PATENT CLAIM ANALYSIS

Application Number: 16174652
Application Type: Utility
Filing Date: 2018-10
Publication Date: 2019-02
Patent Classification: ["356", "401000"]

Abstract:
Correction information is acquired for compensating for a measurement error of a second encoder system that occurs due to a displacement between four sections of a scale member of the second encoder system, based on measurement information of the second encoder system obtained in a fifth area in which four heads of the second encoder system that are provided on a second stage, which holds a substrate, respectively face the four sections of the scale member.

Claim (Index 1):
An exposure apparatus that exposes a substrate with an illumination light via a projection optical system, the apparatus comprising:\n a body structure having a metrology frame to support the projection optical system; a first stage system having a first stage and a first drive 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 motor to drive the first stage; a first encoder system that measures positional information of the first stage; a second stage system having a second stage and a second drive system, the second stage being disposed below the projection optical system and having a holder to hold the substrate, and the second drive system including a planar motor to drive the second stage; a second encoder system that has four heads provided at the second stage and measures positional information of the second stage, each of the four heads irradiating a scale member having four sections with a measurement beam from below the scale member, and a reflective two-dimensional grating being formed in each of the four sections; and a controller coupled to the first and the second stage systems and the first and the second encoder systems, the controller controlling the first and the second drive systems based on measurement information of the first and the second encoder systems so that scanning exposure in which the mask and the substrate are each moved relative to the illumination light is performed in an exposure operation of the substrate, wherein the scale member is supported in a suspended manner by the metrology frame so that the projection optical system is located in an opening substantially surrounded by the four sections, wherein a movement area where the second stage is moved in the exposure operation includes a first area, a second area, a third area, a fourth area and a fifth area,\n in the first area, three heads of the four heads excluding a first head respectively facing three sections of the four sections of the scale member excluding a first section, \n in the second area, three heads of the four heads excluding a second head different from the first head respectively facing three sections of the four sections excluding a second section different from the first section, \n in the third area, three heads of the four heads excluding a third head different from the first and the second heads respectively facing three sections of the four sections excluding a third section different from the first and the second sections, \n in the fourth area, three heads of the four heads excluding a fourth head different from the first, the second and the third heads respectively facing three sections of the four sections excluding a fourth section different from the first, the second and the third sections, and \n in the fifth area, the four heads respectively facing the four sections, and \n wherein the controller acquires correction information for compensating for a measurement error of the second encoder system that occurs due to a displacement between the four sections, based on measurement information of the second encoder system in the fifth area.

Metadata:
- Claim Count in Document: 62.0
- Percentile: 97.0
- Lexical Diversity: 1.95122
- Patent Class: 356.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['16058255', '16056875', '14462668', '15878545', '15269030']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7216402311993153
- 35 USC 102 Novelty (BERT): 0.5362977812915397
- Combined Prediction Score: 0.7031059862085377
- Mean Citation Score: 360.961798
- Max Citation Score: 371.67462
- Similarity Product: 343.96617634245155

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