摘要:
An illuminating apparatus includes a light source including a cylindrical light-emitting tube, a first optical system, a second optical system, and a third optical system. The first optical system has an incident surface on which light emitted from the light source to the object side are incident and an emergent surface from which the light passing through the incident surface are emitted. The second optical system has a reflecting surface from which light emitted from the light source to a first side are reflected. The third optical system has a reflecting surface from which light emitted from the light source to a second side opposite to the first side are reflected. The first to third optical systems each illuminate the entire illumination area of the object with light emitted from the light source and incident on the optical systems.
摘要:
An exposure method for transferring a device pattern to a resist, wherein the device pattern includes a first element and a second element having a linewidth narrower than the first element. The method includes a first exposure step for exposing the resist by use of an interference fringe, produced by interference of two light beams, through an exposure amount substantially not greater than a threshold of the resist, and a second exposure step for exposing the resist with a light pattern related to the first and second elements. A light component, of the light pattern, related to the first element bears an exposure amount greater than the threshold, a light component, of the light pattern, related to the second element bears an exposure amount not greater than the threshold and is to be combined with light in a portion of the interference fringe, and a sum of the exposure amount of the light component related to the second element and an exposure amount provided by the light in the portion of the interference fringe is greater than the threshold.
摘要:
The invention provides a non-volatile semiconductor storage apparatus wherein silicon pillars are formed by epitaxial growth thereby to suppress a dispersion in channel length and improve the quality of a gate oxide film. In production, epitaxial silicon pillars are formed by selective epitaxial growth on a p-type silicon substrate, and a gate oxide film is formed over the overall area. Polycrystalline silicon is deposited and etched back to form a first polycrystalline silicon film serving as floating gates. Ion implantation is performed to form drain regions at the tops of the epitaxial silicon pillars and form a source region on the surface of the silicon substrate. A layered insulation film is formed, and polycrystalline silicon is deposited and etched back to form a second polycrystalline silicon film which covers over the side faces of the floating gates and serves as control gates. Bit lines are formed on the drain regions.
摘要:
A position detection apparatus and method detects the relative positional relationship between first and second objects facing each other in a facing direction. First, second and third marks each serving as a physical optical element are provided on the first object, while a fourth mark serving as a physical optical element is provided on the second object. A light projector projects light onto the first and second objects A light detector detects a first light beam diffracted by the first mark and reflected by the second object, a second light beam diffracted by the second mark and reflected by the second object, and a third light beam diffracted by the third and fourth marks. A first position detector detects the relative positional relationship between the first and second objects in the facing direction based on signals representing the first and second light beams from the light detector. A second position detector detects the relative positional relationship between the first and second objects in a direction perpendicular to the facing direction based on signals representing the first, second and third light beams from the light detector.
摘要:
A device for measuring an interval between two plate-like objects includes a light source for projecting a light toward the objects, a detector for detecting a position of incidence, upon a predetermined surface, of the light projected by the light source and deflected by the two objects, and a calculating portion for measuring the interval of the two objects on the basis of the detection by the detector.
摘要:
A sputtering technique is conducted within a sputtering device the inside of which is in the state of vacuum, whereby a second polycrystal silicon film (7) is deposited on a first polycrystal silicon film (3) on the surface of which a natural oxide film (4) exists. The inside of the sputtering device is maintained to be in the state of vacuum after the second polycrystal silicon film (7) is formed. With the same sputtering device, a metal silicide film (5) is deposited on the second polycrystal film under vacuum. When a silicon oxide film is formed on the silicide film, silicons to be oxidized are uniformly supplied through the silicide film. Therefore, the polycrystal silicon film and the silicide film are not separated from each other at the boundary face between them. Further, product yield rate is improved since it is not necessary to perform sputter etching.
摘要:
A method of detecting relative positional deviation between first and second objects. The method includes the steps of providing the first object with a first mark which functions as a lens, providing the second object with a second mark which functions as a lens, providing an optical system between the first and second objects, directing a radiation beam through the first mark and the optical system to the second mark, and detecting any shift of the radiation beam from the second mark irradiated with the radiation beam from the optical system, to detect the relative positional deviation of the first and second objects.
摘要:
A device for detecting a relative positional relationship between first and second objects with respect to a predetermined direction includes an illumination system for irradiating the first object with light, wherein the first and second objects are provided with first and second physical optic elements, respectively, each having a light converging or diverging function in at least one direction and wherein the illumination system illuminates the first physical optic element. A photodetecting system detects light passing through the first object and emanating from the second object, and is operable to detect light convergently or divergently influenced by both of the first and physical optic elements, such that the relative positional relationship between the first and second objects can be detected on the basis of the detection by the photodetecting system. At least one of the first and second physical optic elements has a light converging or diverging function in a direction perpendicular to the one direction and has different focal lengths in the perpendicular direction and in the one direction.
摘要:
A method of detecting the position of a substrate by using a grating pattern formed on the substrate is disclosed. In this method, a radiation beam is projected to the grating pattern by which a diffraction beam is produced and received by a sensor, wherein any reflectively scattered light from an edge of an outer peripheral part of the diffraction pattern is substantially prevented from being received by the sensor; and wherein an output signal from the sensor responsive substantially only to the diffraction beam from the grating pattern is used to determine the position of the substrate.
摘要:
A device for detecting relative positional deviation between a mask and a wafer is disclosed, wherein the mask has a first grating pattern and a zone plate pattern and the wafer has a second grating pattern. The device includes a directing system for directing a radiation beam to the first grating pattern of the mask, such that the first grating pattern produces a first transmitted beam which is then inputted to the wafer substantially perpendicularly and a second transmitted beam which is obliquely inputted to the wafer and such that the first grating pattern also produces a first reflected beam; and a detecting system for detecting (i) the first reflected beam and also for detecting (ii) a second reflected beam resulting from reflective diffraction of the first transmitted beam by the second diffraction pattern of the wafer, the third reflected beam being displaceable with any inclination of a surface of the wafer and (iii) a third reflected beam resulting from reflection of the second transmitted beam by the wafer surface and from diffraction of the same by the zone plate pattern of the mask and being displaceable with any inclination of the wafer surface and an interval between the mask and the wafer.