摘要:
A scanning exposure apparatus includes an illumination optical system for defining an illumination region, having a slit-like section, on an original with use of laser light from a continuous emission type excimer laser, and a driving device for relatively, scanningly moving an original and a substrate relative to the illumination region. The illumination optical system includes a scanning optical system for scanning a pupil plane of the illumination system with the laser light to produce a secondary light source thereon, such that the illumination region is defined by light from the secondary light source. When the width of the illumination region is W (mm), the scan speed of at least one of the original and the substrate is V (mm/sec/), and the time necessary for defining the secondary light source once is T (sec), a relation W/V=nT is satisfied, in which n is an integer.
摘要:
A projection exposure apparatus includes a light source for emitting light, a condensing optical system for receiving the light from the light source, for condensing the received light and for impinging the condensed light on a mask having a circuit pattern, a projection lens system for projecting the light passed through the mask onto a surface of a wafer, and an aperture member provided between the light source and the condensing optical system. The aperture member has a circular light transmitting portion for transmitting the light from the light source and a light blocking member extending across the circular light transmitting portion.
摘要:
A multiple exposure method includes a step of exposing a photosensitive material with a first pattern having a periodic pattern, and a step of exposing the photosensitive material with a second pattern different from the first pattern by using a projection optical system, wherein the step of exposing the photosensitive material with the second pattern is performed in each of a plurality of positions of the photosensitive material in an optical axis direction of the projection optical system relative to a focus position of an image of the second pattern, and wherein a desired pattern is formed in the photosensitive material by a multiple exposure including the step of exposing the photosensitive material with the first pattern and the step of exposing the photosensitive material with the second pattern.
摘要:
An exposure apparatus and a device manufacturing method for transferring a device pattern on a substrate by illuminating the device pattern with light from a light source include features of changing a photointensity distribution of the light source and adjusting an illuminance distribution on the substrate in accordance with a change of the photointensity distribution.
摘要:
An exposure apparatus for forming an image of a fine pattern having linear features extending in orthogonal first and second directions. The apparatus includes an illumination optical system for illuminating the pattern, the illumination optical system including a device for forming a secondary light source having decreased intensity portions at a center thereof and on first and second axes defined to intersect with each other at the center and defined along the first and second directions, respectively, wherein the secondary light source includes four sections being distributed in four quadrants defined by the center and the first and second axes, a projection optical system for projecting, on an image plane, an image of the pattern illuminated with light from the secondary light source, and a quartered detector, having four detector sections, for detecting a light quantity distribution of the secondary light source. Each of the four detector sections of the quartered detector independently detects a light quantity of a corresponding one of the four sections of the secondary light source.
摘要:
An illuminance measuring method and apparatus measures the illuminance on a wafer in an exposure apparatus for projecting a pattern formed on a mask onto a wafer. The illuminance of the mask causes the formation of ghost light on the mask. The apparatus and method use a first technique to measure the illuminance on the wafer while a mask used for actual exposure is mounted in the exposure apparatus and the mask is illuminated. The apparatus and method also use a second technique, different form the first technique, to measure the illuminance on the wafer while the mask used for actual exposure is mounted in the exposure apparatus and the mask is illuminated. The apparatus and method also find the distribution of the ghost light caused by the mask, based on the illuminance measured by these two techniques.
摘要:
A Bi-CMOS circuit includes a first bipolar, a second bipolar transistor and a CMOS control unit for performing switching controls of the first and second bipolar transistors on the basis of an input signal applied to an input terminal and for controlling an output signal output via the output terminal on the basis of the input signal. A turn-OFF unit temporality couples the base of the first bipolar transistor to a low-potential side power supply line on the basis of a current flowing in said control means when the first bipolar transistor is turned OFF, so that the first bipolar transistor can be rapidly turned OFF.
摘要:
A projection exposure method wherein a semi-transparent material effective to partially transmit exposure light and also effective to change a phase of the exposure light is used to form a circuit pattern and a light blocking zone adjacent to the circuit pattern, on a transparent substrate to provide a reticle, the light blocking zone being constituted by a pattern not resolved by a projection optical system, and wherein the reticle is illuminated with the exposure light and is projected on a member to be exposed, through the projection optical system is disclosed. The method includes detecting light quantity of an image of the light blocking zone as formed through the projection optical system, comparing the result of the detection with a predetermined value, and discriminating appropriateness of performing an exposure process with the reticle, on the basis of the comparison.
摘要:
An edge emphasis type phase shift reticle is illuminated obliquely, and zeroth order diffraction light and first order diffraction light caused by a fine pattern of the reticle and having substantially the same intensity are incident and distributed on a pupil of a projection optical system, symmetrically with respect to a predetermined axis, whereby the fine pattern is imaged with use of the zeroth order diffraction light and first order diffraction light.
摘要:
An imaging method for imaging a fine pattern having linear features extending along orthogonal first and second directions is disclosed, which method is characterized by: providing a light source having decreased intensity portions at a center thereof and on first and second axes defined to intersect with each other at the center and defined along the first and second directions, respectively; and illuminating the pattern with light from the light source.