PATENT CLAIM ANALYSIS

Application Number: 15939647
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2019-05
Patent Classification: ["257", "369000"]

Abstract:
A method of fabricating a fin-like field effect transistor (FinFET) device includes providing a semiconductor substrate having a region for forming p-type metal-oxide-semiconductor (PMOS) devices and a region for forming n-type metal-oxide-semiconductor (PMOS) devices, forming fin structures in both regions of the substrate separated by isolation features, first forming source/drain (S/D) features in the PMOS region, and subsequently forming S/D features in the NMOS region. First forming the PMOS S/D features and then forming the NMOS S/D features results in a greater extent of loss of isolation features in the PMOS region than in the NMOS region.

Claim (Index 9):
A method, comprising:\n providing a first fin structure on a semiconductor substrate in a first region for forming p-type metal-oxide-semiconductor (PMOS) devices and a second fin structure on the semiconductor substrate in a second region for forming n-type metal-oxide-semiconductor (NMOS) devices, wherein the first fin structure and the second fin structure are separated by isolation features; forming a first hard mask layer over the first fin structure, the second fin structure, and the isolation features; forming a first patterned etch mask layer over the second region thereby exposing the first region; removing a portion of the first fin structure to form a recessed first fin structure; forming a first source/drain feature on a top surface of the recessed first fin structure; removing the first hard mask layer from the second fin structure and the isolation features surrounding it; subsequent to removing the first hard mask layer, forming a second hard mask layer over the first source/drain feature, the second fin structure, and the isolation features; subsequent to forming the second hard mask layer, forming a second patterned etch mask over the first region thereby exposing the second region; removing a portion of the second fin structure to form a recessed second fin structure; forming a second source/drain feature on a top surface of the recessed second fin structure; and subsequent to forming the second source/drain feature, removing the second hard mask layer from the first fin structure and the isolation features surrounding it.

Metadata:
- Claim Count in Document: 19.0
- Percentile: 90.0
- Lexical Diversity: 2.15686
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14254072', '15401867', '15805892', '14557960', '15130370']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.918309342968782
- 35 USC 102 Novelty (BERT): 0.4799125289802682
- Combined Prediction Score: 0.8744696615699308
- Mean Citation Score: 228.51727
- Max Citation Score: 234.17592
- Similarity Product: 199.85678296628947

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test