PATENT CLAIM ANALYSIS

Application Number: 16049849
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2020-02
Patent Classification: ["null", "null"]

Abstract:
Disclosed are methods of forming a semiconductor structure including a bulk semiconductor substrate and, on the substrate, a fin-type field effect transistor (FINFET) with a uniform channel length and a below-channel buried insulator. In the methods, a semiconductor fin is formed with a sacrificial semiconductor layer between lower and upper semiconductor layers. During processing, the sacrificial semiconductor layer is replaced with dielectric spacer material (i.e., a buried insulator). The buried insulator functions as an etch stop layer when etching source/drain recesses, ensuring that they have vertical sidewalls and, thereby ensuring that the channel region has a uniform length. The buried insulator also provides isolation between channel region and the substrate below and prevents dopant diffusion into the channel region from a punch-through stopper (if present). Optionally, the buried insulator is formed so as to contain an air-gap. Also disclosed are structures resulting from the methods.

Claim (Index 30):
The semiconductor structure of  claim 29 ,\n wherein the semiconductor fin has a first section with the buried insulator in a first device region and a second section without the buried insulator in a second device region, and wherein the semiconductor structure comprises:\n a first transistor with a first channel region and first source/drain regions in the first section, wherein the first channel region and the first source/drain regions are above and immediately adjacent to the buried insulator; and \n a second transistor with a second channel region and second source/drain regions in the second section, wherein the second channel region is longer than the first channel region and wherein the second channel region and the second source/drain regions are above and immediately adjacent to the punch through stopper.

Metadata:
- Claim Count in Document: 36.0
- Percentile: 95.0
- Lexical Diversity: 1.88636
- Patent Class: nan
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['15487636', '16046368', '15658835', '15632922', '15387933']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6113270538996962
- 35 USC 102 Novelty (BERT): 0.523004336164598
- Combined Prediction Score: 0.6024947821261863
- Mean Citation Score: 335.456856
- Max Citation Score: 345.0775
- Similarity Product: 278.07417268484835

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