PATENT CLAIM ANALYSIS

Application Number: 15938066
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2019-02
Patent Classification: ["257", "432000"]

Abstract:
Some aspects of the present disclosure relate to an image sensor that includes a semiconductor substrate having a frontside and a backside. A photodetector is arranged in the semiconductor substrate between the frontside and the backside. An interconnect structure is arranged beneath the frontside of the semiconductor substrate such that the frontside of the semiconductor substrate is arranged between the interconnect structure and the backside of the semiconductor substrate. A lower ring structure extends into the backside of the semiconductor substrate and laterally surrounds the photodetector. A grating structure, which is surrounded by the lower ring structure, extends from the backside of the substrate to a position within the photodetector.

Claim (Index 19):
A method, comprising:\n receiving a semiconductor substrate; forming a photodetector in a frontside of the substrate; forming an interconnect structure over the photodetector and over the frontside of the substrate; bonding a carrier substrate over the interconnect structure; thinning a backside of the semiconductor substrate, the backside being furthest from the interconnect structure; forming a series of trenches in the thinned backside of the semiconductor substrate; forming a dielectric layer in the series of trenches; and planarizing the dielectric layer to leave the dielectric layer with a planarized top surface, wherein planarizing the dielectric layer separates the dielectric layer to leave a ring-shaped dielectric layer in the substrate and to leave wall or pillar dielectric structures which are laterally surrounded by the ring-shaped dielectric layer, the wall or pillar dielectric structures disposed over the photodetector.

Metadata:
- Claim Count in Document: 23.0
- Percentile: 90.0
- Lexical Diversity: 2.54348
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14935861', '14099481', '15016502', '15143727', '14029402']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9163218886180232
- 35 USC 102 Novelty (BERT): 0.4862330758182918
- Combined Prediction Score: 0.8733130073380502
- Mean Citation Score: 219.789882
- Max Citation Score: 246.9544
- Similarity Product: 207.9089347158432

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