Abstract:
Very fine circuit structures in microelectronics are produced by first applying a thin metal oxide layer uniformly over an entire surface of a layer to be etched, then applying a resist layer uniformly over the entire metal oxide layer and structuring such oxide layer by ion-beam etching and, utilizing the structured oxide layer as a mask, performing a dry-etching with an ion beam of the metal layer lying thereunder so as to attain structures having very unfavorable resist height to etching depth ratios.
Abstract:
The invention relates to a method for the production of masks, in particular for the production of alternating phase shift masks (1), or of chromeless phase shift masks or phase shift masks structured by quartz etching, respectively, as well as to a mask (1), in particular photomask, for the production of semiconductor devices, comprising at least one product field area (6a) and a compensation structure (5) positioned outside the product field area (6a), wherein the compensation structure (5) comprises at least one electroconductive region (8b) that is electrically connected with the product field area (6a).
Abstract:
A method for making large scale integrated circuits on a disklike semiconductor substrate includes grinding a disk thin enough to be able to be sawn apart into individual chips. A damage zone caused by the grinding on a back side of the wafer is removed by etching while protecting a front side of the wafer, prior to sawing. The etching is carried out in the form of a microwave or high-frequency-excited downstream plasma etching process using fluorine compounds in an etching gas.
Abstract:
An apparatus and the use of such an apparatus and method for producing microcomponents with component structures are presented which are generated in a process chamber on a substrate according to the LIGA method for example and are stripped from the enclosing photoresist with the help of a cooled remote plasma source.
Abstract:
A process enables plasma etching of materials that do not contain silicon. The process is particularly suitable for the side wall passivation of chromium layers in masks for fabricating semiconductor components. The plasma contains oxygen and/or nitrogen, and at least one silicon-donating compound is introduced into the plasma. This allows efficient passivation of side walls.
Abstract:
The method and system of the invention allow etching even relatively thick layers on the rear side of a semiconductor substrate where the front side is resist-free. An etching solution is sprayed in fine droplets onto the rear side of the semiconductor substrate. The semiconductor substrate may thereby be heated to a temperature .ltoreq.100.degree. C.
Abstract:
An apparatus is described for generating excited and/or ionized particles in a plasma with a generator for generating an electromagnetic wave and an excitation chamber with a plasma zone in which the excited and/or ionized particles are formed. At least one excitation chamber is arranged in an insulating material off-center relative to a ring-cylindrical outer conductor.
Abstract:
A device to generate excited and/or ionized particles in plasma with a generator to generate an electromagnetic wave and at least one plasma zone, in which the excited and/or ionized particles are formed by the electromagnetic wave. The plasma zone is formed in an interior chamber of a conductor for the electromagnetic wave.
Abstract:
A carrier has a surface with a mask layer thereon. An irradiation-sensitive layer on the mask layer is exposed and developed to form a first exposure structure. The first exposure structure is used as an etching mask while the mask layer is etched. The first exposure structure is subsequently removed. A second irradiation-sensitive layer is applied to the mask layer and the carrier. The second irradiation-sensitive layer is exposed with a first exposure dose and a second exposure dose. The second irradiation-sensitive layer is subsequently developed to form a second exposure structure with a first and second exposure structure thickness. The carrier is etched down to a first etching depth in the region of the first exposure structure thickness and down to a second etching depth in the region of the second exposure structure thickness. The first etching depth is larger than the second etching depth.
Abstract:
A method for the manufacture of highly-integrated circuits on a semiconductor substrate includes applying coatings to front and back sides of a wafer of semiconductor material in at least one deposition process, and subsequently removing the coating on the back of the wafer by etching being carried out with the front of the wafer being free of lacquer. The etching is performed in a process chamber in which reactive particles produced in a plasma only reach the back of the wafer, while advances of the reactive particles toward the front of the wafer are prevented by a protective neutral gas.