Abstract: A conductive suspension for making contact to the inside of a picture tube consists of graphite, glass-frit powder, a binder, such as nitrocellulose, a solvent, such as isoamyl acetate. It can be applied prior to or after the aluminizing process by various techniques, such as brushing, printing, or spraying, and permits the bake-out process and the frit-sealing process to be performed in one step because it is permeable to organic substances. It is easy to remove from defective tube parts by conventional cleansing techniques.

Abstract: A liquid crystal cell is disclosed in which the cell walls facing the liquid crystal material are provided with alignment layers of organic material. This material consists of polymer chains with side chains. The ends of the side chains interact with the liquid crystal molecules. The side chains are shorter than the liquid crystal molecules. By suitable choice of the length of the side chains, the tilt angle can be set. It is also possible to provide alternately different side chains one of which interacts with one end of the liquid crystal molecule, while the neighboring side chain interacts with the other end of the same molecule.

Abstract: In a color-picture tube, the conductive coating on the inside of the cone is a suspension without organic constituents. The conductive coating on the inside of the neck, which is contiguous to the conductive coating on the inside of the cone, consists of the aforementioned suspension with an addition of organic constituents. A sharp and scratch-resistant boundary between the conductive coating in the neck and the uncoated area of the neck is thus obtained.

Abstract: To deposit a solderable metal layer on conductive paths (4) of ITO on substrates of display devices (1) by an electroless method, the conductive paths are activated, prior to the deposition, and the areas not covered by the conductive paths are subsequently inactivated. The activated paths are then metallized with a solderable metal layer so that integrated circuits can be soldered to the metallized conductive paths.

Abstract: An arrangement to produce pictures using light polarized in different directions consists of a picture tube to whose faceplate a polarizer film and a polymer liquid crystal film provided on both sides with transparent conductive layers are joined with a transparent adhesive. By using a polymer liquid crystal film, the arrangement can also be realized on picture tubes having curved faceplates. The polarizer film and the polymer liquid crystal film are joined together preferably by laminating, and the laminate is joined to the faceplate with an adhesive. The polymer liquid crystal film preferably contains a ferroelectric liquid crystal material.

Abstract: The introduction of liquid-crystal material into a liquid-crystal cell is simplified by cooling the liquid-crystal material until it has a paste-like viscosity suitable for printing. After a spacer has been positioned on a first substrate, the liquid-crystal material is introduced within the interior portion of the spacer using printing techniques. A second substrate is then placed on the spacer, and the display is sealed.

Abstract: In a color-picture tube, the conductive coating on the inside of the cone is a suspension without organic constituents. The conductive coating on the inside of the neck, which is contiguous to the conductive coating on the inside of the cone, consists of the aforementioned suspension with an addition of organic constituents. A sharp and scratch-resistant boundary between the conductive coating in the neck and the uncoated area of the neck is thus obtained.

Abstract: To metallize transparent conductive paths of indium tin oxide (ITO) on substrates of display devices, a solderable metal layer is applied by electroless deposition. If the metal layer is adjacent a liquid crystal display device, the display device may be manufactured and tested prior to the electroless deposition, with only an edge of the substrate being dipped into the deposition bath. Prior to the deposition of the solderable metal layer, the indium tin oxide surface may be reduced and an adhesion improving layer of may also be deposited by above the indium tin surface and below the solderable metal layer. Integrated circuits can then be soldered to the metallized conductive paths.

Abstract: To simplify the liquid-crystal display film fabrication process, a single film strip is used which is divided into two films prior to the positioning of spacing means. After the spacing means have been positioned on the second film, the first film is folded through 90.degree. and laid on the second film.

Abstract: In the manufacture of display structures--including fluorescent material displays--by means of a print process, a base material (glass or plastic material), prior to the print process, is coated with an electrically conductive layer. During the print process, a strippable coating or pigmented lacquer having the shape of the structure, is deposited onto a first layer. After the print process, the non-printed electrically conductive layer is etched away and in the case of the non-fluorescent display structure, the strippable coating is peeled off the electrically conductive layer. The invention provides an improvement in the manufacture of display structures over the hitherto conventional photographic reproduction of silk-screen printing methods, and provides display structures having sharp edges to a thickness of approximately 10 .mu.m.

Abstract: Method of preparing a phosphor suspension by mixing a photosensitive material, a photosensitizer, and a phosphor for the purpose of forming a photosensitive film. The photosensitizer in the suspension is a chromic-acid solution.With such a phosphor suspension, a firmly adhering, uniform and compact phosphor film can be formed on the screen substrate. In addition, the phosphor areas obtained by this method have very sharp boundaries.

Abstract: After being deposited on the luminescent screen, the dispersion lacquer made by the method disclosed forms a smooth and uniform film whose fluidity can be influenced. This results in an improved reflectance behavior of the deposited aluminum film and, thus, in greater picture brightness.The disclosed method consists in that a boric-acid solution is added to the dispersion lacquer which is then set to the desired viscosity by means of a neutralizer.

Abstract: A rear plate of a liquid-cell display device has louvers embedded therein that allow light to pass from the rear of the display device toward the front only at angles that will cause most or all of the light to be internally reflected at the front plate unless the light has been scattered by the light-scattering fluid of the device.

Abstract: A method and an arrangement for separating a red rare-earth phosphor of a color-television picture tube from the sediment in the drain channels of a screen-coating room, which sediment contains, in addition to various impurities, zinc-sulfide-base and zinc-cadmium-base green and blue phosphors.

Abstract: A method and an arrangement for separating a red rare-earth phosphor of a color-television picture tube from the sediment in the drain channels of a screen-coating room, which sediment contains, in addition to various impurities, zinc-sulfide-base and zinc-cadmium-base green and blue phosphors.