PATENT CLAIM ANALYSIS

Application Number: 15902544
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2019-08
Patent Classification: ["430", "005000"]

Abstract:
Disclosed is a photolithography (e.g., extreme ultraviolet (EUV) photolithography) system that incorporates a photomask-pellicle apparatus with an angled pellicle. The apparatus includes a photomask structure and a pellicle structure that is mounted on the photomask structure. The pellicle is essentially transparent to a given-type radiation (e.g., EUV radiation), is essentially reflective to out-of-band (OOB) radiation, and is positioned at an angle relative to the photomask. When radiation is directed toward the photomask-pellicle apparatus during a photolithographic exposure process, beams that are reflected and diffracted off of the patterned surface of the photomask structure are directed toward a target semiconductor wafer and beams that are reflected and diffracted off of the pellicle are directed away from the target semiconductor wafer. Aiming the OOB radiation away from the target semiconductor wafer improves imaging quality by minimizing the negative impact of OOB radiation. Also disclosed is an associated photolithography method.

Claim (Index 5):
The apparatus of  claim 1 , the first-type radiation has a wavelength of 13.5 nm and the second-type radiation has a wavelength that is greater than 13.5 nm.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 88.0
- Lexical Diversity: 2.27397
- Patent Class: 430.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['09784800', '11753496', '15155444', '11754225', '13916946']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.78647415062302
- 35 USC 102 Novelty (BERT): 0.5061536206447245
- Combined Prediction Score: 0.7584420976251904
- Mean Citation Score: 238.06053000000003
- Max Citation Score: 257.87595
- Similarity Product: 162.57817200441954

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

Dataset: test