Abstract:
A light generating unit that includes a lamp body and an external electrode. The lamp body includes a discharge space to generate a light. The external electrode includes a metal layer and a protection layer that covers the metal layer. The external electrode is positioned on the lamp body to apply a discharge voltage to the lamp body.
Abstract:
A gas injection port structure of a flat fluorescent lamp (FFL) used as a backlight unit (BLU) in display devices, such as LCDs, is disclosed. The FFL has a flat lower plate, an upper plate having a protruding channel and being integrated with the lower plate into a single body, and a gas injection port provided on the FFL. The gas injection port is formed on the upper plate of the FFL at a predetermined position while lying on the upper plate so that the gas injection port is level with or lower than a height of the protruding channel of the upper plate. The gas injection port may contain therein both a mercury getter and a sealing material having a passage formed through the sealing material. The gas injection port minimizes the thickness of the FFL, and accomplishes the recent trend of thinness of display devices having the FFLs.
Abstract:
A system for producing upper plates of flat fluorescent lamps (FFL upper plates) is disclosed. In the system, various units used for producing the FFL upper plates are placed on or around multi-storied conveyors of a conveying unit, so that the area and space required to situate the various units is minimized. The system also allows an FFL upper plate producing process, including glass panel feeding, glass panel heating, glass panel shaping to provide an FFL upper plate, FFL upper plate heat-treatment, and FFL upper plate discharge, to be executed quickly and continuously in real time, thus maximizing work efficiency and productivity when producing the FFL upper plates. The system includes a conveying unit having a plurality of conveyors placed to form a multi-storied conveyor structure, first and second transfer units placed at opposite ends of the conveying unit, a glass panel feed unit to feed glass panels onto the conveying unit, a heating unit to further heat the glass panels on the conveying unit, a shaping unit to shape the heated glass panels, thus providing FFL upper plates, a heat treatment unit to slowly cool the FFL upper plates, and a product discharge unit to discharge the FFL upper plates from the conveying unit to the outside of the system.
Abstract:
The present invention relates to a fluorescent tube structure, which fluoresces when connecting electric power, including a base plate and an upper cover forming a enclosed discharge chamber, wherein pellicles applied inside to enable an illuminant to project to the curved surface of the upper cover and then be reflected to the base plate, which enhances illumination and also reduces illumination loss to the lateral, thereby improving illuminant efficiency. The present invention can be used as a backlight on illuminating and electronic display devices.
Abstract:
A light tube for a cold cathode fluorescent lamp includes a light tube body, anode and cathode disposed in the light tube body and an activated gas absorber. The light tube body contains inert gas, mercury substance and a layer of phosphor coating on its inner surface. The cathode is adapted for electrically connecting to the negative terminal for emitting electrons to excite the mercury substance for conducting the electrons to the anode as an electric circuit, wherein the excited mercury substance emits ultra violet rays causing the phosphor coating to generate visible light. The activated gas absorber is gas absorber made of zirconium-aluminum alloy which can be activated at an activation temperature substantially lower than 900 degrees Celsius, preferably 390 degrees Celsius, to provide stronger oxygenic gas absorption ability while reducing the manufacturing steps and cost.
Abstract:
A flat lamp for emitting light to a surface area of a liquid crystal display device includes a bottom having a channel uniformly crossing an entire surface of the bottom, an arc-discharging gas is disposed within the channel, a cover disposed upon an upper junction surface of the bottom, the cover is coated with a fluorescent material, and an electric field generating means for generating an electric field, wherein the electric field generating means is placed along opposing lateral sides of the channel.
Abstract:
A bent fluorescent lamp for backlighting a display providing uniform illumination. A fluorescent lamp is made from a tubular glass envelope having right angles. The right angles provide improved illumination of a plane surface for backlighting a liquid crystal display. The right angles eliminate dark regions in the illuminated surface. An electrode is positioned sufficiently far from a central portion of the lamp so that any dark spaces in the gas discharge of the fluorescent lamp, such as the Faraday dark space associated with a cathode of a lamp are not formed within the central portion. The central portion of the fluorescent lamp has a uniform brightness or intensity for backlighting a liquid crystal display. A method of forming a right-angled bend in a glass tube is also disclosed.
Abstract:
A flat panel fluorescent lamp includes first and second glass substrates coupled with each other, at least one discharge path formed in the second glass substrate, and at least one pair of electrodes formed at the discharge path.
Abstract:
A bent fluorescent lamp for backlighting a display providing uniform illumination. A fluorescent lamp is made from a tubular glass envelope having right angles formed therein. The right angles provide improved illumination of a plane surface for backlighting a liquid crystal display. The right angles eliminate dark regions in the illuminated surface. A right-angled bend is also formed at the ends of the fluorescent lamp. An electrode is positioned sufficiently far from a central portion of the lamp so that any dark spaces in the gas discharge of the fluorescent lamp, such as the Faraday dark space associated with a cathode of a lamp are not formed within the central portion. As a result, the central portion of the fluorescent lamp has a uniform brightness or intensity providing improved illumination for backlighting a liquid crystal display. The resulting more uniform illumination with less dark regions results in a more legible display and more accurate information being displayed. A method of forming a right-angled bend in a glass tube is also disclosed.
Abstract:
This invention relates to a fluorescent lamp with a discharge vessel enclosing a discharge path and containing a gas fill. The gas fill may be by excited by a discharge arc. The discharge vessel has at least two sections located adjacent to each other. There are bypass means for providing a bypass path for the gas discharge during a startup of the lamp between the two adjacent sections of the discharge vessel. The bypass path results in a short-cut across the impedance of a portion of the discharge path. A method for starting a discharge arc of the fluorescent lamp is also disclosed. In the method, a voltage is applied between two electrodes across the discharge path, and a bypass path is provided between two ends of a bypassed part of the discharge path. The discharge path is divided into a bypassed part and a remaining part. The combined impedance of the bypass path and the associated bypassed part is selected to be lower than the impedance of the associated bypassed part, and thereby a relatively increased voltage is provided across the remaining part. The gas fill is excited in the remaining part of the discharge path with the help of the increased voltage. Thereafter the impedance of the remaining part is lowered and the voltage across the bypassed part is increased. Finally, the gas fill is excited in the bypassed part by the relatively increased voltage across the bypassed part.