PATENT CLAIM ANALYSIS

Application Number: 16117893
Application Type: Utility
Filing Date: 2018-08
Publication Date: 2019-01
Patent Classification: ["355", "072000"]

Abstract:
In an exposure operation, as a second stage is moved in a direction parallel to a predetermined plane, another head different from a plurality of heads faces a grating section instead of one head of the plurality of heads, and positional information of the second stage is measured by multiple heads including remaining heads and the another head, the remaining heads excluding the one head of the plurality of heads, and correction information is acquired for the positional information obtained from the another head, based on the positional information obtained from the plurality of heads including the one head.

Claim (Index 35):
A method of making an exposure apparatus that exposes a substrate with an illumination light via a projection optical system and a liquid, the method comprising:\n providing a frame member that supports the projection optical system; providing a first detection system at the frame member, to be spaced apart from the projection optical system to one side in a first direction within a predetermined plane orthogonal to an optical axis of the projection optical system, the first detection system detecting a mark of the substrate; providing 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 first motor to drive the first stage; providing a liquid immersion member to surround a lens that is disposed closest to an image plane side, of a plurality of optical elements of the projection optical system, the liquid immersion member having a lower surface to which the substrate is placed facing, and locally forming a liquid immersion area with the liquid under the lens; providing a base member disposed below the liquid immersion member; providing a second stage system having a second stage and a third stage that are disposed on the base member and a second drive system that includes a second motor to drive the second and the third stages, the second stage having a holder to hold the substrate; providing a measurement system having a first encoder system that measures positional information of the first stage and a second encoder system that measures positional information of the second and the third stages, in the second encoder system one of a grating section and heads being provided at the second stage and the other of the grating section and the heads being provided at the frame member so that the other of the grating section and the heads is disposed on an outer side of the liquid immersion member with respect to the projection optical system, the second encoder system measuring 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 providing a controller coupled to the first detection system, the first and the second stage systems and the measurement system, the controller controlling the first and the second drive systems based on detection information of the first detection system and measurement information of the first and the second encoder systems so that, in an exposure operation of the substrate, alignment between the mask and the substrate and scanning exposure in which the mask and the substrate are each moved relative to the illumination light in the first direction are performed, wherein the controller controls the second drive system so that:\n the second stage is moved under the first detection system in order to detect the mark of the substrate with the first detection system; \n the second stage is moved from the one side to the other side in the first direction in order to cause the second stage to come close to the third stage placed facing the projection optical system; and \n the second and the third stages that have come close together are moved from the one side to the other side in the first direction with respect to the liquid immersion member in order to place the second stage to face the projection optical system instead of the third stage while substantially maintaining the liquid immersion area under the lens, the substrate being placed to face the lower surface of the liquid immersion member by the second stage that is placed to face the projection optical system instead of the third stage, \n the controller controls the second drive system so that the second stage is moved from the one side to the other side in the first direction with respect to the projection optical system while substantially maintaining the liquid immersion area between the second stage and the lens, in order to perform the scanning exposure via the projection optical system and the liquid of the liquid immersion area, from an area located on the one side in the first direction, of a plurality of areas on the substrate in the exposure operation, in the exposure operation, instead of one head of the plurality of heads, another head different from the plurality of heads faces the grating section due to relative movement between the grating section and the heads by movement of the second stage, and the positional information of the second stage is measured by multiple heads that include remaining heads and the another head, the remaining heads excluding the one head of the plurality of heads, and the controller acquires correction information for the positional information obtained from the another head, based on the positional information obtained from the plurality of heads including the one head.

Metadata:
- Claim Count in Document: 68.0
- Percentile: 96.0
- Lexical Diversity: 2.30435
- Patent Class: 355.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['16114498', '15961061', '14067110', '14067503', '15216840']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8049402904008854
- 35 USC 102 Novelty (BERT): 0.5806187124863375
- Combined Prediction Score: 0.7825081326094306
- Mean Citation Score: 466.769574
- Max Citation Score: 481.55646
- Similarity Product: 466.7908322221328

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