PATENT CLAIM ANALYSIS

Application Number: 15895694
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-06
Patent Classification: ["257", "362000"]

Abstract:
An ESD cell includes an n+ buried layer (NBL) within a p-epi layer on a substrate. An outer deep trench isolation ring (outer DT ring) includes dielectric sidewalls having a deep n-type diffusion (DEEPN diffusion) ring (DEEPN ring) contacting the dielectric sidewall extending downward to the NBL. The DEEPN ring defines an enclosed p-epi region. A plurality of inner DT structures are within the enclosed p-epi region having dielectric sidewalls and DEEPN diffusions contacting the dielectric sidewalls extending downward from the topside surface to the NBL. The inner DT structures have a sufficiently small spacing with one another so that adjacent DEEPN diffusion regions overlap to form continuous wall of n-type material extending from a first side to a second side of the outer DT ring dividing the enclosed p-epi region into a first and second p-epi region. The first and second p-epi region are connected by the NBL.

Claim (Index 1):
A semiconductor device comprising:\n a substrate having a p-type epitaxial (p-epi) layer thereon; an n+ buried layer disposed within the p-epi layer and defining a buried portion of the p-epi layer below the n+ buried layer; an outer isolation ring including a first dielectric sidewall and a first deep n-type (DEEPN) diffusion region, wherein the first DEEPN diffusion region is arranged in a ring in the p-epi layer and contacts the first dielectric sidewall, and wherein the first DEEPN diffusion region extends downward from the p-epi layer to the n+ buried layer and encloses a portion of the p-epi layer to define an enclosed p-epi region; and a plurality of inner isolation structures within the enclosed p-epi region, each inner isolation structure including a second dielectric sidewall and a second DEEPN diffusion region that contacts the second dielectric sidewall and extends downward from the p-epi layer to the n+ buried layer; wherein the plurality of inner isolation structures are spaced so that adjacent ones of the second DEEPN diffusion regions overlap to form a continuous wall of n-type material extending from a first side to a second side of the outer isolation ring to divide the enclosed p-epi region into a first p-epi region and a second p-epi region, wherein the n+ buried layer in the first p-epi region connects to the n+ buried layer in the second p-epi region.

Metadata:
- Claim Count in Document: 21.0
- Percentile: 88.0
- Lexical Diversity: 2.23288
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14713785', '14713867', '14933661', '14974951', '15257243']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9225096408419388
- 35 USC 102 Novelty (BERT): 0.5630582278415277
- Combined Prediction Score: 0.8865644995418976
- Mean Citation Score: 310.7876500000001
- Max Citation Score: 463.06067
- Similarity Product: 360.960073885718

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