摘要:
A lithographic apparatus, a device manufacturing method, and a projection element for use in a lithographic apparatus are disclosed. The lithographic apparatus has a radiation system for providing a pulsed beam of radiation, a patterning device for imparting the beam with a pattern to form a patterned radiation beam, and a projection system having a projection element for projecting the patterned beam onto a target portion of a substrate. The apparatus further comprises an actuator for moving the projection element for shifting the patterned beam that is projected onto the substrate during at least one pulse of the radiation system. This can be done to compensate for a positional error between a substrate table holding the substrate and an aerial image of the projection system. The positional error could occur due to mechanical vibrations in the frame system of the lithographic apparatus.
摘要:
A system and method are used to allow for compensation of a thermal output of an array of individually controllable elements. This can be done by inputting control signals to the array when it is not being used to pattern a projection beam in order to maintain the temperature of the array. A heating element can be provided to maintain the temperature of the array. A thermal reservoir can be provided to maintain the temperature of the array or a cooling element can be provided to reduce the temperature of the array during use.
摘要:
A method of transferring an image of a pattern layout onto a surface of a substrate including selecting a first illumination profile for a first area of the pattern layout and a second illumination profile for a second area of the pattern layout; switching illumination profile during transfer of the image of the pattern layout such that the first area of the pattern layout is illuminated with the first illumination profile and the second area is illuminated with the second illumination profile; and projecting an image of the illuminated first and second areas onto the surface of the substrate.
摘要:
A tilting mirror design for maskless lithography is proposed. In this mirror, the tilting portion occupies about 60% of the entire element area. The surrounding space is made 100% reflective and out-of-phase with respect to the tilting portion. The ratio between the tilting portion of the mirror and the out-of-phase portion is optimized in order to result in equal positive and negative maximum amplitudes over a complete range of tilt angles.
摘要:
A lithographic system combining an interference exposure unit and a lithography unit. The lithography unit can comprise an array of individually controllable elements. The lithography system can be arranged such that a pitch of the lines exposed by the interference exposure unit is an integer multiple of a size of an exposure area of the lithography unit corresponding to a single individually controllable element.
摘要:
Pixel element for a programmable patterning structure (e.g. a spatial light modulator) which can simultaneously modulate both phase and amplitude. Use of such a programmable patterning structure with lithographic projection apparatus is also described.
摘要:
A system and method are used to manufacture a device using at least one exposure step. Each exposure step projects a patterned beam of radiation onto a substrate. The patterned beam includes a plurality of pixels. Each pixel delivers a radiation dose no greater than a predetermined normal maximum dose to the target portion in the exposure step and/or at least one selected pixel delivers an increased radiation dose, greater than the normal maximum dose. The increased dose may be delivered to compensate for the effect of a defective element at a known position in the array on a pixel adjacent a selected pixel or compensate for underexposure of the target portion at the location of a selected pixel resulting from exposure of that location to a pixel affected by a known defective element in another exposure step.
摘要:
A lithographic apparatus comprises an illumination system for supplying a beam of radiation, an array of individually controllable elements serving to impart the beam with a pattern in its cross-section, a substrate table for supporting a substrate, and a projection system for projecting the patterned beam onto a target portion of the substrate. The beam of radiation comprises a plurality of beam components. The plurality of beam components includes a first beam component having a first frequency spectrum about a first frequency and at least a second beam component having a second frequency spectrum about a second frequency. The second frequency is different from the first frequency. The projection system focuses the first and second beam components at different heights with respect to the substrate table.
摘要:
A method and system are provided for printing a pattern on a photosensitive surface using a spatial light modulator (SLM). An exemplary method includes defining two or more exposure areas on the photosensitive surface, the exposure areas overlapping along respective edge portions of the exposure areas to form an overlap zone therebetween. Two or more exposure areas are exposed to print an image therein, the exposing extending through the overlap zone. The exposing within the overlap zone is then attenuated.
摘要:
The tilt and position of individually controllable element are simultaneously adjusted to allow a greater range of contrasts to be achieved. This can also be used to compensate for cupping of individually controllable elements. Simultaneous adjustment of both the position and tilt of the individually controllable elements can be achieved by two electrodes operable over a range of values.