PATENT CLAIM ANALYSIS

Application Number: 16074971
Application Type: Utility
Filing Date: 2018-08
Publication Date: 2019-01
Patent Classification: ["355", "067000"]

Abstract:
A lithographic apparatus ( 10 ) and method for preventing exposure of a peripheral portion (P) of a substrate (S). An edge mask (M) has a radial concave edge (E) that extends over less than half a circle arch. The edge mask (M) is connected to a mask carrier ( 4 ) that circumnavigates the projection system ( 2 ) to adjust a tangential coordinate (Φ) and a radial coordinate (R) of the edge mask (M) with respect to the optical axis (A) of the projection system ( 2 ) for inserting the edge mask (M) at a variable distance into the beam of radiation (B). The tangential and radial positions (Φ,R) of the edge mask (M) are coordinated with a changing position (X,Y) of the substrate (S) to prevent exposure of the peripheral portion (P) of the substrate (S) during exposure of the target region (T).

Claim (Index 15):
A method for preventing exposure of a peripheral portion of a substrate, the method comprising\n projecting a beam of radiation onto a target region of the substrate; providing an edge mask for preventing exposure of the peripheral portion of the substrate, wherein the edge mask has a radial concave edge that extends over less than half a circle arch, wherein the edge mask is shaped to cause a projected shadow in the peripheral portion when the edge mask is inserted into a beam of radiation; providing a mask drive mechanism to adjust a tangential coordinate of the edge mask for inserting the edge mask from a variable direction into the beam of radiation, and to adjust a radial coordinate of the edge mask for inserting the edge mask at a variable distance into the beam of radiation; and controlling the mask drive mechanism to coordinate the tangential and radial positions of the edge mask with a changing position of the substrate to prevent exposure of the peripheral portion of the substrate during exposure of the target region.

Metadata:
- Claim Count in Document: 2.0
- Percentile: 96.0
- Lexical Diversity: 2.51316
- Patent Class: 355.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['11806265', '11429451', '10939966', '11783113', '11257081']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6828415917989067
- 35 USC 102 Novelty (BERT): 0.4630242819564521
- Combined Prediction Score: 0.6608598608146613
- Mean Citation Score: 175.620342
- Max Citation Score: 203.48677
- Similarity Product: 161.31025590943457

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