摘要:
An exposure apparatus for exposing a substrate by projecting a pattern image onto the substrate through a liquid in a liquid immersion area formed locally on the substrate, the exposure apparatus comprising: a projection optical system for projecting the pattern image onto the substrate; a substrate stage having a substrate holder for holding the substrate and which is movable while holding the substrate on the substrate holder; a first detecting system for detecting an alignment mark on the substrate held by the substrate stage not through the liquid; and a second detecting system for detecting a projection position of the image by using a reference provided on the substrate stage through the liquid, wherein: the reference is covered with a light-transmissive material; and the exposure apparatus is configured such that the projection position of the pattern image is detected through the liquid by using the second detecting system and the reference when the substrate or a dummy substrate is arranged on the substrate holder.
摘要:
An exposure apparatus EXS forms an immersion area AR2 of a liquid LQ on the side of the image plane of a projection optical system PL and performs exposure of a substrate P via the projection optical system PL and the liquid LQ of the immersion region AR2. The exposure apparatus EXS has an optical cleaning unit (80) which irradiates a predetermined irradiation light Lu, having an optical cleaning effect, onto, for example, the upper surface (31) of the substrate stage PST which makes contact with the liquid LQ for forming the immersion area AR2. Thus, it is possible to prevent deterioration of the exposure accuracy and measurement accuracy due to pollution of the member in contact with the liquid in the immersion region.
摘要:
During the drive of a stage (WST), positional information in a movement plane of the stage (WST) is measured by three encoders (Enc1 Enc2, and Enc3) that include at least one each of an X encoder and a Y encoder of an encoder system, and a controller switches the encoders used for a measurement of positional information of the stage (WST) in the movement plane from the encoders (Enc1 Enc2, and Enc3) to encoders (Enc4, Enc2, and Enc3) so that the position of the stage (WST) in the movement plane is maintained before and after the switching. Therefore, although the switching of the encoders used for controlling the position of the stage is performed, the position of the stage in the movement plane is maintained before and after the switching, and a correct linkage becomes possible.
摘要:
Positional information of a movable body (RST) in a Y-axis direction is measured using an interferometer (16y) and an encoder ((24A, 26A 1 ), (24B, 26B 1 )) whose short-term stability of measurement values excels when compared with the interferometer, and based on the measurement results, a predetermined calibration operation for obtaining correction information for correcting measurement values of the encoder is performed. Accordingly, by using measurement values of the interferometer, correction information for correcting the measurement values of the encoder whose short-term stability of the measurement values excels the interferometer is obtained. Then, based on the measurement values of the encoder and the correction information, the movable body is driven in the Y-axis direction with good precision.
摘要:
A liquid immersion member (4A) forms, in an exposure apparatus (EX1), liquid immersion space (LS) through which exposure light (EL) emitted from an optical member (3) passes, the liquid immersion member includes: a first member (41) that is disposed at at least part of a space around the optical member and that includes a first lower surface (4111) facing an object (5, 51, 52, 6, 61) which is movable below the optical member; and a movable second member (42) that includes a second lower surface (4211) which is disposed at outer side than the first lower surface viewed from optical axis (AX) of the optical member and which faces the object and a third lower surface (4221) which is disposed at inner side than the second lower surface viewed from the optical axis and whose at least part is disposed above at least part of the first lower surface.
摘要:
An immersion projection optical system having, for example, a catadioptric and off-axis structure, reduces the portion of an image space filled with liquid (immersion liquid). The projection optical system, which projects a reduced image of a first plane onto a second plane through the liquid, includes a refractive optical element (Lp) arranged nearest to the second plane. The refractive optical element includes a light emitting surface (Lpb) shaped to be substantially symmetric with respect to two axial directions (XY-axes) perpendicular to each other on the second plane. The light emitting surface has a central axis (Lpba) that substantially coincides with a central axis (40a) of a circle (40) corresponding to a circumference of a light entering surface (Lpa) of the refractive optical element. The central axis of the light emitting surface is decentered in one of the two axial directions (Y-axis) from an optical axis (AX).
摘要:
A liquid immersion region (LR) is formed on a measuring member (65) by use of the liquid immersion mechanism (1), and measurement is performed by receiving measurement light through liquid (LQ) which forms the liquid immersion region (LR), in order to determine an exposure condition of a substrate (P). The substrate (P) is exposed by taking into account a difference between a pressure of the liquid (LQ) in the process of measurement and that in the process of exposure and a result of the measurement thus performed.
摘要:
A fluid handling structure, an immersion lithographic apparatus and a device manufacturing method are disclosed. In one arrangement, a fluid handling structure has a fluid extraction conduit with a recovery port configured to receive a used fluid into the conduit. A plurality of flow breakers are provided that each extends across at least a portion of the conduit. The flow breakers are positioned downstream of the recovery port. The flow breakers are arranged so that a common plane cuts through at least a portion of two or more of the flow breakers. The common plane is aligned so as to be perpendicular to the average direction of flow in the conduit at the position of the common plane.
摘要:
An exposure apparatus (100) for exposing a substrate (W) via a projection optical system (PL), the apparatus comprising an encoder system for measuring positional information of a movable body by irradiating each of four areas (52A, 52B, 52C, 52D), in which a grating (44) is formed, with a beam via each of four heads (46A, 46B, 46C, 46D). A controller controls the drive of the movable body such that as the movable body moves, a relationship between the grating and the heads changes between a first state and a second state. In the first state, the four heads respectively face the four areas. In the second state, only three of the heads respectively face three areas of the four areas, such that none of the heads face a fourth one of the four areas.
摘要:
An exposure apparatus exposes a substrate by projecting an image of a pattern onto the substrate via a projection optical system and a liquid that fills a gap between the projection optical system and the substrate. The exposure apparatus has a liquid recovery mechanism with a drive section powered by electric power supplied from a commercial power source and an uninterruptible power source separate from the commercial power source. When the commercial power source has a failure, the supply of electric power to the drive section is switched to the uninterruptible power source.