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 1):
An exposure apparatus that exposes a substrate with an illumination light via a projection optical system, the apparatus comprising:\n a frame member that supports the projection optical system; a first stage system that has a first stage and a first drive system, and moves the first stage at least in a first direction within a predetermined plane orthogonal to an optical axis of the projection optical system, the first stage being disposed above the projection optical system and holding a mask illuminated with the illumination light, and the first drive system including a first motor to drive the first stage; a second stage system that has a second stage and a second drive system, and moves the second stage at least in the first direction and a second direction orthogonal to each other within the predetermined plane, the second stage being disposed below the projection optical system and holding the substrate, and the second drive system including a second motor to drive the second stage; a first measurement system and a second measurement system that measure positional information of the first stage and positional information of the second stage, respectively, 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 the 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, and the grating section having a reflective grating that is periodic in a direction parallel to the predetermined plane; and a controller coupled to the first and the second stage systems and the first and the second measurement systems, wherein the controller controls the first and the second drive systems based on measurement information of the first and the second measurement systems and correction information for compensating for a measurement error of the encoder system related to a measurement direction of the positional information by the heads 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 relative motion between the heads and the grating section in a different direction that is different from the measurement direction.

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): 0.7916364354266321
- 35 USC 102 Novelty (BERT): 0.561517077079442
- Combined Prediction Score: 0.7686244995919131
- Mean Citation Score: 419.473438
- Max Citation Score: 422.76736
- Similarity Product: 320.3913926315308

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