PATENT CLAIM ANALYSIS

Application Number: 16018921
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2019-04
Patent Classification: ["438", "197000"]

Abstract:
Methods are provided for fabricating semiconductor fins having uniform profiles. For example, a method includes forming semiconductor fins on a substrate, including a first semiconductor fin disposed in a first device region, and a second semiconductor fin disposed in a second device region. The first and second semiconductor fins are formed of different types of semiconductor material, and are initially formed to have different widths and heights. A semiconductor fin trimming process is performed, which is selective to the semiconductor material of the second semiconductor fin, so that the fin trimming process results in the formation of semiconductor fins having substantially equal heights and equal widths across the device regions as a result of the fin trimming process. The semiconductor fins in different device regions are initially formed with non-uniform profiles (e.g., differential heights and widths) to compensate for micro-loading and etch rate variations during the fin trimming process.

Claim (Index 1):
A method for fabricating a semiconductor device, comprising:\n forming a plurality of semiconductor fins on a substrate, wherein the plurality of semiconductor fins comprises a first semiconductor fin disposed in a first device region, and a second semiconductor fin disposed in a second device region, wherein the first and second semiconductor fins are formed of different types of semiconductor material, wherein the different types of semiconductor material comprise a first epitaxial semiconductor material and a second epitaxial semiconductor material and further wherein the first semiconductor fin and the second semiconductor fin are formed to have different widths and heights; and performing a semiconductor fin trimming process, which is selective to the semiconductor material of the second semiconductor fin, to trim the first and second semiconductor fins to have substantially a same width and substantially a same height, wherein prior to performing the semiconductor fin trimming process, the first semiconductor fin comprises a width W 1  and a height H 1 , and the second semiconductor fin comprises a width W 2  and a height H 2 , wherein W 1  is less than W 2 , and wherein H 1  is less than H 2 ; and wherein performing the semiconductor fin trimming process comprises selectively etching the first epitaxial semiconductor material to trim the first and second semiconductor fins to have substantially a same width W 3  and substantially a same height H 3 , wherein W 3  is less than W 2  and W 1 , and wherein H 3  is less than H 2  and H 1 .

Metadata:
- Claim Count in Document: 36.0
- Percentile: 94.0
- Lexical Diversity: 2.32857
- Patent Class: 438.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15786744', '15807751', '15282272', '15789217', '15430766']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8536253653051902
- 35 USC 102 Novelty (BERT): 0.5972517856748399
- Combined Prediction Score: 0.8279880073421553
- Mean Citation Score: 353.76072200000016
- Max Citation Score: 495.95676
- Similarity Product: 476.2929203456212

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