PATENT CLAIM ANALYSIS

Application Number: 16055467
Application Type: Utility
Filing Date: 2018-08
Publication Date: 2018-11
Patent Classification: ["355", "027000"]

Abstract:
An exposure apparatus exposes a substrate with illumination light via a projection optical system, and includes a stage disposed below the projection optical system and holds the substrate; an encoder system in which one of a grating section and a head is provided at the stage and the other of the grating section and the head is provided at a frame member disposed above the stage, on a lower end side of the projection optical system, and which irradiates the grating section with a measurement beam via the head and measures positional information of the stage with a plurality of the heads that face the grating section; and a controller coupled to the encoder system, that controls a drive system based on positional information measured with the encoder system while compensating for measurement error of the encoder system related to measurement direction of the positional information by the heads.

Claim (Index 27):
An exposure method of exposing a substrate with an illumination light via a projection optical system, the method comprising:\n holding a mask with a first stage disposed above the projection optical system, the first stage being moved at least in a first direction within a predetermined plane orthogonal to an optical axis of the projection optical system; holding the substrate with a second stage disposed below the projection optical system, the second stage being moved at least in the first direction and a second direction orthogonal to each other within the predetermined plane; measuring positional information of the first stage and positional information of the second stage with a first measurement system and a second measurement system, the second measurement system having an encoder system in which one of a grating section and heads is provided at the second stage and the other of the grating section and the heads is provided at a frame member so that the other of the grating section and the heads faces the second stage, and which measures the positional information of the second stage with a plurality of the heads that face the grating section, the grating section having a reflective grating that is periodic in a direction parallel to the predetermined plane, and the frame member supporting the projection optical system; and controlling movement of the first and the second stages based on correction information for compensating for a measurement error of the encoder system and measurement information of the first and the second measurement systems so that, in an exposure operation of the substrate, scanning exposure in which the mask and the substrate are each moved relative to the illumination light is performed with the first direction serving as a scanning direction and also the measurement error is compensated, the measurement error occurring due to a difference between a position of a reference plane and a position of a grating surface of the grating section in a third direction orthogonal to the predetermined plane, the reference plane being a reference plane for position control or positioning of the second stage or a reference plane with which the substrate coincides in the exposure operation.

Metadata:
- Claim Count in Document: 102.0
- Percentile: 96.0
- Lexical Diversity: 2.32836
- Patent Class: 355.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15382825', '15384489', '14478801', '14570669', '14168299']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7914308289928963
- 35 USC 102 Novelty (BERT): 0.5620522004057983
- Combined Prediction Score: 0.7684929661341865
- Mean Citation Score: 419.473438
- Max Citation Score: 422.76736
- Similarity Product: 326.20664319137575

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