PATENT CLAIM ANALYSIS

Application Number: 15937162
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-12
Patent Classification: ["257", "292000"]

Abstract:
In a solid-state imaging element having two or more photodiodes stacked in a vertical direction in each of pixels, electrons are prevented from moving between the respective photodiodes of the pixels adjacent to each other. The solid-state imaging element is formed by joining together a back surface of a first semiconductor wafer including one of the photodiodes and a wiring layer and a back surface of a second semiconductor wafer including another of the photodiodes and a wiring layer. By forming a first isolation region extending through a first semiconductor substrate forming the first semiconductor wafer and a second isolation region extending through a second semiconductor substrate forming the second semiconductor wafer, the photodiodes of one of the pixels are isolated from another of the pixels.

Claim (Index 9):
A method of manufacturing a solid-state imaging element including a plurality of pixels arranged in plan view, the method comprising the steps of:\n (a) providing a first semiconductor substrate having a first main surface and a first back surface opposite to the first main surface and including a plurality of first light receiving elements formed in the first main surface and a first isolation region formed in the first main surface to isolate the first light receiving elements from each other; (b) providing a second semiconductor substrate having a second main surface and a second back surface opposite to the second main surface and including a plurality of second light receiving elements formed in the second main surface and a second isolation region formed in the second main surface to isolate the second light receiving elements from each other; (c) polishing the first back surface of the first semiconductor substrate to expose the first isolation region; (d) polishing the second back surface of the second semiconductor substrate to expose the second isolation region; (e) after the step (c), forming a second insulating film which is in contact with the first back surface of the first semiconductor substrate and with the first isolation region and covers the first back surface; (f) after the step (d), forming a third insulating film which is in contact with the second back surface of the second semiconductor substrate and with the second isolation region and covers the second back surface; and (g) causing the first back surface and the second back surface to face each other and joining together the first semiconductor substrate and the second semiconductor substrate to form a first insulating film including the second insulating film and the third insulating film, wherein each of the pixels includes the second light receiving element and the first light receiving element over the second light receiving element.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 90.0
- Lexical Diversity: 2.33929
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14260118', '13196127', '14895735', '15065437', '15380461']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9225693986600856
- 35 USC 102 Novelty (BERT): 0.4904268355315854
- Combined Prediction Score: 0.8793551423472356
- Mean Citation Score: 258.6192
- Max Citation Score: 268.90582
- Similarity Product: 238.15946316555736

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