PATENT CLAIM ANALYSIS

Application Number: 15751795
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-08
Patent Classification: ["257", "432000"]

Abstract:
A germanium photodetector which reduces a dark current without degradation of a photocurrent includes: a silicon substrate; a lower clad layer formed on the silicon substrate; a core layer formed on the lower clad layer; a p-type silicon slab formed in a part of the core layer and doped with a p-type impurity ion; p++ silicon electrode sections that are highly-doped with a p-type impurity and act as an electrode; and germanium layers which absorb light. The germanium photodetector further includes an upper clad layer, an n-type germanium region doped with an n-type impurity above the germanium layer, and an electrode. According to the present invention, two germanium layers are provided on the p-type silicon slab so as to miniaturize the area of the surface of the individual germanium layer in contact with the p-type silicon slab, so that the dark current due to threading dislocation can be reduced.

Claim (Index 5):
The photodetector according to  claim 1 , wherein\n the p-type silicon slab includes, on both sides of the germanium layer, a p++ silicon electrode section highly-doped with a p-type impurity, and the electrode connected to the p-type silicon slab is in contact with the p++ silicon electrode section.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 88.0
- Lexical Diversity: 2.28169
- Patent Class: 257.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['10772724', '11177132', '15377294', '15724458', '14926916']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9109014450030232
- 35 USC 102 Novelty (BERT): 0.5012024762749696
- Combined Prediction Score: 0.869931548130218
- Mean Citation Score: 219.950876
- Max Citation Score: 237.12747
- Similarity Product: 178.2300869440466

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