PATENT CLAIM ANALYSIS

Application Number: 15987101
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2019-11
Patent Classification: ["257", "401000"]

Abstract:
A finFET structure includes an insulative cap over each gate in a vicinity of a first and second self-aligned contact (SAC) to source/drain regions thereof. The insulative cap has a bulbous upper insulative cap portion selectively grown to protect gate height loss during SAC opening formation. The bulbous upper insulative cap portion may be over just gates in the vicinity of the S/D regions, and optionally, over gates in the vicinity of a gate contact.

Claim (Index 17):
A fin-type field effect transistor (finFET) structure, comprising:\n a semiconductor fin on a substrate; a first source/drain (S/D) region defined in the semiconductor fin; a second source/drain (S/D) region defined in the semiconductor fin, the second S/D region spaced from the first source/drain region; a first, second and third metal gate extending across the semiconductor fin, each metal gate including a work function metal having a tungsten plug in a titanium nitride (TiN) barrier liner thereover, wherein the first metal gate extends across the semiconductor fin between the first source/drain region and the second source/drain region; a silicon nitride sidewall spacer about the first metal gate; a first self-aligned contact (SAC) extending to the first source/drain region between the first and second metal gate; a second self-aligned contact (SAC) extending to the second source/drain region between the first and third metal gate; a first silicon nitride (SiN) insulative cap over each metal gate in a vicinity of the first SAC and the second SAC, wherein the first (SiN) insulative cap has a selectively grown SiN bulbous upper insulative cap portion; a gate contact to the first metal gate at a distance from the first and second S/D regions; a second silicon nitride (SiN) insulative cap over the second metal gate in a vicinity of the gate contact; and a third silicon nitride (SiN) insulative cap over the third metal gate in the vicinity of the gate contact, wherein each of the second and third SiN insulative caps have a selectively grown SiN bulbous upper insulative cap portion.

Metadata:
- Claim Count in Document: 9.0
- Percentile: 93.0
- Lexical Diversity: 1.70833
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15638087', '15067540', '15878452', '14021594', '15387933']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.9190140865340942
- 35 USC 102 Novelty (BERT): 0.4942599257693074
- Combined Prediction Score: 0.8765386704576155
- Mean Citation Score: 238.01844
- Max Citation Score: 247.73738
- Similarity Product: 187.792557466476

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