PATENT CLAIM ANALYSIS

Application Number: 15989188
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-09
Patent Classification: ["257", "002000"]

Abstract:
An optical-readout synaptic device based on SiO x N y  and a preparation method thereof are provided. The device includes a surface plasmonic waveguide and a memristor; the surface plasmonic waveguide has a vertical three-layer structure that a second metal layer, a SiN x  dielectric layer and a first metal layer are successively arranged from top to bottom; the memristor has a vertical four-layer structure that a second electrode layer, a second resistive layer, a first resistive layer and a first electrode layer are successively arranged from top to bottom; the memristor is embedded in the surface plasmonic waveguide; and, the first resistive layer and the second resistive layer of the memristor serve as an optical signal transmission channel that is horizontally connected with the SiN x  dielectric layer of the surface plasmonic waveguide. The present invention realizes an optical-readout of synaptic weight and has incomparable advantages over a conventional electrical-readout synaptic device.

Claim (Index 10):
A method for preparing an optical-readout synaptic device based on SiO x N y , comprising steps of:\n (1), preparing a single crystal silicon wafer, then washing and drying the single crystal silicon wafer; (2), forming a patterned first metal layer on the single crystal silicon wafer through a physical vapor deposition method and a metal lift-off process; (3), through the physical vapor deposition method and photolithographing, obtaining a SiNx waveguide dielectric layer above the first metal layer, wherein a memristor window is reserved in the waveguide dielectric layer; (4), through photolithographing, obtaining four layers of a memristor inside a surface plasmonic waveguide, respectively a first electrode layer, a first resistive layer, a second resistive layer and a second electrode layer, wherein the first electrode layer is obtained through a direct current sputtering method; the first resistive layer is a SiO x N y  film obtained through a reactive magnetron sputtering method; the second resistive layer is a SiO x N y  film containing metal nanoparticles and is obtained through a co-sputtering method; and the second electrode layer is obtained through the direct current sputtering method; (5), through the physical vapor deposition method and the metal lift-off process, forming a second metal layer of the surface plasmonic waveguide; and (6), through a conventional RIE (Reactive Ion Etching) process, removing residual photoresist; then washing and drying, and obtaining the optical-readout synaptic device based on SiO x N y .

Metadata:
- Claim Count in Document: 7.0
- Percentile: 93.0
- Lexical Diversity: 2.34286
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14232521', '15511006', '15674206', '13629946', '14909933']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9058331201179288
- 35 USC 102 Novelty (BERT): 0.487630115486782
- Combined Prediction Score: 0.8640128196548142
- Mean Citation Score: 172.578324
- Max Citation Score: 181.94171
- Similarity Product: 121.82461380125046

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