PATENT CLAIM ANALYSIS

Application Number: 15873289
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2019-05
Patent Classification: ["257", "292000"]

Abstract:
A single photon avalanche diode (SPAD) image sensor is disclosed. The SPAD image sensor include: a substrate of a first conductivity type, the substrate having a front surface and a back surface; a deep trench isolation (DTI) extending from the front surface toward the back surface of the substrate, the DTI having a first surface and a second surface opposite to the first surface, the first surface being level with the front surface of the substrate; an epitaxial layer of a second conductivity type opposite to the first conductivity type, the epitaxial layer surrounding sidewalls and the second surface of the DTI; and an implant region of the first conductivity type extending from the front surface to the back surface of the substrate. An associated method for fabricating the SPAD image sensor is also disclosed.

Claim (Index 10):
A single photon avalanche diode (SPAD) image sensor, comprising:\n a first epitaxial layer of a first conductivity type, the first epitaxial layer having a front surface and a back surface; a second epitaxial layer of the first conductivity type, the second epitaxial layer having a front surface and a back surface, the second epitaxial layer being formed over the first epitaxial layer with the front surface of the second epitaxial layer facing the back surface of the first epitaxial layer, a dopant concentration of the first conductivity type of the first epitaxial layer is higher than a dopant concentration of the first conductivity type of the second epitaxial layer; a deep trench isolation (DTI) extending from the front surface of the first epitaxial layer toward the back surface of the second epitaxial layer, the DTI having a first surface and a second surface opposite to the first surface, the first surface being level with the front surface of the first epitaxial layer; an epitaxial layer of a second conductivity type opposite to the first conductivity type, the epitaxial layer surrounding sidewalls and the second surface of the DTI; and an implant region of the first conductivity type extending from the front surface of the first epitaxial layer to the back surface of the second epitaxial layer and reaching the back surface of the second epitaxial layer.

Metadata:
- Claim Count in Document: 53.0
- Percentile: 86.0
- Lexical Diversity: 2.67857
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15872712', '14980386', '15713477', '15713520', '13821524']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.925770870844028
- 35 USC 102 Novelty (BERT): 0.5062660130440354
- Combined Prediction Score: 0.8838203850640287
- Mean Citation Score: 235.46688000000003
- Max Citation Score: 304.0208
- Similarity Product: 258.7474903909683

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