Abstract:
PROBLEM TO BE SOLVED: To reduce the distortion of an image due to the temperature gradient of a substrate and an immersion liquid, in a liquid immersed projection exposure apparatus. SOLUTION: In an immersed lithographic apparatus including a temperature control unit for adjusting the temperature of a member in the final state of a projection exposure apparatus PL, a substrate, and an immersion liquid to a common target temperature T4, the temperature gradient is reduced, by adjusting the total temperature of these constituent components. By doing so, the matching properties of image formation and the total performance are improved. The means to be used includes a control of the flow rate of the immersion liquid and the temperature by a feedback circuit. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a lithographic apparatus for reducing a remaining liquid on a surface of a substrate after exposure by a projection system. SOLUTION: In this lithographic apparatus, a localized area of the substrate surface under a projection system PL is immersed in liquid. The height of a liquid supply system 310 above the surface of the substrate W can be varied using actuators 314. A control system uses feedforward or feedback control with input of the surface height of the substrate W to maintain the liquid supply system 310 at a predetermined height above the surface of the substrate W. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an immersion type lithography projection apparatus with improved functionality. SOLUTION: The highlights of this invention are that the lithography apparatus is equipped with a radiation system Ex to provide the projection beams PB of radiation including a radioactive source LA, a primary object table (mask table) MT connected to a primary positioning means to correctly position a mask against IL and a member PL, a secondary object table (substrate table) WT connected to a secondary positioning means to correctly position a substrate against the member PL, and a projection system PL to form an image of the irradiated part of the mask MA on the target part of the substrate W. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To disclose a lithography projector in which a space between the final element of a projection system and a substrate is filled with liquid. SOLUTION: Hermetic edge sealing members 17 and 117 surround a substrate W on a substrate table WT or another object at least partially thus preventing the catastrophic loss of the liquid when the edge part of the substrate is imaged or illuminated. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To reduce image distortion due to temperature gradients in a substrate and immersion liquid in an immersion projection exposure apparatus.SOLUTION: An immersion lithography apparatus comprises a temperature controller configured to adjust temperature of a member in the final stage of a projection exposure apparatus PL, a substrate, and immersion liquid to common target temperature T4. Imaging consistency and whole performance can be improved, by adjusting all of the temperatures of these structural members and by reducing temperature gradients. Means used to adjust the temperature may include controlling a flow rate and the temperature of the immersion liquid via a feedback circuit.
Abstract:
PROBLEM TO BE SOLVED: To provide an immersion type lithography projection apparatus with improved functionality. SOLUTION: The lithography projection apparatus includes: a radiation system Ex, IL also equipped with a radiation source LA, for providing the projection beams PB of radiation; a first object table (mask table) MT connected to a first positioning means, for correctly positioning a mask with respect to a member PL; a second object table (substrate table) WT connected to a second positioning means, for correctly positioning a substrate with respect to the member PL; and a projection system PL for forming an image of the radiated part of the mask MA on the target part C of the substrate W. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a scatterometer with an ellipsometric function so as to measure a phase difference and amplitude of beams diffracted by a structure in a plurality of wavelength ranges without using an existing phase modulator and without integrating additional hardware. SOLUTION: A system is configured to measure two individually polarized beams upon diffraction from a substrate in order to determine properties of the substrate. In order to change the phase of one beam out of two orthogonally polarized radiation beams with respect to the other of the two beams, a circularly polarized light source or an elliptically polarized light source is transferred via a fixed phase retarder. By the relative phases of the two radiation beams and other features of beams measured by a detector, the properties of a substrate surface are obtained. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a radial transverse electric polarizer device that includes a first layer of a material having a first refractive index, a second layer of a material having a second refractive index, and a plurality of elongated elements azimuthally and periodically spaced apart and disposed between the first layer and the second layer. SOLUTION: The radial transverse electric polarizer device includes: a first layer of a material having a first refractive index; a second layer of a material having a second refractive index; and a plurality of elongated elements azimuthally and periodically spaced apart and disposed between the first layer and the second layer. The plurality of elongated elements interacts with electromagnetic waves of radiation to transmit transverse electric polarization of electromagnetic waves of radiation. The polarizer device can be used in a lithographic projection apparatus to increase imaging resolution. A method of manufacturing a device includes polarizing a beam of radiation in a transverse electric polarization. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a lithographic projection apparatus in which a space between the substrate and projection system is filled with a liquid while minimizing the volume of the liquid that must be accelerated during stage movements. SOLUTION: In the lithographic projection apparatus, a seal member surrounds a space between the final element of the projection system and a substrate table of the lithographic projection apparatus. A gas seal is formed between the seal member and the surface of the substrate to contain the liquid in the space. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a lithographic apparatus and a device manufacturing method. SOLUTION: In a lithographic projection apparatus, a liquid supply system maintains liquid in a space between the final element of the projection system and the substrate of the lithographic projection apparatus. A shutter member is provided to take the place of the substrate in containing the liquid in the liquid supply system during substrate exchange. COPYRIGHT: (C)2005,JPO&NCIPI