Abstract: A cooking apparatus comprises a glass-ceramic plate, at least one heat radiator arranged underneath the plate, at least one sensor arranged underneath the plate in an area which is shielded from the heat radiation, for measuring the temperature in this area, and a device for controlling the heating power in dependence upon signals supplied by the sensor. A simple and reliable method of measuring the temperature of the bottom of the cooking vessel can be obtained when, in the cooking apparatus the heat radiator is a halogen lamp system and the hotplate is a ceramic plate which is highly transparent to halogen-lamp radiation and has a degree of absorption of approximately .ltoreq.40%, the sensor engages against the underside of the ceramic plate, and the control device comprises an element for selecting a nominal.

Abstract: A device is described for aligning a first object provided with a first alignment mark (P) with respect to a second object provided with a second alignment mark (M), which marks have a periodical structure and are imaged onto each other. By selecting beam portions from the radiation from the first alignment mark (P) with the aid of an order diaphragm (55'), which beam portions are deflected through larger angles, the sensitivity of the device to errors can be decreased. Such a device may be used to great advantage in a lithographic apparatus.

Abstract: A thin-film magnetic head (101) includes windings assembled from two levels (105, 106) having two electrically conducting layers (103, 104), each including a connecting track (107, 116) and a winding (110, 113). To reduce the electrical resistance, auxiliary tracks (130, 131) which are in contact with the connecting tracks and also form part of the layers extend parallel to the connecting tracks. Consequently, no additional manufacturing steps are required.

Abstract: The present invention is directed to a technique for manufacturing semiconductor devices in which p type GaN is formed on a substrate and semi-insulating AlN is formed on the P type GaN with n type GaN formed on the p type GaN and partially below the AlN. Highly efficient high power and high voltage semiconductor devices are formed through this technique having better or similar properties to silicon type semiconductors.

Abstract: A method of manufacturing a flat, glass-like or ceramic moulding having a structured surface, in which a rotationally symmetrical, moist green body is manufactured from a suspension of a highly dispersed, powdered solid material and a dispersing agent by centrifuging in a hollow mould, whereafter said green body is removed from the hollow mould and, if necessary, rolled out subsequently, cut up and, after which it is spread out on a structure-imparting substrate, the surface is embossed by applying pressure and, subsequently, the glass-like or ceramic moulding is produced by drying and sintering.

Abstract: A description is given of a method of providing an electroluminescent device (20) comprising an active layer (5) of conjugated 2,5-alkyl- or alkoxy-substituted poly(p-phenylene vinylene) with inactive regions (51) and emissive regions (52) by means of patterned irradiation with UV light. Both regions (51) and (52) of the active layer (5) show a clear difference in electroluminescence, electrical resistance and solubility. By means of the above-described effects, displays can be manufactured without making use of structured electrode layers (3) and (11).

Abstract: A vacuum cleaner has a housing (1) in which a dust chamber (17) and a motor chamber (13) are accommodated. The motor chamber (13) is connected to the dust chamber (17) via a motor inlet (15). The housing (1) includes a lower housing part (37) and an upper housing part (39). The dust chamber (17) is present at a side (43) of the upper housing part (39) which faces away from the lower housing part (37), and is bounded by a depression (41) in the upper housing part (39) which faces the lower housing part (37). The motor chamber (13) includes a chamber (45) of the upper housing part (39) which is present at a side (49) of the upper housing part (39) which faces the lower housing part (37). The depression (41) defines an unmolding direction (X) of the upper housing part (39).

Abstract: A shaving system with two main components: an electric shaver and a remote device which has a display unit for presenting specific data to the user. The remote device may further comprise a mirror. The mirror and the display unit may be combined to form a single unit. The display unit may be incorporated in the mirror, which for this purpose may be implemented as a partly transparent mirror with the display unit mounted on the backside of the mirror. Additionally, the remote device may perform the function of charging stand for a rechargeable battery of the shaver. In that case the remote device has a docking bay for receiving the shaver. The shaver's battery is charged via electrical contacts between the remote device and the electric shaver, or by means of coils in the remote device and the shaver. The display unit displays status information of the shaver and provides feedback to the user during shaving.

Abstract: A capacitor comprising a ceramic dielectric material and at least two electrodes, said dielectric material essentially consisting of a dielectric composition with a doped barium-calcium-zirconium-titanate, said doped barium-calcium-zirconium-titanate having the compositionBa.sub.0.96 Ca.sub.0.04).sub.a ?Ti.sub.0.82-y Zr.sub.0.18 Mn.sub.y !O.sub.3 ,wherein 0.001.ltoreq.y.ltoreq.0.01, 1.00<a.ltoreq.1.02 and being doped with tungsten in a quantity r of 0.001 to 0.005 mol/formula unit and with at least one element A of the group formed by aluminium, gallium, yttrium, zinc, nickel and ytterbium in a quantity s of 0.001 to 0.005 mol/formula unit.

Abstract: The invention relates to a display screen comprising a phosphor composition of a sulphide and/or selenide-containing phosphor which is provided with a coating which comprises molybdenum (VI)-trioxide. In such display screens, the advantages of the efficient sulphide or selenide-containing phosphors can be used and said display screens remain bright and rich in contrast for a long period of time because the coating, which comprises molybdenum (VI)-trioxide, surprisingly acts as a stabilizing protective coating which limits the corrosion processes in sulphide and/or selenide-containing phosphors induced by low-energy radiation.

Abstract: A method of manufacturing a plurality of electronic multilayer component search of which alternately stacked electrically conductive and insulating layers alternately connected to opposite edges of the component, which method comprises: providing a substrate having a face endowed with a regular pattern of substantially parallel elongated protrusions separated by valleys; providing a first and a second flux of electrically conductive material in a direction subtending an angle of less than 90 with the substrate face and extending substantially parallel to the surface protrusions, and covering the thus-formed electrically conductive layers with intervening electrically insulating layers, the first and second fluxes having substantially oppositely directed in-plane components; providing said first and second fluxes with intervening insulating layers in an alternate manner as often as desired; dividing the substrate into strips, each including a protrusion, by severing the substrate along a series of planes, each

Abstract: By providing an interconnection structure (1) with strip-shaped elevations (11) which, in a plan view, are preferably asterisk-shaped, the contact face is cleaned during compression and an adhesive can easily flow away. The interconnection structure is very suitable for face-down bonding of drive ICs in a display device.

Abstract: The invention describes a transformer core of NiZn ferrite material. Said transformer core exhibits low overall losses when it is used in a transformer. Said low losses are attained if the majority of the grains of the sintered ferrite material have a monodomain structure. This is the case if the average grain size is smaller than 2.8 microns. The average grain size of the sintered material preferably ranges of from 1.3 to 2.6 microns. The .delta.-value is preferably less than 4 nm.

Abstract: An optical element (8) is provided on a substrate, for example a display screen (3) of a display device (1), which optical element comprises a light-transmitting layer whose transmission in the visible region varies in response to a change in ambient light. The optical element (8) is characterized in that it further comprises a colored coating which selectively absorbs light in the visible region. The colored coating has such an absorption characteristic that the color coordinates (x;y) of the combination of the light-transmitting layer and the colored coating vary in such a way, as a result of a variation in ambient light, that a line, which interconnects the color coordinates, is partly situated in an elliptical area with achromatic point (0.333;0.333) in the color triangle, which ellipse comprises a major axis and a minor axis, which major axis terminates in (0.30;0.28) and (0.36;0.38) and the eccentricity of which ranges between 2 and 3.

Abstract: The invention relates to a hybrid RC element and to a simple method of manufacturing such an element. The inventive hybrid RC element comprises a capacitor body and a resistor body. Said element is characterized in that it includes a block-shaped, ceramic capacitor body which is provided with a contact layer on two parallel surfaces, and in that a block-shaped, ceramic resistor body is provided on one of said contact layers, the surface of the resistor body facing away from the capacitor body also being provided with a contact layer. The resistor body is preferably made from doped Si. The inventive hybrid RC element is very suitable for applications in which the element is exposed to high voltage pulses (1 kV or more). Unlike the known hybrid RC elements, the element in accordance with the invention is not subject to short-circuits under these conditions.

Abstract: The invention relates to a stable aqueous dispersion of particles which can be flocculated by increasing the temperature to a value above the transition temperature. The invention is characterized in that the dispersion comprises a polymer selected from the group consisting of polyvinyl methyl ether and a block copolymer of polyvinyl methyl ether and a polyvinyl ether, the ether group bonded to the main chain via the oxygen atom being adsorbed onto the surface of the particles. The invention also relates to a block polymer of the above-mentioned type and to a method of manufacturing such a block copolymer. The invention enables very fine powders of ceramic particles having a very high homogeneity to be obtained.

Abstract: The electrochromic element comprises an electrochromic layer (22) whose transmission properties change when a voltage difference is applied across the element. Said electrochromic layer (22) comprises a first metal oxide of the group formed by WO.sub.3, MoO.sub.3, Nb.sub.2 O.sub.5, MnO.sub.2 and ZrO.sub.2 (and combinations thereof) and a second metal oxide containing V.sub.2 O.sub.5, TiO.sub.2 and/or ZnO. If the concentration of the second metal in the mixture ranges from 1 to 15 at. %, preferably from 3 to 10 at. %, the electrochromic layer (22) is transparent and colorless if no guest atoms are incorporated in the layer, and it is (color neutral) grey if a substantial concentration of guest atoms is incorporated in the layer.Electrochromic elements are provided, for example, on the outer surface of a display screen of a display device.

Abstract: A semiconductor device comprises a chip soldered to a support. The chip comprises a semiconductor substrate, a via a ground plane on a rear surface, and an anti-adhesion layer deposited continuously inside the via. A solder layer which does not wet the anti-adhesion layer but which does wet the ground plane has a globular shape in the via opening and makes no mechanical contact with the walls of the via. The manufacturing process comprises the sandwiching of a soldering preform between the support and the rear surface provided with the ground plane and said anti-adhesion layer, and melting of the preform under pressure so that the solder rises in globular shape inside the via. The anti-adhesion layer is realized without mask.

Abstract: Deflection ring of sintered MgZn-ferrite material, cathode ray tube comprising such a ring and moulding made from this material.The invention relates to a deflection ring of sintered MgZn-ferrite material. In accordance with the invention, this deflection ring is characterized in that the majority of the grains of the sintered material have a monodomain structure. By virtue thereof, a relatively small heat dissipation occurs in the ring when it is used in a cathode ray tube. The average grain size of the sintered MgZn-ferrite material is preferably 2.8 micrometers or less. MgZn-ferrite materials whose composition corresponds to the formula Mg.sub.1-z Zn.sub.z Fe.sub.2-y O.sub.4, wherein 0.1<z<0.4 and 0.01<y<0.3, have the additional advantage that they have a relatively high saturation magnetization and a relatively high electrical resistance.

Abstract: A cathode ray tube (CRT) has a getter attachment wand with a trough-shape along a substantial portion of its length, imparting an increased stiffness to the wand to maintain the wand in close proximity to the inside surface of the CRT envelope, thereby avoiding clipping of the electron beam on its way to the screen. An optimal curvature of the wand strikes a balance between the desired stiffness and the ease with which the wand can be resistance welded to the top cup of the electron gun assembly.