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 8):
The apparatus of  claim 1 ,\n wherein the pellicle frame comprises: opposing walls having bottom surfaces and top surfaces opposite the bottom surfaces, wherein the bottom surfaces are adhered to the planar surface of the photomask structure, wherein the top surfaces are adhered to the pellicle, and wherein the apparatus further comprises studs layered between any of the following to achieve a specific tilt angle for the pellicle:\n between at least one bottom surface of at least one of the opposing walls and the planar surface of the photomask structure; and \n between at least one top surface of at least one of the opposing walls and the pellicle.

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): 0.7880021171292215
- 35 USC 102 Novelty (BERT): 0.495479134415747
- Combined Prediction Score: 0.7587498188578741
- Mean Citation Score: 238.06053000000003
- Max Citation Score: 257.87595
- Similarity Product: 193.6501562027514

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