摘要:
A proximity X-ray exposure apparatus for irradiating a reticle with X-rays generated from an X-ray source and irradiating a substrate with X-rays that have passed through the reticle. The apparatus includes a plasma X-ray source for generating X-rays by producing plasma, and a control device for controlling X-ray intensity distribution by controlling production of the plasma so that the plasma is produced at a plurality of positions in one irradiating operation of the substrate with the X-rays. The control device controls the X-ray intensity distribution in order to control the plurality of positions so that a required amount of defocusing, which is a size of a projection image corresponding to one point on the reticle formed by irradiating the reticle with X-rays generated at the plurality of positions, can be obtained.
摘要:
An exposure method for printing a pattern onto a workpiece to be exposed, includes a first exposure step for forming, on the workpiece and by exposure, a transferred image of a first absorbing material pattern formed on a mask and having no periodic structure, and a second exposure step for printing, on the workpiece and by exposure, a diffraction pattern to be produced through Fresnel diffraction due to a second absorbing material pattern formed on the mask and having a periodic structure, the diffraction pattern having a period corresponding to 1/n of a period of the transferred image of the periodic structure pattern, where n is an integer not less than 2, and wherein the first and second exposure steps are performed simultaneously.
摘要:
An exposure apparatus includes a mirror for reflecting radiation light from a light source, a driving mechanism for holding and oscillating the mirror, a detector for detecting the position of a beam of the radiation light projected on the mirror, an adjusting mechanism for adjusting the position of the mirror with respect to the radiation light on the basis of an output of the detector, and a reference table for positioning the driving mechanism and the detector with respect to the same reference.
摘要:
A measuring method that utilizes a bandpass filter and a measurement apparatus to measure an intensity of light having a predetermined wavelength among lights emitted from a light source, the bandpass filter transmitting the light having the predetermined wavelength, the measurement apparatus measuring an absolute intensity of an incident light includes the steps of measuring an output of the measurement apparatus continuously, stopping or starting an emission of the light source in the measuring step, calculating a first extreme value t→t0−0 and a second extreme value t→t0+0 in the output of the measurement apparatus at time t0 where t is time in the measuring step, and t0 is time when the emission of the light source stops; and calculating a difference between the first extreme value t→t0−0 and the second extreme value t→t0+0.
摘要:
An alignment apparatus for aligning with each other a mask stage that supports a mask that has an exposure pattern and a wafer stage that supports an object by using a light with wavelength of 1 nm to 50 nm, said alignment apparatus including a substrate for forming a first reference pattern similar to a second reference pattern formed on the mask or the mask stage, and a detection part for detecting a light from the substrate, wherein said substrate and detection part form a hollow housing, in which a gas is filled.
摘要:
An exposure method for exposing a workpiece in a proximity exposure system, includes a first exposure step for printing, by exposure, an image of a first mask pattern on a predetermined portion of the workpiece, and a second exposure step for printing, by exposure, an image of a second mask pattern, different from the first mask pattern, on the predetermined portion of the workpiece, wherein exposures in the first and second exposure steps are performed superposedly, prior to a development process.
摘要:
An exposure method for posing a workpiece in a proximity exposure system, includes a first exposure step for printing, by exposure, an image of a first mask pattern on a predetermined portion of the workpiece, and a second exposure step for printing, by exposure, an image of a second mask pattern, different from the first mask pattern, on the predetermined portion of the workpiece, wherein exposures in the first and second exposure steps are performed superposedly, prior to a development process.
摘要:
Disclosed are an object holding process and and an apparatus therefor in which a process strain of the object can be accurately compensated for. When the exposure operation is started, the bottom surface of the object is held by a holding unit. If the object has a strain, the process strain is calculated. Here, if the process strain is larger than a tolerance, the temperature of the object is set to an object setting temperature in a position other than an exposure position in order to contract or expand the object by a predetermined amount for a magnification correction. The bottom surface of the object is then held by the holding unit again, and the exposure of the object is performed in the exposure position.
摘要:
In an SOR exposure system for transferring patterns on masks to semiconductor wafers by using SOR radiation reflected by an X-ray reflecting mirror, a first shutter device for shielding at least .gamma. rays and a second shutter device for shielding X-rays are provided between the SOR ring and the mirror inside a beam port, and an exposure adjustment device for adjusting the amount of exposure when a circuit pattern on a mask is transferred to a wafer is provided between the mirror and the wafer. As a result, the human body can be protected against radiation rays, such as gamma rays, generated from the SOR ring when electrons are implanted thereto or when the SOR ring is stopped. Damage to the X-ray reflecting mirror caused by radiation rays is reduced, and stable reflectance of the mirror can be obtained. Maintenance of the SOR exposure system is also made easier.
摘要:
A measuring apparatus according for measuring relative positions between a first mark on a movable reticle stage to hold a reticle, and a second mark on a movable object stage to hold an object to be exposed, the apparatus includes a detector for detecting light that has passed the first and second marks, and a processor for calculating the relative positions based on an output of the detector, wherein each of the first and second marks includes plural patterns to direct the light, at least ones of widths and intervals of the plural patterns being non-uniform.