Abstract: Transistor bodies of semiconductor material located at a main surface of a semiconductor substrate between shallow trench isolations are provided with a rounded or curved upper surface. A floating gate electrode is arranged above said upper surface and electrically insulated from the semiconductor material by a tunnel dielectric having essentially the same tiny thickness throughout a primary tunnel area encompassing the area of curvature. The floating gate electrode may bridge the transistor body and is covered with a coupling dielectric provided for a control gate electrode, which forms part of a wordline.

Abstract: Transistor bodies of semiconductor material located at a main surface of a semiconductor substrate between shallow trench isolations are provided with a rounded or curved upper surface. A floating gate electrode is arranged above said upper surface and electrically insulated from the semiconductor material by a tunnel dielectric having essentially the same tiny thickness throughout a primary tunnel area encompassing the area of curvature. The floating gate electrode may bridge the transistor body and is covered with a coupling dielectric provided for a control gate electrode, which forms part of a wordline.

Abstract: In a method for fabricating a dynamic memory cell in a semiconductor substrate having a trench capacitor 1 and a selection transistor 2 and a semiconductor memory having such a memory cell, a dielectric insulator layer 17, 201 is formed between the selection transistor and the trench capacitor, a first electrode region 203 of the selection transistor essentially being arranged above a block-type inner electrode 102 of the trench capacitor and being connected to said electrode via a contact opening 213 in the dielectric insulator layer, said contact opening being provided with an electrically conductive filling layer 214.

Abstract: One-transistor memory cell arrangement and method for fabricating it

Abstract: For a roller mounted on roller bearings in a roller stand, a hydrostatic support element is provided directly next to the roller bearing. The support element applies an additional force sufficient to assure proper rolling movement of the roller bearing bodies of the roller bearing when there is insufficient weight on the roller bearing to assure proper rolling movement. Alternatively, when great force is applied to the roller, the support element can alleviate the force applied to the roller bearing.

Abstract: A cylinder device includes a deflection-controllable cylinder having a rotating hollow cylinder which is longitudinally traversed by a crosshead. Crosshead sags when subjected to a load. The ends of the crosshead, which protrude from the hollow cylinder, are supported by bearings in the cylinder housing that include flat slide surfaces which interact, are hydraulically relieved of load, and absorb the elongation of the crosshead. Also, where applicable, spherical surfaces which interact, are hydraulically relieved of load, and absorb the deflection of the crosshead.

Abstract: A calender which includes a deflection-controlled roller with a rotating hollow cylinder and a non-rotating cross-head. Hydrostatic supporting elements on the cross-head can be radially displaced towards the inside circumference of the hollow cylinder, and have hydrostatic bearing pockets in their contact surfaces. The position of supporting elements are controlled using a cylinder space with a small cross-section. When there is a problem with the web, the cylinder spaces can all be hydraulically relieved, eliminating the contact pressure and therefore the exertion of force by the supporting elements.

Abstract: A roller assembly includes a rotating hollow roller and a non-rotatable crosshead longitudinally traversing the hollow roller. The hollow roller is supported by supporting elements acting against the inner circumference of the hollow roller. Each supporting element has a hydrostatic bearing pocket, whose extension in the longitudinal direction of the roller is at least three times that in its circumferential direction. This prevents the hollow roller from deforming and prevents edge pressure from being exerted on the web surrounding the bearing pocket.

Abstract: A roll having bending control has a rotating hollow roll and a non-rotatable crossbeam penetrating the hollow roll lengthwise. Arranged on the crossbeam in an axially parallel row, closely following one another, are supporting elements which can be actuated independently of one another by fluid pressurized medium. Supply lines are attached via angle units to a bar-type carrier which is fastened to the crossbeam by means of screws that can be manipulated from the outside. The screws have longitudinal bore holes through which the respective supply line is directly connected to the respective supporting element.

Abstract: A roller with controllable sag is provided with a revolving hollow roller and a non-rotating crosshead that crosses the hollow roller along its length and on which the hollow roller is supported by a series of supporting elements that are actuated by a pressure medium. Separate supply lines (13) lead to the supporting element and open out into a collection head (40) at the end (10') of the crosshead, to which the outer connection lines (53) are connected. The connection head (40) comprises a double-disc rotary slide valve (50) by which the lines (13, 53) can be interrupted and which in the closed state can be separated at a separation surface (47). The individual discs (51, 52) of the double disc rotary slide valve (50) keep both the supply lines (13) and connection lines (53) closed, thus facilitating replacement of the roller as and when required.

Abstract: A semiconductor memory configuration in a semiconductor substrate includes bit lines, word lines, and memory cells each including one memory capacitor and one MOS selection transistor having two conducting regions and a gate electrode. Each memory capacitor is connected to one of the conducting regions of the transistor. The other of the conducting regions of the transistor is connected to one of the bit lines, and the gate electrode of the transistor is connected to one of the word lines. An insulating field oxide or buried insulating oxide with substantially vertical sidewalls is provided. A trench lies adjacent to the insulating field oxide or buried insulating oxide and adjacent to one of the conducting regions. The capacitors are each disposed in one trench for each memory cell. A first insulating layer covers the inner trench wall surface. A first electrode of the capacitor is disposed perpendicular to the substrate surface on the first insulating layer completely inside the trench.

Abstract: A thick layer formed of aSi or aSi/aSiN is used as an antireflection layer (3) in the lithographic structuring of layers (2) on a semiconductor substrate (1). A reflection suppression is based on absorption in the aSi layer and on interference in the aSiN layer. An optical decoupling of the background is achieved, with the result that the antireflection layer can be used universally.

Abstract: In a "floating" roller with a fixed cross-beam and a rotating hollow roller, semicylindrical longitudinal chambers are separated and divided off by longitudinal seals and end cross-seals in the space between the crosshead and the hollow roller. At least the longitudinal chamber on the roller nip side can be filled with a compressed gas. The longitudinal seals and the end cross-seals are doubled and are made of closely juxtaposed pairs of sealing strips or. Into the spaces between the sealing strips can be introduced a sealing liquid which seals the longitudinal chambers. Sealing liquid which has penetrated into the longitudinal chambers is continuously removed.

Abstract: A semiconductor memory configuration in a semiconductor substrate includes bit lines, word lines, and memory cells each including one memory capacitor and one MOS selection transistor having two conducting regions and a gate electrode. Each memory capacitor is connected to one of the conducting regions of the transistor. The other of the conducting regions of the transistor is connected to one of the bit lines, and the gate electrode of the transistor is connected to one of the word lines. An insulating field oxide or buried insulating oxide with substantially vertical sidewalls is provided. A trench lies adjacent to the insulating field oxide or buried insulating oxide and adjacent to one of the conducting regions. The capacitors are each disposed in one trench for each memory cell. A first insulating layer covers the inner trench wall surface. A first electrode of the capacitor is disposed perpendicular to the substrate surface on the first insulating layer completely inside the trench.

Abstract: A roller for compressing of webs of material comprises a rotating hollow roller traversed lengthwise by a stationary crosshead. Hydraulic loading devices in the form of sealing members act on the inside circumference of the hollow roller and delimit hydrostatic bearing pockets to which hydraulic pressure fluid can be supplied. The extension of the sealing members is limited by head bolts, which make it possible to position the hollow roller relative to the crosshead during operation.

Abstract: A driven, deflection-controlled cylinder includes a stationary crosshead that is surrounded by a hollow cylinder. The hollow cylinder has a projection that includes a bushing-like part which encloses the narrow end of the crosshead with a slight radial distance therebetween. A bearing is arranged on the bushing-like part, which is supported in the axially outer part of a bearing bell that is arranged on the outer end of the crosshead. A gear wheel is arranged between the bearing bell and the end of the hollow cylinder, and it engages with a drive pinion in a drive housing. The drive housing is mounted on the side of the projection adjacent to the hollow cylinder, as well as on the outside of the axially outer part of the bearing bell that is opposite the drive pinion.

Abstract: In a hydraulically supported roll including a rotatable hollow cylinder and a stationary crosshead, transverse end seals are provided to seal the annular clearance space formed between the crosshead and the inner circumference of the hollow cylinder. Each transverse end seal includes a slide ring having a chamber located on the first surface of the slide ring abutting a counter-ring. The chamber provides hydraulic relief. Radially outside of the chamber a narrow groove is provided which communicates with the low-pressure side of the slide ring via a channel. The channel discharges hydraulic fluid flowing to the first surface of the slide ring as a result of the high pressure in the clearance space.

Abstract: A roll arrangement comprises a hydraulically supported bottom roller having rotating hollow cylinder and a stationary crosshead extending lengthwise through the cylinder to form a clearance space therewith. The end of the crosshead are supported by force exerting devices. The forces producing the line pressure of the roll are transferred through a hydraulic supporting device, such as hydraulic fluid contained within a longitudinal pressure chamber in the crosshead, to the inner circumference of the hollow cylinder. When a quick release action is desired to separate the bottom roller from its counterroll, the pressure in the longitudinal chamber is suddenly lowered by opening a quick release valve connected to a return tank. A corresponding reduction of the pressure in the force exerting devices to permit separation of the rollers occurs only after a sensor, such as a dynamometer, has determined that the load on the crosshead has been substantially removed.

Abstract: A hydrostatically supported roll has several hydrostatic support elements supporting the inner circumference of a rotating hollow roll. The hydrostatic elements are supported on the stationary crosshead that extends through the rotating roll to form a clearance space therewith. Each hydrostatic element has support pockets supplied with a first pressurized fluid via choke canals and branch lines connected to a flow-controlled pump delivering a constant volume of first pressurized liquid, regardless of the counterpressure in the support pockets. The first pressurized liquid fed to the support pockets is temperature-controlled. The support pockets are separated from essentially closed pressure chambers, which are supplied with a second pressure-controlled pressurized liquid from separate feedlines for pressing the hydrostatic elements against the inner circumference of the hollow roll to support same. The second pressurized liquid is not communicated to the inner circumference of the hollow roll.

Abstract: A hydraulically supported roller comprises a hollow cylinder that rotates about a stationary cross-head. Cylindrical recesses are radially disposed in the cross-head. Piston-like supporting plungers are displaceable in the recesses against the inner circumference of the cylinder. To limit the stroke of the supporting plunger in the cylinder recess and, hence, the displacement of the cylinder relative to the cross-head, at least one conduit is provided, which leads from the interior of the cylindrical recess to the clearance space outside of the cross-head. Pressure fluid is allowed to escape from the cylindrical recess to limit the stroke when the conduit is uncovered at a predetermined stroke by the supporting plunger.