PATENT CLAIM ANALYSIS

Application Number: 15975861
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-09
Patent Classification: ["257", "005000"]

Abstract:
A three-dimensional semiconductor memory device includes a peripheral circuit structure on a substrate, a horizontal active layer on the peripheral circuit structure, stacks provided on the horizontal active layer to include a plurality of electrodes, a vertical structure vertically penetrating the stacks, a common source region between ones of the stacks and in the horizontal active layer, and pick-up regions in the horizontal active layer. The horizontal active layer includes first, second, and third active semiconductor layers sequentially stacked on the peripheral circuit structure. The first and third active semiconductor layers are doped to have high and low impurity concentrations, respectively, and the second active semiconductor layer includes an impurity diffusion restraining material.

Claim (Index 1):
A method of fabricating a three-dimensional semiconductor memory device, comprising:\n forming a peripheral circuit device and a peripheral interconnection structure on a substrate; forming a lower mold insulating layer to cover the peripheral circuit device and the peripheral interconnection structure; forming a horizontal active layer on the lower mold insulating layer, the horizontal active layer comprising first, second, and third active semiconductor layers sequentially stacked on the lower mold insulating layer; and forming a cell array structure on the horizontal active layer, wherein the first active semiconductor layer is doped with impurities to have a first conductivity type and a first concentration, the second active semiconductor layer comprises an impurity diffusion restraining material inhibiting diffusion of the impurities in the first active semiconductor layer into the second active semiconductor layer, and the third active semiconductor layer is doped with impurities to have the first conductivity type and a second concentration different from the first concentration, or is in an undoped state.

Metadata:
- Claim Count in Document: 19.0
- Percentile: 93.0
- Lexical Diversity: 2.23214
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14708477', '15208669', '14960776', '15251510', '15426081']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9212527650349313
- 35 USC 102 Novelty (BERT): 0.563021882575449
- Combined Prediction Score: 0.8854296767889831
- Mean Citation Score: 302.2074360000001
- Max Citation Score: 444.85373
- Similarity Product: 393.72532354397

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

Dataset: test