Abstract:
A projection exposure apparatus consists of : an illumination optical system, including a light source, for irradiating a mask; a projection optical system for projecting a hyperfine pattern image on a substrate ; an optical integrator for illuminating the mask in a homogeneous illuminance distribution ; and a luminous flux distributing member for distributing the luminous fluxes from the integrator into two luminous fluxes in two different directions for focusing intensity distributions over the Fourier transform surface or the surface in the vicinity thereof on two portions part from the optical axis of the illumination optical system. An exposure method of exposing the mask patterns onto an exposed member comprises : a step of starting the exposure when setting a movable optical member in a first position ; a step of switching the movable optical member from the first position to a second position ; a step of shielding the illumination light during the switching process ; and a step of finishing the irradiation of the mask with the luminous fluxes when an exposure quantity reaches a preset value.
Abstract:
A processing method comprises: a first step of depositing on a substrate which is a specimen a film of any one of a semiconductor, a metal and an insulator; a second step of subjecting the surface of the film deposited in the first step, to irradiation with a beam having a given energy to produce a physical damage on the surface; a third step of subjecting the film surface on which the physical damage is produced in the second step, to selective irradiation with light to partially cause a photochemical reaction so that a mask pattern depending on the desired device structure is formed on the film surface; and a fourth step of carrying out photoetching using as a shielding member the mask pattern formed in the third step.
Abstract:
An exposure method wherein a mask (8) and a semiconductor wafer (1) are disposed opposed to each other in a close proximity relation in respect to Z-axis direction and wherein a pattern of the mask is printed on each of different shot areas of the semiconductor wafer in a step-and-repeat manner, with a predetermined exposure energy, is disclosed. In this method, the spacing between the mask and the wafer for the paralleling of them is made larger than the spacing therebetween as assumed at the time of mask-to-wafer alignment in respect to X-Y plane or the spacing between the mask and the wafer as assumed at the time of exposure of the wafer to the mask. After the paralleling of the mask and the wafer, the mask and the wafer are relatively moved closer to each other in the Z-axis direction and the alignment and exposure is performed. This ensures that the alignment and exposure is effected at an optimum spacing while, on the other hand, contact of the mask and the wafer at the time of paralleling is precluded.
Abstract:
Um galvanoplastische Flachteile mit rotations-unsymmetrischen, kegelförmigen Strukturen zu erzeugen, werden auf das mit Fotopolymer beschichtete Substrat während der Belichtung definierte Dreh- und Wippbewegungen übertragen. Dazu dient ein Taumelbelichtungsgerät, durch das die Neigung des Auflagetellers während einer kontinuierlichen Drehbewegung im 90°-Rhythmus geändert wird.
Abstract:
There is provided an apparatus for producing a flexographic printing plate in-line. The apparatus has a housing providing a closed environment for producing the plate, and a transport device based on a roller system for transporting the flexographic printing plate through the apparatus. Gripping devices hold the plate during the treatment process with UV LED exposure units, and a control unit regulates the power of the exposure units and the transport speed of the transport device, including the speed by which the gripping devices are moved.
Abstract:
Verfahren zur Herstellung von Flexodruckformen, bei dem man als Ausgangsmaterial ein fotopolymerisierbares Flexodruckelement einsetzt, welches übereinander angeordnet mindestens umfasst: - einen dimensionsstabilen Träger, und - mindestens eine fotopolymerisierbare reliefbildende Schicht, mindestens umfassend ein elastomeres Bindemittel, eine ethylenisch ungesättigte Verbindung und einen Fotoinitiator, - eine digital bebilderbare Schicht, und das Verfahren mindestens die folgenden Schritte umfasst: (a) Erzeugung einer Maske durch Bebilderung der digital bebilderbaren Schicht, (b) Belichtung der fotopolymerisierbaren reliefbildenden Schicht durch die Maske hindurch mit aktinischem Licht und Fotopolymerisation der Bildbereiche der Schicht, und (c) Entwicklung der fotopolymerisierten Schicht durch Auswaschen der nicht fotopolymerisierten Bereiche der reliefbildenden Schicht mit einem organischen Lösungsmittel oder durch thermische Entwicklung, dadurch gekennzeichnet, dass der Schritt (b) zwei oder mehrere Belichtungszyklen (b-1) bis (b-n) mit aktinischem Licht mit einer Intensität von 100 bis 10 000 mW/cm 2 aus einer Mehrzahl von UV-LEDs umfasst, wobei die pro Belichtungszyklusin die fotopolymerisierbare reliefbildende Schicht eingetragene Energie 0,1 bis 5 J/cm 2 beträgt.
Abstract:
The invention pertains to an exposure apparatus, a method for exposing a photosensitive element to radiation using the exposure apparatus, and a method for preparing a printing form from the photosensitive element. The exposure apparatus includes a base assembly having an exposure bed that supports the photosensitive element, and a lamp housing assembly having two or more lamps. The lamp housing assembly includes an air distribution assembly having an air chamber that is disposed adjacent to the lamps and pressurized to provide uniform distribution of air exiting the air chamber to impinge a backside of each of the lamps. The air exiting the chamber and impinging the lamps is controlled by monitoring the temperature of the lamps and/or the irradiance emitting from the lamps.