Patent Classification: ["257", "316000"]

Abstract:
3-d flash memory cells and methods of manufacture are described. The devices and methods recess a compound floating gate in between the silicon oxide slabs which reduces the quantum probability of electron tunneling between vertically adjacent storage cells. The devices and methods further include a high work function nanocrystalline metal in the compound floating gate. A polysilicon buffer layer forms a portion of the compound floating gate. The polysilicon buffer layer allows the high work function nanocrystalline metal to be selectively deposited. The polysilicon buffer layer further protects the high work function nanocrystalline metal from oxidation with the gate oxide subsequently formed on the other side.

Claim (Index 1):
A 3-d flash memory cell, the 3-d flash memory cell comprising:\n a stack of silicon oxide slabs, wherein a tungsten slab selected from a plurality of tungsten slabs is disposed between each neighboring pair of vertically neighboring silicon oxide slabs in a memory hole of the 3-d flash memory cell, wherein the plurality of tungsten slabs are recessed relative to the silicon oxide slabs away from the memory hole to form a plurality of recesses; a plurality of compound floating gates each comprising a polysilicon buffer portion and a high work function metal portion, wherein the plurality of compound floating gates are disposed entirely within the plurality of recesses, wherein the stack of silicon oxide slabs extends beyond the plurality of compound floating gates into the memory hole; and a high-k dielectric liner disposed between the stack of silicon oxide slabs and the plurality of tungsten slabs, wherein the high-k dielectric liner is further disposed between the plurality of compound floating gates and the tungsten slabs.

Metadata:
- Claim Count in Document: 7.0
- Percentile: 91.0
- Lexical Diversity: 1.86667
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15891126', '15882454', '15332910', '14452220', '14222418']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.950782871311713
- 35 USC 102 Novelty (BERT): 0.5230626026584739
- Combined Prediction Score: 0.9080108444463892
- Mean Citation Score: 316.724268
- Max Citation Score: 376.8563
- Similarity Product: 270.94019798286547

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

Dataset: test