Abstract:
An optical alignment composition including self-photosensitive polyimide having a benzophenone moiety and an active hydrogen moiety, and an LCD having the alignment layer formed of the optical alignment composition are provided. Since the alignment layer with excellent thermal stability and improved pretilt angle is obtained, the LCD having excellent performance can be manufactured.
Abstract:
The present invention discloses a cathode for an electron gun comprising a base metal mainly composed of nickel and containing one kind of reducing element at least, a metal layer mainly composed of tungsten, tungsten-nickel, or zirconium-tungsten 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 tungsten, tungsten-nickel, or zirconium-tungsten on the base metal and heating it 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, used for good generation of free radical barium atom.
Abstract:
A liquid crystal display device is provided with an equipotential electrode structure. The device has a first substrate, a second substrate which is parallel to the first substrate, a number of sets of common electrodes formed on the first substrate and for receiving a voltage from a common electrode driving circuit, and a number of sets of segment electrodes formed on the second substrate and receiving a voltage from a segment electrode driving circuit. The resistance of leading parts of the segment electrodes or the common electrodes are gradually changed.
Abstract:
A plasma display device comprising: a rear substrate; a plurality of first electrodes formed on the rear substrate in a predetermined pattern; a dielectric layer formed on the rear substrate where the first electrodes are to be embedded; a plurality of second electrodes formed on the dielectric layer to be orthogonal with respect to the first electrodes; and at least one auxiliary electrode formed between the second electrodes.
Abstract:
A getter flashing method for a cathode ray tube includes the steps of loading a receptacle of the getter with an active metal, positioning the getter in a funnel such that the active metal is diffused toward an inner surface of the funnel in the vicinity of the getter, and heating and vaporizing the active metal. The getter has a receptacle for receiving the active metal and a support for supporting the receptacle. The receptacle and the support are connected to each other such that an opening portion of the receptacle is directed toward the neighboring funnel portion.
Abstract:
A thermal transfer film is provided. The thermal transfer film having a support layer, light absorbing layer and a transfer layer further includes an insulating layer between the support layer and the light absorbing layer. The reverse transmission of heat is minimized, thereby improving the thermal energy transmission efficiency from the light absorbing layer to the transfer layer and performing a transfer process efficiently. Therefore, the quality of an image is enhanced.
Abstract:
An electron gun for a color cathode ray tube includes cathode, control and screen electrodes, forming a triode. The electron gun includes first, second and third focus electrodes, forming main and auxiliary lenses. A final accelerating electrode faces the third focus electrode. A static voltage is applied to the screen electrode and the second focus electrode. A dynamic focus voltage is applied to the first and third focus electrodes. First and second quadrupole lenses are formed.
Abstract:
There is provided a cap assembly for a rectangular battery comprising a cap cover in which a vent hole is formed, a positive electrode terminal which has a through hole leading to the discharge hole and combines with the upper portion of the cap cover having an insulating plate interposed therebetween, a positive electrode tab connected to a positive electrode of an electrode assembly, a conductive safety vent support having a hollow rivet protrusion passing through the vent hole of the cap cover and the through hole of the positive electrode terminal to be coupled to the positive electrode terminal, and a conical conductive safety vent whose upper circumferential portion combines with the bottom surface of the safety vent support to seal the hollow of the rivet protrusion, and whose vertex contacts the upper surface of the positive electrode tab, wherein the vertex of the safety vent separates from the positive electrode tab when the internal pressure of the battery increases to a predetermined level.
Abstract:
A separator for a battery includes a first separating layer for preventing a short circuit between a positive electrode and a negative electrode and a second separating layer having higher electrolyte retaining power than the first separating layer. The second separating layer is attached on the first separating layer. The second separating layer is made of polyethylene terephtalate, and the first separating layer is selected from the group consisting of nylon and polypropylene. Preferably, the first separating layer is attached on the second separating layer through a thermal fusing process.
Abstract:
A process for the production of mask frames for cathode ray tubes and is particularly useful in the production of color picture tubes for TV sets and monitors. The production of the frames is performed by welding at least two starting components, followed by forming, wherein planar starting components are positioned and fixed in positions in such way that edges of the starting components to be welded are in contact, followed by welding the starting components with at least one laser beam and, subsequently, processing the frame by pressing and/or punching. Preferably the laser beam is generated using a CO.sub.2 gas laser or a Nd:YAG solid-state laser. Preferably, the power of the laser beam is modulated to produce a weld that increases in depth from the beginning of the weld and decreases in depth at the end of the weld.