Abstract: A reflective plate used in a reflective LCD includes a base substrate, a plurality of spacer cores dispersed on the base substrate, an adhesive disposed on the base substrate to attach the spacer cores on the base substrate, and a reflective layer deposited on the base substrate to cover the spacer cores and the adhesive. The base substrate is first prepared, then a plurality of spacers are dispersed on the base substrate, each of the spacers including a spacer core and an adhesive deposited around the spacer core. Next, the adhesive deposited around the spacer cores is molten and the molten adhesive is hardened so that the spacer cores are attached on the base substrate. Finally, a reflective layer is deposited on the substrate to cover the spacer cores.

Abstract: Cinnamate-containing photopolymers for use in liquid crystal display are provided. The photopolymers can be homopolymers or copolymers, and have improved thermostability and photoelectric characteristics. The photopolymers contain a substituted benzene ring and have a weight average molecular weight of from about 1000 to about 100,000. Methods for forming LCD cells using the cinnamate-containing homopolymers and copolymers are also provided.

Abstract: A process and a device for the joining of fastening elements on a mask frame of picture tubes by welding using laser beams is applicable to the production of color picture tubes for television sets and computer monitors. After positioning the fastening elements, the elements are welded by laser beams from at least one laser source. The laser source is located outside the mask frame, and the laser beam is guided through a glass wall of a screen to weld the fastening elements.

Abstract: The present invention provides a cap assembly for a secondary battery having a can and a roll electrode assembly received in the can. The cap assembly comprises a negative plate for mounting on an upper end of the can, a positive plate disposed on the negative plate, an insulating member disposed between the negative and positive plates, a current control member disposed on the positive plate, and a rivet penetrating central portions of the negative and positive plates, the rivet being insulated from the negative plate by a gasket and connected to the roll electrode assembly through a tab. The current control member reduces conductivity between the rivet and the positive plate, thereby cutting off the flow of the current.

Abstract: A composition for a photo-conductive layer and an electron transferring complex system on a color CRT panel having 1-(p-diethylaminophenyl)-1,4,4-triphenyl-1,3-butadiene as an electron donor and a thioxanthene derivative as an electron acceptor in an organic binder dispersion system have not only a high electron transferring capability but also a high electron generating capability so that it is not necessary to add a separate electron generating material.

Abstract: A pixel for a display device has a shape outlined by a black matrix or a barrier. The pixel is shaped with a polygon having 2(n+1) angled portions where n is a natural number of 2 or more. Such a pixel may be also processed without a previously formed black matrix.

Abstract: An electron gun for a cathode ray tube includes a triode portion composed of a cathode, a first grid electrode and a second grid electrode. Each of the first and second grid electrodes has beam-guide holes. The beam-guide hole of the first grid electrode is larger than the beam-guide hole of the second grid electrode. The hole portion of the first grid electrode is thinner than the hole portion of the second grid electrode. The distance between the first grid electrode and the second grid electrode is two or three times greater than as the distance between the cathode and the first grid electrode.

Abstract: A faceplate panel for a cathode ray tube includes an exterior surface having a substantially flat shape, and an interior surface having a concave shape. The interior surface curves in a direction toward the flat exterior surface with a curvature radius R.sub.p satisfying the following condition:1.2R.ltoreq.R.sub.p .ltoreq.8R,where R=1.767.times.the diagonal length of the effective screen of the panel. Furthermore, a peripheral thickness t of the faceplate panel at the diagonal end of the effective screen satisfies the following condition:B.ltoreq.t.ltoreq.A,where B is the peripheral thickness of the panel at the diagonal end of the effective screen when a curvature radius R.sub.p of the interior surface is 8R, and A is the peripheral thickness of the panel on the diagonal end of the effective screen when a ratio of the light transmission at the peripheral portion of the diagonal end of the effective screen to the light transmission at the central portion of the effective screen is 0.85.

Abstract: A PDMA polymer for a photosensitive resin composition. The PDMA polymer is obtained by polymerizing an acrylamide, N,N-dimetylacrylamide monomer, and a vinyl-type silane. The PDMA polymer having a molecular weight of 1,000,000.about.

Abstract: This invention relates to an apparatus for compensating convergence in a color cathode ray tube, more particularly to an apparatus for minimizing the convergence drift variance of R and B electron beams on a screen so as to improve convergence characteristics and a picture quality on the screen. The apparatus for compensating convergence drift comprising: a convergence purity magnet for converging the electron beams emitted from the electron gun on the specific point of the screen of the color cathode ray tube; and a supplementary magnet ring 52 with at least four-magnetic pole contacting the neck N between a second grid electrode 24 and the deflection yoke 60. Particularly, the supplementary magnet ring is mounted on a holder 48 of the convergence purity magnet 40 and has a pole arrangement to move the convergence of the R and B beams in the direction opposite to the electron gun from the screen.

Abstract: The invention relates to a black matrix in color picture tubes, a positive photoresist composition, an agent for protecting a black matrix, and a process for producing said black matrix. The invention is based on the object of providing a black matrix produced using a positive photoresist composition which permits good capability of structuring between exposed and non-exposed areas, and reducing the process for producing the black matrix to a few technological steps.

Abstract: Disclosed is low-voltage phosphor material having a high level of brightness and a manufacturing method thereof. The phosphor material includes (ZnCd)S or ZnS based compound phosphor material, and a metal added to the phosphor material, the metal having properties for preventing oxidation and reducing surface charge of the phosphor material. The method of manufacturing the phosphor material includes the steps of adding (ZnCd)S based compound phosphor material or ZnS based compound phosphor material to a vehicle and mixing the resulting mixture, and adding a metal to the mixture, the metal having properties for preventing oxidation and reducing surface charge of the phosphor material. Preferably, the metal is Zn having a diameter of 0.1 to 10 .mu.m and a purity of 95%. Also preferably, the metal is 0.01 to 10.0 wt % based on the wt % of the phosphor material.

Abstract: An electron emitter composition comprising electron emitting materials, dispersion agent, binder, and pure water is provided.An electron emitter of an FED is produced by the steps of forming a photoresist layer by coating and drying a photoresist composition on an electrode formed on a back plate (cathode plate); exposing and developing the photoresist layer into a predetermined pattern using a mask; forming an electron emitting layer by coating and drying an electron emitter composition consisting of electron emitting materials, a binder, a dispersion agent, and pure water on the developed photoresist layer; exposing the photoresist layer by etching the electron emitting layer; and washing and drying it after stripping the exposed photoresist layer.

Abstract: In a cathode ray tube, a shadow mask has a hole portion where a plurality of electron beam passing holes are formed and a skirt portion extending from the edge of the hole portion. A frame has a support portion to which the skirt portion of the shadow mask is fixed for supporting the shadow mask and a flange portion extending from the support portion. The support portion and the flange portion have a plurality of holes formed therein. An inner shield is supported by the frame.

Abstract: A method of preparing an electrode for a lithium based secondary cell including the steps of mixing an active material, a conductive agent, a binder and a plasticizer selected from soybean oil or dibutyl phthalate and applying the active material composition to a current collector is provided.

Abstract: A shadow mask for a color picture tube a thermal includes insulating layer preventing heat transfer to an apertured shadow mask. The side of the mask directed toward the cathode of the color picture tube is coated with a heat-insulating layer including particles having a porous structure. The pores may contain heavy metals or heavy metal compounds so that electron reflection and absorption occurs directly within the layer. The resulting heat is transferred to the interior of the picture tube instead of to the mask.

Abstract: A color filter solution for applying on a face glass of a cathode ray tube and a method for patterning a color filter to improve the brightness and contrast characteristics of the color filter. The color filter solution comprises a pigment, an anion surfactant which contains sodium or ammonium ion or citric acid as a dispersion agent, a mixture solvent of a glycol and a pyrrolidone containing methyl or ethyl, a nonionic surfactant and a pure water. A method for patterning a color filter in a cathode ray tube comprises the steps of:preparing a color filter solution which comprises a pigment, an anion surfactant which contains sodium or ammonium ion or citric acid as a dispersion agent, a mixture solvent of a glycol and a pyrrolidone containing methyl or ethyl, and a nonionic surfactant;forming a photoresist slurry by adding an alcohol-sodium or ammonium dichromate to the color filter solution ; andcoating, exposing and developing the photoresist slurry on a face glass.

Abstract: A method of manufacturing a cathode ray tube comprising the steps of providing a stem with a flange having an outer diameter larger than an inner diameter of a bottom end of a neck and smaller than or identical with an outer diameter of the bottom end of the neck, applying a liquefied frit glass onto an upper portion of the flange, hardening the liquefied frit glass applied on the upper portion of the flange, mounting an electron gun onto the stem, fitting the stem into the inside of the neck such that the upper portion of the flange applied with the frit glass contacts a bottom end of the neck, and providing a frit seal between the upper portion of the flange and the bottom end of the neck by heat-treating the frit glass between them.

Abstract: The present invention includes a cathode for an electron gun having a base metal mainly composed of nickel and containing one kind of reducing element at least, a metal layer mainly composed of nickel or nickel-zirconium on the upper side of the base metal, and an electron emitting material layer containing alkaline earth metal oxide including barium at least on the upper side of the metal layer. The metal layer is formed by spreading nickel or nickel-zirconium on the base metal and heating it or by adhering nickel or nickel-zirconium powder thereon to have particle smaller than that of the base metal, to increase its life cycle under a high current density load by ensuring a diffusion route of reducing element steadily for good generation of free radical barium atom.

Abstract: A method of making amorphous light rare-earth transition metal (LRE-TM)-metalloid alloys having perpendicular magneto anisotropy energy, is provided. In this method of making amorphous LRE-TM-metalloid alloys by depositing a metalloid on an LRE-TM by sputtering, the sign of a saturation magnetostriction constant of the alloy is made opposite to the sign of a stress by applying a different Ar sputtering pressure according to the sign of the saturation magnetostriction constant, in order to increase the effective perpendicular magneto anisotropy energy K.sub.Ueff containing the components of magneto elastic energy expressed by an expression ##EQU1## (here, .lambda..sub.s is the saturation magnetostriction constant, and .sigma. is the stress).