摘要:
A lithographic projection apparatus is disclosed in which the space between the final element of the projection system and a sensor is filled with a liquid.
摘要:
In a lithographic projection apparatus a liquid supply system maintains liquid in a space between a final element of the projection system and the substrate with a liquid confinement system. The liquid supply system further comprises a de-mineralizing unit, a distillation unit and a UV radiating source for the purification of immersion liquid. Chemicals may be added to the immersion liquid for the inhibition of lifeform growth and components of the liquid supply system may be made of a material which is non-transparent to visible light such that growth of lifeforms is reduced.
摘要:
Liquid is supplied to a space between the final element (PL) of the projection system and the substrate. A flow of gas towards a vacuum chamber (34) prevents the humid air from escaping to other parts of the projection apparatus. This protects intricate parts of the lithographic apparatus from being damaged by the presence of humid air.
摘要:
An immersion lithography apparatus comprising a lens, formed from a liquid, which may be the immersion liquid located between the final element of the projection system and the substrate, and having optical properties that may be tuned by a tuning device. The tuning device is arranged to adjust properties of the liquid lens such as the shape, composition, refractive index or absorptivity as a function of space or time in order to change the imaging performance of the apparatus.
摘要:
The present invention relates to an immersion lithographic apparatus and a device manufacturing method in which the position of focus of the projected image is changed during imaging thereby to increase the focus latitude. Immersion lithography lends itself to this and several ways of varying the focus using the liquid supply system to do this are disclosed.
摘要:
An immersion lithography apparatus comprising a temperature controller (23) for adjusting the temperature of the final element of the projection system (PL), the substrate (W) and the liquid towards a common target temperature (T4). Controlling the overall temperature of these elements and reducing temperature gradients improves imaging consistency and general performance. Measures employed include controlling the immersion liquid flow rate and temperature via a feedback circuit.
摘要:
The pressure and/or height of liquid 11 in a liquid reservoir 10 of an immersion lithography apparatus is obtained by measurement devices 20a, 20b to determine the height and/or tilt of the substrate W.
摘要:
A lithographic apparatus in which a localized area of the substrate surface under a projection system PL is immersed in liquid. The height of the 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.
摘要:
A lithographic projection apparatus is disclosed in which the space between the final element of the projection system and the substrate is filled with a liquid. An edge seal member 17, 117 at least partly surrounds the substrate W or other object on the substrate table WT to prevent catastrophic liquid loss when edge portions of the substrate or are imaged or illuminated.