Abstract:
A vacuum field emitter device is manufactured by assembling elements of the device, including at least one getter, under a vacuum or a controlled atmosphere. The assembly step includes a step in which elements are positioned, an oven drying step and a device sealing step. Each getter is hydrogenated after the oven drying. The manufacturing process has applications in the manufacture of television screens.
Abstract:
In a phase-locked loop comprising a phase detector (1), a loop filter (5) and a controlled oscillator (17) which are arranged on a common integrated circuit, interferences coupled into the substrate of the integrated circuit by other parts of the circuit are suppressed. In a first embodiment of the invention, this object is achieved in that the controlled oscillator (17) is preceded by a capacitive voltage divider (9) which comprises at least two capacitances (10, 12), the controlled oscillator (17) is controlled in dependence upon the output signal of the capacitive voltage divider (9), and the capacitive voltage divider (9), together with the phase detector (1), the loop filter (5) and the controlled oscillator (17) is arranged on an integrated circuit. In accordance with a second embodiment of the invention, the reduction of interference is achieved in that the controlled oscillator (17) has a differential structure and comprises at least two voltage-controlled current sources (18, 19) whose circuits are coupled to a power supply potential and to a substrate on which the integrated circuit is arranged, the controlled oscillator (17) has an output stage (20) which is arranged behind the voltage-controlled current sources (18, 19) and generates two differential digital signals in dependence upon the differential signals applied thereto, which differential digital signals are generated with a high edge steepness by means of switching between two potentials and are applied to amplifier stages (56, 57) which are arranged between power supply potential and reference potential and supply two differential output signals operating at reference potential.
Abstract:
According to this process a structure is produced comprising an insulating substrate (32), at least one cathode conductor (34), an insulating layer (36), a grid layer (40) and holes (42) are formed through the grid layer and the insulating layer, on the grid layer using a wet chemical deposition method is produced a lift-off layer (44), followed by the deposition on the assembly of an electron emitting material layer (52) and the elimination of the lift-off layer. Application to the manufacture of flat screens.
Abstract:
Use of a paper carrier for the production of a repulpable carton sealing tape which is finished on one side with a repulpable self-adhesive composition and on the other side with a repulpable silicone-free release based on a copolymer of amide/styrene together with a film-forming agent.
Abstract:
Electrode and specifically a transparent electrode for an electrolytic cell and specifically an electrolytic display cell constituted by a transparent conducting layer having a configuration suitable for display purposes and deposited on an electrically insulating transparent support. The transparent conducting layer is coated with a thin transparent conducting film made from a material different from that of the conducting layer, so that under the operating conditions of the cell it is possible to limit the overvoltage on the electrode to such a value that there can be no secondary reactions liable to bring about a transformation of the materials forming said layer and said film. The layer is made from tin-doped indium oxide and the film from tin oxide doped with antimony or cadmium.
Abstract:
Apparatus for controlling an electrolytic display cell comprising a supplementary reference electrode in the cell, means for measuring the impedance of the cell across this electrode and means for making at least one of these magnitudes dependent on the impedance.
Abstract:
Electrode and specifically a transparent electrode for an electrolytic cell and specifically an electrolytic display cell constituted by a transparent conducting layer having a configuration suitable for display purposes and deposited on an electrically insulating transparent support. The transparent conducting layer is coated with a thin transparent conducting film made from a material different from that of the conducting layer, so that under the operating conditions of the cell it is possible to limit the overvoltage on the electrode to such a value that there can be no secondary reactions liable to bring about a transformation of the materials forming said layer and said film. The layer is made from tin-doped indium oxide and the film from tin oxide doped with antimony or cadmium.
Abstract:
The display device comprises a light source, a uniform layer C.sub.a of semi-reflecting material of small thickness and illuminated by the light source, a uniform layer C.sub.b of transparent material having a refractive index n and a thickness e deposited on the layer C.sub.a, the optical thickness of the layer C.sub.b being constant and equal to ne as measured at right angles to the surface, a reflecting layer C.sub.c deposited on at least part of the layer C.sub.b in order to form the patterns which are intended to be displayed.
Abstract:
This invention relates to the method of manufacturing a toothbrush adapted to be mounted on an automatic toothbrush power handle, and having as a power source vibratory energy in the ultrasonic range. The manufacturing process includes that of providing a plastic brush having a head portion including a plurality of apertures and positioning a bristle cluster respectively in each aperture; and effecting a flow of the plastic in the head portion into substantially surrounding relationship of the bristles in each aperture therein, such that the plastic solidifies in adhesive relationship to the bristles to transmit the ultrasonic vibratory energy from the brush head portion to the bristles.
Abstract:
The turbomachine has a ring of radial blades which are connected to an annular end wall. Situated on the end wall upstream of each blade is a deflector wedge with two divergent guide surfaces. The deflector wedge generates pressure-side and suction-side vortices of which the vortices caused by the blade cascade are altered such that the transverse flow and backflow areas on the blade are reduced, and therefore the edge zone losses are decreased.